Re: [Veritas-bu] SSO Option for LTO3 drives
To use the drives for regular backups, you have to present the drives to
the NetApp and the Media Server(s). The SSO Option also has to be
installed for this drive sharing to be enabled.
Rusty Major, MCSE, BCFP, VCS ▪ Sr. Storage Engineer ▪ SunGard
Availability Services ▪ 757 N. Eldridge Suite 200, Houston TX 77079 ▪
281-584-4693
Keeping People and Information Connected® ▪
http://availability.sungard.com/
P Think before you print
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"David Turner"
Sent by: veritas-bu-boun...@mailman.eng.auburn.edu
07/02/2009 10:09 AM
To
cc
Subject
Re: [Veritas-bu] SSO Option for LTO3 drives
If I dedicate 2 drives to the Netapp and have the zoning setup properly
will the media servers use those drives for regular backups as well?
-Original Message-
From: veritas-bu-boun...@mailman.eng.auburn.edu
[mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of tburrell
Sent: Wednesday, July 01, 2009 4:18 PM
To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU
Subject: [Veritas-bu] SSO Option for LTO3 drives
Steve,
OK- I forgot about one of the key elements: the NDMP backups do actually
run through the media servers via Remote NDMP. They are still using
NDMP, but our solaris/windows media servers handle the tape drives for
them.
Sorry for the misinformation- the devil is in the details.
javascript:emoticon('[Embarassed]')
Tom
Hudson, Steve wrote:
> Tom do you mean you share 6 LTO drives between regular backups and
NDMP
> backups ?? How do you do this?? The manual is not clear and we
currently
> dedicate drives to NDMP only. We would like not to do this.. Any
> information would be appreciated. Thanks.We do have SSO
licensed
>
>
>
> Steve Hudson
> Enterprise Storage
> Iron Mountain
> 745 Atlantic Ave
> Boston, MA 02111
> Phone: (617) 535-2849
>
> steve.hudson < at > ironmountain.com
>
>
> Visit the new www.ironmountain.com
> Tour Iron Mountain
>
> -Original Message-
> From: veritas-bu-bounces < at > mailman.eng.auburn.edu
> [mailto:veritas-bu-bounces < at > mailman.eng.auburn.edu] On Behalf Of
tburrell
> Sent: Wednesday, July 01, 2009 2:12 PM
> To: VERITAS-BU < at > MAILMAN.ENG.AUBURN.EDU
> Subject: [Veritas-bu] SSO Option for LTO3 drives
>
>
> I'll chime in here for SSO too- if you have it, then zoning drives to
> only one host is pointless and silly.
>
> We are using 3 media servers and 2 NetApp appliances attached to 6
LTO3
> drives (soon to be 8 ) on a StorageTek l700 with SSO. All media
servers
> can use all tape drives as can the NetApps over NDMP. Running 6.5.3.1
> (Netapps are at DOT 7.3.1) and it works very well. We have some
> occasional quirks with SSO when drives have issues, but it's more than
> offset by the efficiencies we gain.
>
>
> If you already own SSO- use it. It has some quirks as others
describe,
> but you'll probably find you get much better utilization out of your
> drives.
>
> Tom Burrell
>
>
> David Turner wrote:
>
> > I have 1 windows master running Netbackup 6.5 with 3 media servers.
I
> >
> have Storagetek/Sun SL8500 with 8 LTO3 tape drives (2 drives are
> dedicated via NDMP to a Netapp 3050). All drives are connected via FC
to
> brocade etc. we have the Shared storage option but I don't think it's
> working properly. How can I verify that its working?
>
> >
> > I believe the engineers that configured the zoning on the switch
> >
> dedicated 2 drives per server and dedicate 2 to the Netapp. Did it
makes
> sense to purchase SSO?
>
> >
> >
> > I was told you should only have 2 LTO3 drives per servers because of
> >
> "shoe shining" and the servers ability to handle more than 2 drives
> (Dell 2950's quad cores with 8gig of ram). I am wondering if the
switch
> should be rezoned to make use of SSO or can the zoning have an impact
on
> how SSO should be configured? How can these 2 play together?
>
> >
> > As you can see I am all confused and would love for someone to
explain
> >
> this in simple terms.
>
> >
> > thanks
> >
>
>
>
+--
> |This was sent by tburrell_mn < at > yahoo.com via Backup Central.
> |Forward SPAM to abuse < at > backupcentral.com.
