Re: RAC - Configuring Disk Coordinator

2003-07-26 Thread Jared Still

In addition to Matthew's comments, I might add that 
all Veritas documentation is available at support.veritas.com.

Jared

On Friday 25 July 2003 10:04, laura pena wrote:
> - Configuration - Should each of these 3 LUN be on seperate disks?
> - What is the smallest LUN that Hitachi 9570V can be? I guess I can ask our
> rep if no ones knows. -Should these LUNs be mirrored?
> - Coordinator disks are used to support IO fencing can anyone elborate how
> this happens?
>
> Thanks in advance,
>
> Lizz
>
>
>
> -
> Do you Yahoo!?
> Yahoo! SiteBuilder - Free, easy-to-use web site design software

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RE: RAC - Configuring Disk Coordinator

2003-07-25 Thread Matthew Zito
Title: Message



 
 Whoops - I missed  a question in there.  Smallest lun 
possible?  On the older HDS thunder systems, you can make teeny-tiny luns - 
I'm guessing the 9570V is the same way.  Make a raid group and carve a few 
small luns out of it.
 
Matt
--Matthew 
ZitoGridApp SystemsEmail: [EMAIL PROTECTED]Cell: 
646-220-3551Phone: 212-358-8211 x 359http://www.gridapp.com 


  
  -Original Message-From: 
  [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of 
  Matthew ZitoSent: Friday, July 25, 2003 1:54 PMTo: 
  Multiple recipients of list ORACLE-LSubject: RE: RAC - Configuring 
  Disk Coordinator
   
  To 
  answer your questions.
   
  1) 
  Ideally, yes, though they don't need to be.
  2) 
  Absolutely.  Veritas will get very unhappy if it loses access to those 
  disks
  3) 
  SCSI-3 Persistent Reservation.  When a node "malfunctions", another node 
  will issue a SCSI-3 reservation against the 3 coordinator disks.  When 
  the broken node tries to access those disks (as it does every few seconds 
  normally) it will be rejected and the box will panic (I'm pretty sure it 
  panics - test it)
   
  Feel 
  free to email me off-list if you have any other questions.
   
  Thanks,
  Matt
   
  --Matthew ZitoGridApp SystemsEmail: 
  [EMAIL PROTECTED]Cell: 646-220-3551Phone: 212-358-8211 x 359http://www.gridapp.com 
  

-Original Message-From: 
[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of 
laura penaSent: Friday, July 25, 2003 1:04 PMTo: 
Multiple recipients of list ORACLE-LSubject: Re: RAC - 
Configuring Disk Coordinator

Sorry all my message got hacked here is the first paragraph
 
Going through the Veritas installation guide  (pg 47) and I have a 
question on the required 3 LUN creation needed to support RAC for Veritas 
DBE/AC, when setting up Disk Coordinator:laura pena 
<[EMAIL PROTECTED]> wrote: 

  
  - Configuration - Should each of these 3 LUN be on seperate 
  disks?- What is the smallest LUN that Hitachi 9570V can be? I guess I 
  can ask our rep if no ones knows.-Should these LUNs be mirrored? - 
  Coordinator disks are used to support IO fencing can anyone elborate how 
  this happens?
   
  Thanks in advance,
   
  Lizz
  
  
  Do you Yahoo!?Yahoo! 
  SiteBuilder - Free, easy-to-use web site design 
software


Do you Yahoo!?Yahoo! 
SiteBuilder - Free, easy-to-use web site design 
software


RE: RAC - Configuring Disk Coordinator

2003-07-25 Thread Matthew Zito
Title: Message



 
To 
answer your questions.
 
1) 
Ideally, yes, though they don't need to be.
2) 
Absolutely.  Veritas will get very unhappy if it loses access to those 
disks
3) 
SCSI-3 Persistent Reservation.  When a node "malfunctions", another node 
will issue a SCSI-3 reservation against the 3 coordinator disks.  When the 
broken node tries to access those disks (as it does every few seconds normally) 
it will be rejected and the box will panic (I'm pretty sure it panics - test 
it)
 
Feel 
free to email me off-list if you have any other questions.
 
Thanks,
Matt
 
--Matthew ZitoGridApp SystemsEmail: 
[EMAIL PROTECTED]Cell: 646-220-3551Phone: 212-358-8211 x 359http://www.gridapp.com 

  
  -Original Message-From: 
  [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of laura 
  penaSent: Friday, July 25, 2003 1:04 PMTo: Multiple 
  recipients of list ORACLE-LSubject: Re: RAC - Configuring Disk 
  Coordinator
  
  Sorry all my message got hacked here is the first paragraph
   
  Going through the Veritas installation guide  (pg 47) and I have a 
  question on the required 3 LUN creation needed to support RAC for Veritas 
  DBE/AC, when setting up Disk Coordinator:laura pena 
  <[EMAIL PROTECTED]> wrote: 
  

- Configuration - Should each of these 3 LUN be on seperate disks?- 
What is the smallest LUN that Hitachi 9570V can be? I guess I can ask our 
rep if no ones knows.-Should these LUNs be mirrored? - Coordinator 
disks are used to support IO fencing can anyone elborate how this 
happens?
 
Thanks in advance,
 
Lizz


Do you Yahoo!?Yahoo! 
SiteBuilder - Free, easy-to-use web site design 
software
  
  
  Do you Yahoo!?Yahoo! 
  SiteBuilder - Free, easy-to-use web site design 
software


Re: RAC - Configuring Disk Coordinator

2003-07-25 Thread laura pena

Sorry all my message got hacked here is the first paragraph
 
Going through the Veritas installation guide  (pg 47) and I have a question on the required 3 LUN creation needed to support RAC for Veritas DBE/AC, when setting up Disk Coordinator:laura pena <[EMAIL PROTECTED]> wrote:


- Configuration - Should each of these 3 LUN be on seperate disks?- What is the smallest LUN that Hitachi 9570V can be? I guess I can ask our rep if no ones knows.-Should these LUNs be mirrored? - Coordinator disks are used to support IO fencing can anyone elborate how this happens?
 
Thanks in advance,
 
Lizz


Do you Yahoo!?Yahoo! SiteBuilder - Free, easy-to-use web site design software
Do you Yahoo!?
Yahoo! SiteBuilder - Free, easy-to-use web site design software

RAC - Configuring Disk Coordinator

2003-07-25 Thread laura pena

- Configuration - Should each of these 3 LUN be on seperate disks?- What is the smallest LUN that Hitachi 9570V can be? I guess I can ask our rep if no ones knows.-Should these LUNs be mirrored? - Coordinator disks are used to support IO fencing can anyone elborate how this happens?
 
Thanks in advance,
 
Lizz
Do you Yahoo!?
Yahoo! SiteBuilder - Free, easy-to-use web site design software