HPE Storage Users Group

A Storage Administrator Community




Post new topic Reply to topic  [ 5 posts ] 
Author Message
 Post subject: Number of Volumes on a CPG
PostPosted: Thu Dec 08, 2011 12:23 pm 

Joined: Thu Dec 08, 2011 10:58 am
Posts: 3
Just read in the guide that a CPG can have up to 64 volumes but it is not recommended to have more than 32. My client is running 69 off one CPG!!!!

What's the impact of having more than 32 volumes? This seems quite low to me. Is it not best practice to have only a few CPGs with as amany spindles as possible in those?


Top
 Profile  
Reply with quote  
 Post subject: Re: Number of Volumes on a CPG
PostPosted: Mon Dec 12, 2011 5:21 am 

Joined: Mon Dec 12, 2011 5:08 am
Posts: 77
The limit is not 64 volumes.

A Common Provisioning Group (CPG) creates a virtual pool of logical disks that allows up to
4,095 virtual volumes to share the CPG's resources and allocates space on demand

The impact of having many volumes in a CPG is that it will take ages to tune it if you ever need to do that.

So its preferred to have many CPG's instead of one big one.


Top
 Profile  
Reply with quote  
 Post subject: Re: Number of Volumes on a CPG
PostPosted: Sat Dec 24, 2011 1:22 am 
Site Admin
User avatar

Joined: Tue Aug 18, 2009 10:35 pm
Posts: 1328
Location: Dallas, Texas
That was changed between inserv version 2.24 and 2.3. For 2.24 and older the 32 VV per CPG recommendation is valid.

You can have 1, or 20, cpgs with access to every spindle in the system. CPGs are not like raid groups.
Multiple cpgs can use the same spindle.

_________________
Richard Siemers
The views and opinions expressed are my own and do not necessarily reflect those of my employer.


Top
 Profile  
Reply with quote  
 Post subject: Re: Number of Volumes on a CPG
PostPosted: Sun Dec 25, 2011 11:07 am 

Joined: Sun Dec 25, 2011 10:43 am
Posts: 2
Hello

Every time you have a question about a configuration and you need to know if it is supported or not, please refer to the latest version of the Config Matrix.

I don't give you any figure because I don't know anything about your system.

Some configs out of the Config Matrix may work, but it's recommended to avoid them if you can.


Top
 Profile  
Reply with quote  
 Post subject: Re: Number of Volumes on a CPG
PostPosted: Thu Jun 21, 2012 2:04 am 

Joined: Thu May 31, 2012 2:24 am
Posts: 1
What are best practices for 3.1.1 considering max number of CPG's on a 3PAR P10000 and max number of virtual volumes per CPG ?


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 


Who is online

Users browsing this forum: Google [Bot] and 43 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group | DVGFX2 by: Matt