>
+--
>
>
> The information contained in this email message and its at
Re: [Veritas-bu] SSO Option for LTO3 drives
On Thu, Jul 2, 2009 at 10:08 AM, David Turner wrote: > If I dedicate 2 drives to the Netapp > and have the zoning setup properly > will the media servers use those drives for regular backups as well? Then they're not dedicated, are they? .../Ed Ed Wilts, RHCE, BCFP, BCSD, SCSP, SCSE ewi...@ewilts.org ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] SSO Option for LTO3 drives
If I dedicate 2 drives to the Netapp and have the zoning setup properly
will the media servers use those drives for regular backups as well?
-Original Message-
From: veritas-bu-boun...@mailman.eng.auburn.edu
[mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of tburrell
Sent: Wednesday, July 01, 2009 4:18 PM
To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU
Subject: [Veritas-bu] SSO Option for LTO3 drives
Steve,
OK- I forgot about one of the key elements: the NDMP backups do actually
run through the media servers via Remote NDMP. They are still using
NDMP, but our solaris/windows media servers handle the tape drives for
them.
Sorry for the misinformation- the devil is in the details.
javascript:emoticon('[Embarassed]')
Tom
Hudson, Steve wrote:
> Tom do you mean you share 6 LTO drives between regular backups and
NDMP
> backups ?? How do you do this?? The manual is not clear and we
currently
> dedicate drives to NDMP only. We would like not to do this.. Any
> information would be appreciated. Thanks.We do have SSO
licensed
>
>
>
> Steve Hudson
> Enterprise Storage
> Iron Mountain
> 745 Atlantic Ave
> Boston, MA 02111
> Phone: (617) 535-2849
>
> steve.hudson < at > ironmountain.com
>
>
> Visit the new www.ironmountain.com
> Tour Iron Mountain
>
> -Original Message-
> From: veritas-bu-bounces < at > mailman.eng.auburn.edu
> [mailto:veritas-bu-bounces < at > mailman.eng.auburn.edu] On Behalf Of
tburrell
> Sent: Wednesday, July 01, 2009 2:12 PM
> To: VERITAS-BU < at > MAILMAN.ENG.AUBURN.EDU
> Subject: [Veritas-bu] SSO Option for LTO3 drives
>
>
> I'll chime in here for SSO too- if you have it, then zoning drives to
> only one host is pointless and silly.
>
> We are using 3 media servers and 2 NetApp appliances attached to 6
LTO3
> drives (soon to be 8 ) on a StorageTek l700 with SSO. All media
servers
> can use all tape drives as can the NetApps over NDMP. Running 6.5.3.1
> (Netapps are at DOT 7.3.1) and it works very well. We have some
> occasional quirks with SSO when drives have issues, but it's more than
> offset by the efficiencies we gain.
>
>
> If you already own SSO- use it. It has some quirks as others
describe,
> but you'll probably find you get much better utilization out of your
> drives.
>
> Tom Burrell
>
>
> David Turner wrote:
>
> > I have 1 windows master running Netbackup 6.5 with 3 media servers.
I
> >
> have Storagetek/Sun SL8500 with 8 LTO3 tape drives (2 drives are
> dedicated via NDMP to a Netapp 3050). All drives are connected via FC
to
> brocade etc. we have the Shared storage option but I don't think it's
> working properly. How can I verify that its working?
>
> >
> > I believe the engineers that configured the zoning on the switch
> >
> dedicated 2 drives per server and dedicate 2 to the Netapp. Did it
makes
> sense to purchase SSO?
>
> >
> >
> > I was told you should only have 2 LTO3 drives per servers because of
> >
> "shoe shining" and the servers ability to handle more than 2 drives
> (Dell 2950's quad cores with 8gig of ram). I am wondering if the
switch
> should be rezoned to make use of SSO or can the zoning have an impact
on
> how SSO should be configured? How can these 2 play together?
>
> >
> > As you can see I am all confused and would love for someone to
explain
> >
> this in simple terms.
>
> >
> > thanks
> >
>
>
>
+--
> |This was sent by tburrell_mn < at > yahoo.com via Backup Central.
> |Forward SPAM to abuse < at > backupcentral.com.
