Re: two tape libraries with one configuration

[Chris Hoogendyk]

That sounds good. I'm on Amanda 3.3.6, but I just downloaded the source for 
3.4.5, and I can build that.

Any issues with building 3.4.5 over the top of 3.3.6?

With all the changes/additions to 3.4, I guess I'll be spending some quality 
time with man pages. ;-)


On 7/17/17 5:14 PM, Jean-Louis Martineau wrote:

It can only be done with amanda 3.4, where you can define 2 storage and
put on the dumptype on which storage you want the dump to go.

Jean-Louis

On 14/07/17 05:38 PM, Chris Hoogendyk wrote:
> I've just acquired and set up a new Overland T48 with two LTO7 tape
> drives.
>
> I already have an Overland T24 with one LTO6 tape drive that I've been
> using for a few years.
>
> I plan on transitioning our large data to the LTO7 and thought I might
> keep the basic administrative backups on the LTO6, using the same
> instance of Amanda.
>
> Anyone know how to configure this? I can imagine defining two changers
> and specifying which to use in the dumptype, but I don't see quite how
> that would be done.
>
> My changer is as follows. I've added the new device ID as a comment
> for the moment. The new tape drives came up as nst1 and nst2.
>
> define changer NEO200 {
> tpchanger
> "chg-robot:/dev/tape/by-id/scsi-1IBM_3573-TL_00L2U78AB542_LL0" # your
> changer device file (T24)
> #>>> NOTE!!! following is the new (7/14/2017) LTO7 48slot 2drive tape
> library. Need to work out transition.
> # tpchanger
> "chg-robot:/dev/tape/by-id/scsi-1BDT_FlexStor_II_00MX64200626_LL0" #
> your changer device file (T48)
> property "tape-device" "0=tape:/dev/nst0" # your tape drive
> device file
> property "use-slots" "1-22"
> }
> tpchanger "NEO200"
>
> Just as an aside, we are starting to set up new data arrays using 10TB
> HGST Helium filled drives — eight of them in the last month or so
> (multipath SAS configured mdadm raid6 with lvm). Almost makes you want
> to pull out your hair thinking about backups.
>
>


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--
---

Chris Hoogendyk

-
   O__   Systems Administrator
  c/ /'_ --- Biology & Geosciences Departments
 (*) \(*) -- 315 Morrill Science Center
~~ - University of Massachusetts, Amherst



---

Erdös 4

Re: two tape libraries with one configuration

[Chris Hoogendyk]

OK. So, for a more general question, how do people configure and use multiple drives in a tape 
library? How does Amanda plan for them and make use of them? How do you tell Amanda that it should 
use one tape in one drive and another tape in the other drive as opposed to finishing one tape and 
then continuing on to a second tape (the runtapes parameter)?


Any pages in the wiki that discuss the configuration and behavior of multiple tape drives in a 
library? And parameters that affect the behavior?



On 7/17/17 2:35 AM, Lorenzo Marcantonio wrote:

On Fri, Jul 14, 2017 at 05:38:49PM -0400, Chris Hoogendyk wrote:

I've just acquired and set up a new Overland T48 with two LTO7 tape drives.

I already have an Overland T24 with one LTO6 tape drive that I've been using 
for a few years.

I plan on transitioning our large data to the LTO7 and thought I might keep
the basic administrative backups on the LTO6, using the same instance of
Amanda.

Anyone know how to configure this? I can imagine defining two changers and
specifying which to use in the dumptype, but I don't see quite how that
would be done.

You'll need two different configurations. The planner tries to fill a
certain amount of tapes (of a determined size) so it can't handle mixed
storage like you suggest.

If they were of the same size you could play with the aggregate changer
but that's not the case.

I'd suggest one configuration for the admin data on LTO6 and one
configuration for the other data on LTO7 (externally scheduled as
appropriate)



--
---

Chris Hoogendyk

-
   O__   Systems Administrator
  c/ /'_ --- Biology & Geosciences Departments
 (*) \(*) -- 315 Morrill Science Center
~~ - University of Massachusetts, Amherst



---

Erdös 4

Re: two tape libraries with one configuration

[Jean-Louis Martineau]

It can only be done with amanda 3.4, where you can define 2 storage and 
put on the dumptype on which storage you want the dump to go.


Jean-Louis

On 14/07/17 05:38 PM, Chris Hoogendyk wrote:
I've just acquired and set up a new Overland T48 with two LTO7 tape 
drives.