>
+--
>
>
> The information contained in this email message and its attachments
> is intended
> only for the private and confidential use of the recipient(s) named
> above, unless the sender expressly agrees otherwise. Transmission
> of email over the Internet
> is not a secure communications medium. If you are requesting or
> have requested
> the transmittal of personal data, as defined in applicable privacy
> laws by means
> of email or in an attachment to email you must select a more
> secure alternate means of transmittal that supports your
> obligations to protect such personal data. If the reader of this
> message is not the intended recipient and/or you have received this
> email in error, you must take no action based on the information in
> this email and you are hereby notified that any dissemination,
> misuse, copying, or disclosure of this communication is strictly
> prohibited. If you have received
> this communication in error, please notify us immediately by email
> and delete the original message.
[Embarassed] [Embarassed]
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___
Re: [Veritas-bu] SSO Option for LTO3 drives
So this means the NDMP traffic goes over the IP network correct? This is
not what we want to do.Thanks...
Steve Hudson
Enterprise Storage
Iron Mountain
745 Atlantic Ave
Boston, MA 02111
Phone: (617) 535-2849
steve.hud...@ironmountain.com
Visit the new www.ironmountain.com
Tour Iron Mountain
-Original Message-
From: veritas-bu-boun...@mailman.eng.auburn.edu
[mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of tburrell
Sent: Wednesday, July 01, 2009 4:18 PM
To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU
Subject: [Veritas-bu] SSO Option for LTO3 drives
Steve,
OK- I forgot about one of the key elements: the NDMP backups do actually
run through the media servers via Remote NDMP. They are still using
NDMP, but our solaris/windows media servers handle the tape drives for
them.
Sorry for the misinformation- the devil is in the details.
javascript:emoticon('[Embarassed]')
Tom
Hudson, Steve wrote:
> Tom do you mean you share 6 LTO drives between regular backups and
NDMP
> backups ?? How do you do this?? The manual is not clear and we
currently
> dedicate drives to NDMP only. We would like not to do this.. Any
> information would be appreciated. Thanks.We do have SSO
licensed
>
>
>
> Steve Hudson
> Enterprise Storage
> Iron Mountain
> 745 Atlantic Ave
> Boston, MA 02111
> Phone: (617) 535-2849
>
> steve.hudson < at > ironmountain.com
>
>
> Visit the new www.ironmountain.com
> Tour Iron Mountain
>
> -Original Message-
> From: veritas-bu-bounces < at > mailman.eng.auburn.edu
> [mailto:veritas-bu-bounces < at > mailman.eng.auburn.edu] On Behalf Of
tburrell
> Sent: Wednesday, July 01, 2009 2:12 PM
> To: VERITAS-BU < at > MAILMAN.ENG.AUBURN.EDU
> Subject: [Veritas-bu] SSO Option for LTO3 drives
>
>
> I'll chime in here for SSO too- if you have it, then zoning drives to
> only one host is pointless and silly.
>
> We are using 3 media servers and 2 NetApp appliances attached to 6
LTO3
> drives (soon to be 8 ) on a StorageTek l700 with SSO. All media
servers
> can use all tape drives as can the NetApps over NDMP. Running 6.5.3.1
> (Netapps are at DOT 7.3.1) and it works very well. We have some
> occasional quirks with SSO when drives have issues, but it's more than
> offset by the efficiencies we gain.
>
>
> If you already own SSO- use it. It has some quirks as others
describe,
> but you'll probably find you get much better utilization out of your
> drives.
>
> Tom Burrell
>
>
> David Turner wrote:
>
> > I have 1 windows master running Netbackup 6.5 with 3 media servers.
I
> >
> have Storagetek/Sun SL8500 with 8 LTO3 tape drives (2 drives are
> dedicated via NDMP to a Netapp 3050). All drives are connected via FC
to
> brocade etc. we have the Shared storage option but I don't think it's
> working properly. How can I verify that its working?
>
> >
> > I believe the engineers that configured the zoning on the switch
> >
> dedicated 2 drives per server and dedicate 2 to the Netapp. Did it
makes
> sense to purchase SSO?
>
> >
> >
> > I was told you should only have 2 LTO3 drives per servers because of
> >
> "shoe shining" and the servers ability to handle more than 2 drives
> (Dell 2950's quad cores with 8gig of ram). I am wondering if the
switch
> should be rezoned to make use of SSO or can the zoning have an impact
on
> how SSO should be configured? How can these 2 play together?
>
> >
> > As you can see I am all confused and would love for someone to
explain
> >
> this in simple terms.
>
> >
> > thanks
> >
>
>
>
+--
> |This was sent by tburrell_mn < at > yahoo.com via Backup Central.
> |Forward SPAM to abuse < at > backupcentral.com.
>
+--
>
>
> The information contained in this email message and its attachments
> is intended
> only for the private and confidential use of the recipient(s) named
> above, unless the sender expressly agrees otherwise. Transmission
> of email over the Internet
> is not a secure communications medium. If you are requesting or
> have requested
> the transmittal of personal data, as defined in applicable privacy
> laws by means
> of email or in an attachment to email you must select a more
> secure alternate means of transmittal that supports your
> obligations to protect such personal data. If the reader of this
> message is not the intended recipient and/or you have received this
> email in error, you must take no action based on the information in
> this email and you are hereby notified that any dissemination,
> misuse, copying, or disclosure of this communication is strictly
> prohibited. If you have received
> this communication in error, please notify us immediately by email
> and delete the original message.
[Embarassed] [Embarassed]
+--
|This was sent by tburrell...@yahoo.com via Backup Cen
Re: [Veritas-bu] SSO Option for LTO3 drives
Another vote for SSO. Whoever dedicated the 2 drives per server doesn't understand SSO. The person that suggested they were "conservative" was being too kind. The adjectives I would use for them would suggest they rode the short bus to school. -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Jayles Sent: Wednesday, July 01, 2009 2:37 AM To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU Subject: [Veritas-bu] SSO Option for LTO3 drives mdonaldson wrote: > > This isn't the case. SSO is used to share a single tape drive among > multiple media servers. It's the sharing & locking mechanism for device > sharing. I could have zoned my 20 drives, one each, to my 19 media > servers and not needed SSO. What Judy describes is right, though, if I > lose the drive zoned to that server, it's not doing backups until that > drive is repaired. > > If you've got SSO licensed, I suggest zoning all tape drives to all > media servers (careful - you have to name them correctly via tpconfig or > it doesn't work right). You can them limit the number of drives used by > each media server when the backup occurs via the max-drives setting I > the storage unit (as Judy also said). > > -M > > What you mentioned is correct I sell SSO to my customer too In his scenario, suggest to review the whole backup infra, the Share Storage Option is not cheap and do not waste money to purchase if no requirement. Review the infra specially with the resources of the tape drives, then review your backup window. I believe there might be alot of redunacy. Good luck mate! [Wink] ___ Veritas-bu maillist - Veritas-bu < at > mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu < at > mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu[/quote] +-- |This was sent by jayles...@gmail.com via Backup Central. |Forward SPAM to ab...@backupcentral.com. +-- ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu Please consider our environment before printing this e-mail or attachments. -- CONFIDENTIALITY NOTICE: This e-mail may contain privileged or confidential information and is for the sole use of the intended recipient(s). If you are not the intended recipient, any disclosure, copying, distribution, or use of the contents of this information is prohibited and may be unlawful. If you have received this electronic transmission in error, please reply immediately to the sender that you have received the message in error, and delete it. Thank you. -- ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] SSO Option for LTO3 drives
The advice you've got is correct - with the number of media servers that
you have, all drives should be zoned to all media servers. You should use
the Device Configuration Wizard on the Master Server to set this up - do
not use tpconfig on the media servers unless you are very, very sure what
you are doing. The wizard does a lot of checking that all definitions are
consistent. If you do it using tpconfig and anything on any media server
is 'a little different' it will not work properly. Don't get me wrong, we
script CLI stuff all the time, but in this case, use the wizard.
As you are using 6.5 I understand that you can actually share the drives
currently dedicated to the NetApp, but I've not been there as our NetApp
NDMP backup is not on 6.x yet. You do need to be a little careful as it
can mean that non-NDMP backups can be sent to the NDMP drives and
vice-versa - there was a touch file to disable this at 5.1, not sure if it
is still used at 6.5.
If your system grows don't let too many media servers share a drive, or it
can get out of hand. We've got some drives with silly numbers of servers
having access - there are only 24 hours in a day and if a drive is in use,
it is busy - adding more servers to a drive doesn't add resources! It can
make big problems if your FC is not correctly configured to limit the
impact of a server reboot. Do it wrong and a reboot of any server sharing
the drive will reset the drive. If your are using the default settings
they may be the wrong settings, as vendors often default to settings for
disk, which don't suit tape at all (e.g. queue depth). If you have
multipath disk, the vendor kit (Powerpath, Securepath etc) may set very
unsuitable settings as timeouts for multipath disk failover are very, very
wrong for tape.