I already have an Overland T24 with one LTO6 tape drive that I've been 
using for a few years.


I plan on transitioning our large data to the LTO7 and thought I might 
keep the basic administrative backups on the LTO6, using the same 
instance of Amanda.


Anyone know how to configure this? I can imagine defining two changers 
and specifying which to use in the dumptype, but I don't see quite how 
that would be done.


My changer is as follows. I've added the new device ID as a comment 
for the moment. The new tape drives came up as nst1 and nst2.


define changer NEO200 {
   tpchanger 
"chg-robot:/dev/tape/by-id/scsi-1IBM_3573-TL_00L2U78AB542_LL0" # your 
changer device file (T24)
#>>> NOTE!!! following is the new (7/14/2017) LTO7 48slot 2drive tape 
library. Need to work out transition.
#   tpchanger 
"chg-robot:/dev/tape/by-id/scsi-1BDT_FlexStor_II_00MX64200626_LL0" # 
your changer device file (T48)
   property "tape-device" "0=tape:/dev/nst0"# your tape drive 
device file

   property "use-slots" "1-22"
 }
 tpchanger "NEO200"

Just as an aside, we are starting to set up new data arrays using 10TB 
HGST Helium filled drives — eight of them in the last month or so 
(multipath SAS configured mdadm raid6 with lvm). Almost makes you want 
to pull out your hair thinking about backups.




This message is the property of CARBONITE, INC. and may contain confidential or 
privileged information.
If this message has been delivered to you by mistake, then do not copy or 
deliver this message to anyone.  Instead, destroy it and notify me by reply 
e-mail

Re: two tape libraries with one configuration

[Lorenzo Marcantonio]

On Fri, Jul 14, 2017 at 05:38:49PM -0400, Chris Hoogendyk wrote:
> I've just acquired and set up a new Overland T48 with two LTO7 tape drives.
> 
> I already have an Overland T24 with one LTO6 tape drive that I've been using 
> for a few years.
> 
> I plan on transitioning our large data to the LTO7 and thought I might keep
> the basic administrative backups on the LTO6, using the same instance of
> Amanda.
> 
> Anyone know how to configure this? I can imagine defining two changers and
> specifying which to use in the dumptype, but I don't see quite how that
> would be done.

You'll need two different configurations. The planner tries to fill a
certain amount of tapes (of a determined size) so it can't handle mixed
storage like you suggest.

If they were of the same size you could play with the aggregate changer
but that's not the case.

I'd suggest one configuration for the admin data on LTO6 and one
configuration for the other data on LTO7 (externally scheduled as
appropriate)

-- 
Lorenzo Marcantonio


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two tape libraries with one configuration

[Chris Hoogendyk]

I've just acquired and set up a new Overland T48 with two LTO7 tape drives.

I already have an Overland T24 with one LTO6 tape drive that I've been using 
for a few years.

I plan on transitioning our large data to the LTO7 and thought I might keep the basic administrative 
backups on the LTO6, using the same instance of Amanda.


Anyone know how to configure this? I can imagine defining two changers and specifying which to use 
in the dumptype, but I don't see quite how that would be done.


My changer is as follows. I've added the new device ID as a comment for the moment. The new tape 
drives came up as nst1 and nst2.


define changer NEO200 {
   tpchanger "chg-robot:/dev/tape/by-id/scsi-1IBM_3573-TL_00L2U78AB542_LL0" # your changer device 
file (T24)
#>>> NOTE!!! following is the new (7/14/2017) LTO7 48slot 2drive tape library. Need to work out 
transition.
#   tpchanger "chg-robot:/dev/tape/by-id/scsi-1BDT_FlexStor_II_00MX64200626_LL0" # your changer 
device file (T48)

   property "tape-device" "0=tape:/dev/nst0"# your tape drive device file
   property "use-slots" "1-22"
 }
 tpchanger "NEO200"

Just as an aside, we are starting to set up new data arrays using 10TB HGST Helium filled drives — 
eight of them in the last month or so (multipath SAS configured mdadm raid6 with lvm). Almost makes 
you want to pull out your hair thinking about backups.



--
---

Chris Hoogendyk

-
   O__   Systems Administrator
  c/ /'_ --- Biology & Geosciences Departments
 (*) \(*) -- 315 Morrill Science Center
~~ - University of Massachusetts, Amherst



---

Erdös 4