2 LTO3 drives seems low for quad core servers. It used to be something
like 1 GHz CPU per 1GbE interface plus 1.5GHZ CPU per tape drive. I'd
expect that kind of server to cope with 2 x LTO4 or maybe 4 x LTO3 -
depends on compressibility of data, whether you are backing up D2D2T and
many other things. As always, look at the bpbpkar logs on the clients,
and the bptm logs on the media servers, and look at the wait & delay
times. This rather ugly scrap of shell script I use for testing, it looks
at the bptm log and will show if you are waiting for empty buffers (so the
tape drive is slowing you down) or the full buffers (the clients are not
sending data fast enough):
#!/usr/bin/ksh
#*+
#* Script to read a bptm log and print out wait & delay figures.
#* Takes one parameter, the log file name with path is not in the current
directory.
#* -
awk ' \
/waited for empty/ \
{ \
if ( $20 == "bytes" )
{ i_data=$19/1048576 }
else
{ i_data=$19/1024 };
printf ("%s\t%s\t%d\ttimes\t%s\t%.2f\tminutes\t%s\t%8.2f Mbytes\n", \
$1,$9,$13,$15,$16/3000,$18,i_data) \
}' $1
awk '/waited for full/ { OFS="\t"; printf
("%s\t%s\t%d\ttimes\t%s\t%.2f\tminutes\n",$1,$5,$9,$11,$12/2000) }' $1
Example output:
04:05:40.245waited 6943times delayed 12.23 minutes
Looking at it I've assumed that you have not adjusted the wait or delay
factors. If you look at the delay times and compare them with the total
elapsed time for the job you can see where time is wasted. In your case
you want to know if the media server is coping with the load, so I'd guess
you want to aim for 'waited for empty' being non-zero as that would show
that your media server was keeping up with the tape drives.
Now if your media servers are Windows....
William D L Brown
veritas-bu-boun...@mailman.eng.auburn.edu wrote on 30/06/2009 21:54:38:
> I have 1 windows master running Netbackup 6.5 with 3 media servers.
> I have Storagetek/Sun SL8500 with 8 LTO3 tape drives (2 drives are
> dedicated via NDMP to a Netapp 3050). All drives are connected via
> FC to brocade etc. we have the Shared storage option but I don?t
> think it?s working properly. How can I verify that its working?
>
> I believe the engineers that configured the zoning on the switch
> dedicated 2 drives per server and dedicate 2 to the Netapp. Did it
> makes sense to purchase SSO?
>
>
> I was told you should only have 2 LTO3 drives per servers because of
> ?shoe shining? and the servers ability to handle more than 2 drives
> (Dell 2950?s quad cores with 8gig of ram). I am wondering if the
> switch should be rezoned to make use of SSO or can the zoning have
> an impact on how SSO should be configured? How can these 2 play
together?
>
> As you can see I am all confused and would love for someone to
> explain this in simple terms.
>
> thanks ___
> Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
---
This e-mail was sent by GlaxoSmithKline Services Unlimited
(registered in England
Re: [Veritas-bu] SSO Option for LTO3 drives
>The way I understand SSO, is if you're using anything more complicated >than a stand alone tape drive, then you need SSO (I could be totally >incorrect here, this is me trying to summarize SSO in 20 words or less). This isn't the case. SSO is used to share a single tape drive among multiple media servers. It's the sharing & locking mechanism for device sharing. I could have zoned my 20 drives, one each, to my 19 media servers and not needed SSO. What Judy describes is right, though, if I lose the drive zoned to that server, it's not doing backups until that drive is repaired. If you've got SSO licensed, I suggest zoning all tape drives to all media servers (careful - you have to name them correctly via tpconfig or it doesn't work right). You can them limit the number of drives used by each media server when the backup occurs via the max-drives setting I the storage unit (as Judy also said). -M -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Heathe Kyle Yeakley Sent: Tuesday, June 30, 2009 3:16 PM To: David Turner Cc: veritas-bu@mailman.eng.auburn.edu; Will Tucker Subject: Re: [Veritas-bu] SSO Option for LTO3 drives The "shoe-shining" issue is resolved by enabling multiplexing on your backups. By having multiple jobs writing to the same tape, the tape doesn't have any idle time to shoe shine your drive. I have 2 tape libraries, both with 12 drives a piece. All 24 drives and 2 robots are presented to my 1 Linux Master, 2 Linux Media, and 3 Tru64 SAN Media servers. All 6 systems see all 24 tapes drives and the robot for each library. The factor that allows me to do this is that my 6 servers all have multipathing support built into the OS. If your Windows server is connected to a SAN, I'm 99% certain you have multipathing in your OS somewhere, either built into the kernel, added via a software pack, or managed by the HBAs on the server. The way I understand SSO, is if you're using anything more complicated than a stand alone tape drive, then you need SSO (I could be totally incorrect here, this is me trying to summarize SSO in 20 words or less). Given the little I know of your SSO configuration, I'd start with going over the way your SAN is zoned with a fine tooth comb. 90% of all the SSO issues I've had with my 2 libraries existed in the SAN itself, not in NetBackup or the libraries. Hope this helps. - Heathe Kyle Yeakley David Turner wrote: > > I have 1 windows master running Netbackup 6.5 with 3 media servers. I > have Storagetek/Sun SL8500 with 8 LTO3 tape drives (2 drives are > dedicated via NDMP to a Netapp 3050). All drives are connected via FC > to brocade etc. we have the Shared storage option but I don't think > it's working properly. How can I verify that its working? > > I believe the engineers that configured the zoning on the switch > dedicated 2 drives per server and dedicate 2 to the Netapp. Did it > makes sense to purchase SSO? > > I was told you should only have 2 LTO3 drives per servers because of > "shoe shining" and the servers ability to handle more than 2 drives > (Dell 2950's quad cores with 8gig of ram). I am wondering if the > switch should be rezoned to make use of SSO or can the zoning have an > impact on how SSO should be configured? How can these 2 play together? > > As you can see I am all confused and would love for someone to explain > this in simple terms. > > thanks > > > > ___ > Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu > ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] SSO Option for LTO3 drives
I should also add, that even though I have 18 drives avail to each server, the number of drives used at one time is still based on policy and which storage unit it uses ( as you set how many tape drives are in a storage unit.) So serverA zoned to all 18 drives. Storage unit is 2 drives at a time. Then serverA still only uses 2 drives at a time out of the 18 that might be available. From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of judy_hinchcli...@administaff.com Sent: Tuesday, June 30, 2009 4:23 PM To: mark.donald...@staples.com; dtur...@manh.com; veritas-bu@mailman.eng.auburn.edu Cc: wtuc...@manh.com Subject: Re: [Veritas-bu] SSO Option for LTO3 drives I agree if you are only zoning each drive to one media server the SSO is not needed. However! If those two drives fail - bad tape - bad whatever and are down then that media server has NO tape drives avail. I have 18 tape drives and have zoned all 18 to all of them to all 4 of my media servers. So they use tape drives based on NB's algorithm of which drive to use next kind of evening out the usage some what, and if two drives go down the there are still 16 drives available for the media server to try and find one not busy. From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Donaldson, Mark Sent: Tuesday, June 30, 2009 4:05 PM To: David Turner; veritas-bu@mailman.eng.auburn.edu Cc: Will Tucker Subject: Re: [Veritas-bu] SSO Option for LTO3 drives If a drive is visible to one and only one server because of zoning , then SSO isn't necessary. SSO is used to share a single drive among multiple media servers. Each server uses it in turn but then releases it after use to be used by a different server. While you may be licensed for SSO, what you're describing won't need it. You could still limit the use of drives by each media server through multiple techniques - storage units "max drive" setting comes to mind - so that only X number of drives are used simultaneously per media server. You could still have it choose that X drives from a shared pool of all your drives. I suspect your servers are more than capable of keeping two drives busy (subject to throttling introduced by your back-end SAN & HBA speeds). Your storage guys are, IMO, being too conservative. From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of David Turner Sent: Tuesday, June 30, 2009 2:55 PM To: veritas-bu@mailman.eng.auburn.edu Cc: Will Tucker Subject: [Veritas-bu] SSO Option for LTO3 drives I have 1 windows master running Netbackup 6.5 with 3 media servers. I have Storagetek/Sun SL8500 with 8 LTO3 tape drives (2 drives are dedicated via NDMP to a Netapp 3050). All drives are connected via FC to brocade etc. we have the Shared storage option but I don't think it's working properly. How can I verify that its working? I believe the engineers that configured the zoning on the switch dedicated 2 drives per server and dedicate 2 to the Netapp. Did it makes sense to purchase SSO? I was told you should only have 2 LTO3 drives per servers because of "shoe shining" and the servers ability to handle more than 2 drives (Dell 2950's quad cores with 8gig of ram). I am wondering if the switch should be rezoned to make use of SSO or can the zoning have an impact on how SSO should be configured? How can these 2 play together? As you can see I am all confused and would love for someone to explain this in simple terms. thanks ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] SSO Option for LTO3 drives
I agree if you are only zoning each drive to one media server the SSO is not needed. However! If those two drives fail - bad tape - bad whatever and are down then that media server has NO tape drives avail. I have 18 tape drives and have zoned all 18 to all of them to all 4 of my media servers. So they use tape drives based on NB's algorithm of which drive to use next kind of evening out the usage some what, and if two drives go down the there are still 16 drives available for the media server to try and find one not busy. From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Donaldson, Mark Sent: Tuesday, June 30, 2009 4:05 PM To: David Turner; veritas-bu@mailman.eng.auburn.edu Cc: Will Tucker Subject: Re: [Veritas-bu] SSO Option for LTO3 drives If a drive is visible to one and only one server because of zoning , then SSO isn't necessary. SSO is used to share a single drive among multiple media servers. Each server uses it in turn but then releases it after use to be used by a different server. While you may be licensed for SSO, what you're describing won't need it. You could still limit the use of drives by each media server through multiple techniques - storage units "max drive" setting comes to mind - so that only X number of drives are used simultaneously per media server. You could still have it choose that X drives from a shared pool of all your drives. I suspect your servers are more than capable of keeping two drives busy (subject to throttling introduced by your back-end SAN & HBA speeds). Your storage guys are, IMO, being too conservative. From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of David Turner Sent: Tuesday, June 30, 2009 2:55 PM To: veritas-bu@mailman.eng.auburn.edu Cc: Will Tucker Subject: [Veritas-bu] SSO Option for LTO3 drives I have 1 windows master running Netbackup 6.5 with 3 media servers. I have Storagetek/Sun SL8500 with 8 LTO3 tape drives (2 drives are dedicated via NDMP to a Netapp 3050). All drives are connected via FC to brocade etc. we have the Shared storage option but I don't think it's working properly. How can I verify that its working? I believe the engineers that configured the zoning on the switch dedicated 2 drives per server and dedicate 2 to the Netapp. Did it makes sense to purchase SSO? I was told you should only have 2 LTO3 drives per servers because of "shoe shining" and the servers ability to handle more than 2 drives (Dell 2950's quad cores with 8gig of ram). I am wondering if the switch should be rezoned to make use of SSO or can the zoning have an impact on how SSO should be configured? How can these 2 play together? As you can see I am all confused and would love for someone to explain this in simple terms. thanks ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] SSO Option for LTO3 drives
The "shoe-shining" issue is resolved by enabling multiplexing on your backups. By having multiple jobs writing to the same tape, the tape doesn't have any idle time to shoe shine your drive. I have 2 tape libraries, both with 12 drives a piece. All 24 drives and 2 robots are presented to my 1 Linux Master, 2 Linux Media, and 3 Tru64 SAN Media servers. All 6 systems see all 24 tapes drives and the robot for each library. The factor that allows me to do this is that my 6 servers all have multipathing support built into the OS. If your Windows server is connected to a SAN, I'm 99% certain you have multipathing in your OS somewhere, either built into the kernel, added via a software pack, or managed by the HBAs on the server. The way I understand SSO, is if you're using anything more complicated than a stand alone tape drive, then you need SSO (I could be totally incorrect here, this is me trying to summarize SSO in 20 words or less). Given the little I know of your SSO configuration, I'd start with going over the way your SAN is zoned with a fine tooth comb. 90% of all the SSO issues I've had with my 2 libraries existed in the SAN itself, not in NetBackup or the libraries. Hope this helps. - Heathe Kyle Yeakley David Turner wrote: > > I have 1 windows master running Netbackup 6.5 with 3 media servers. I > have Storagetek/Sun SL8500 with 8 LTO3 tape drives (2 drives are > dedicated via NDMP to a Netapp 3050). All drives are connected via FC > to brocade etc. we have the Shared storage option but I don’t think > it’s working properly. How can I verify that its working? > > I believe the engineers that configured the zoning on the switch > dedicated 2 drives per server and dedicate 2 to the Netapp. Did it > makes sense to purchase SSO? > > I was told you should only have 2 LTO3 drives per servers because of > “shoe shining” and the servers ability to handle more than 2 drives > (Dell 2950’s quad cores with 8gig of ram). I am wondering if the > switch should be rezoned to make use of SSO or can the zoning have an > impact on how SSO should be configured? How can these 2 play together? > > As you can see I am all confused and would love for someone to explain > this in simple terms. > > thanks > > > > ___ > Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu > ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] SSO Option for LTO3 drives
If a drive is visible to one and only one server because of zoning , then SSO isn't necessary. SSO is used to share a single drive among multiple media servers. Each server uses it in turn but then releases it after use to be used by a different server. While you may be licensed for SSO, what you're describing won't need it. You could still limit the use of drives by each media server through multiple techniques - storage units "max drive" setting comes to mind - so that only X number of drives are used simultaneously per media server. You could still have it choose that X drives from a shared pool of all your drives. I suspect your servers are more than capable of keeping two drives busy (subject to throttling introduced by your back-end SAN & HBA speeds). Your storage guys are, IMO, being too conservative. From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of David Turner Sent: Tuesday, June 30, 2009 2:55 PM To: veritas-bu@mailman.eng.auburn.edu Cc: Will Tucker Subject: [Veritas-bu] SSO Option for LTO3 drives I have 1 windows master running Netbackup 6.5 with 3 media servers. I have Storagetek/Sun SL8500 with 8 LTO3 tape drives (2 drives are dedicated via NDMP to a Netapp 3050). All drives are connected via FC to brocade etc. we have the Shared storage option but I don't think it's working properly. How can I verify that its working? I believe the engineers that configured the zoning on the switch dedicated 2 drives per server and dedicate 2 to the Netapp. Did it makes sense to purchase SSO? I was told you should only have 2 LTO3 drives per servers because of "shoe shining" and the servers ability to handle more than 2 drives (Dell 2950's quad cores with 8gig of ram). I am wondering if the switch should be rezoned to make use of SSO or can the zoning have an impact on how SSO should be configured? How can these 2 play together? As you can see I am all confused and would love for someone to explain this in simple terms. thanks ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
RE: [Veritas-bu] SSO option
Title: Message Greg Shared Storage Option (SSO) - ideally, when you want a new Media Server to connect to the Robot / Library and use it :-) I think its mainly SAN based solution, and also, reduces storage costs (ie: why buy 2 LTO3 Robots and drives, when you can share 1). Thats how I understand it :-) Its a seperate license too :-( which means it costs money! but not as much as a new library :-) Think of it as the ability to share drives "dynamically" between Media Servers! HTH Regards Simon Weaver3rd Line Technical SupportWindows Domain Administrator EADS Astrium Limited, B32AA IM (DCS)Anchorage Road, Portsmouth, PO3 5PU Email: [EMAIL PROTECTED] -Original Message-From: Hindle, Greg [mailto:[EMAIL PROTECTED] Sent: 03 April 2006 14:31To: veritas-bu@mailman.eng.auburn.eduSubject: [Veritas-bu] SSO option Nb 5.0 mp6 Solaris 9 Can someone explain how SSO works and when it is best to use it? Greg >>> This e-mail and any attachments are confidential, may contain legal, professional or other privileged information, and are intended solely for the addressee. If you are not the intended recipient, do not use the information in this e-mail in any way, delete this e-mail and notify the sender. CEG-IP2 This email is for the intended addressee only. If you have received it in error then you must not use, retain, disseminate or otherwise deal with it. Please notify the sender by return email. The views of the author may not necessarily constitute the views of EADS Astrium Limited. Nothing in this email shall bind EADS Astrium Limited in any contract or obligation. EADS Astrium Limited, Registered in England and Wales No. 2449259 Registered Office: Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS, England
RE: [Veritas-bu] SSO option
Title: Message SSO is used to share tape drives between multiple media servers. It's best to use it when you have and number of tape drives and more than 1 media server. It helps if you have native fibre, but you can use a scsi-fibre bridge if your tape drives are still scsi. HTH, Kate -Original Message-From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Hindle, GregSent: Monday, April 03, 2006 9:31 AMTo: veritas-bu@mailman.eng.auburn.eduSubject: [Veritas-bu] SSO option Nb 5.0 mp6 Solaris 9 Can someone explain how SSO works and when it is best to use it? Greg >>> This e-mail and any attachments are confidential, may contain legal, professional or other privileged information, and are intended solely for the addressee. If you are not the intended recipient, do not use the information in this e-mail in any way, delete this e-mail and notify the sender. CEG-IP2 This e-mail may contain confidential or privileged information. If you think you have received this e-mail in error, please advise the sender by reply e-mail and then delete this e-mail immediately. Thank you. Aetna
