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тАО02-07-2007 03:35 AM
тАО02-07-2007 03:35 AM
Is it better to have a few larger disk groups or many smaller disk groups?
Thanks.
Solved! Go to Solution.
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тАО02-07-2007 03:43 AM
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тАО02-07-2007 03:49 AM
тАО02-07-2007 03:49 AM
Re: Best practices for Disk groups
I would suggest having just the 1 disk group unless you have any applications that require sequentially written data you may be better having a seperate disk group for this.
See http://h71028.www7.hp.com/ERC/downloads/5982-9140EN.pdf?jumpid=reg_R1002_USEN, this should help.
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тАО02-07-2007 03:49 AM
тАО02-07-2007 03:49 AM
Re: Best practices for Disk groups
I would suggest having just the 1 disk group for FC and 1 for FATA unless you have any applications that require sequentially written data you may be better having a seperate FC disk group for this.
See http://h71028.www7.hp.com/ERC/downloads/5982-9140EN.pdf?jumpid=reg_R1002_USEN, this should help.
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тАО02-07-2007 04:18 AM
тАО02-07-2007 04:18 AM
Re: Best practices for Disk groups
As per the previous respondents you should add the 6 disks to the existing group as it will give you better performance.
One other thing to note is that you wouldn't be able to create a new disk group anyway, as a disk group must have a minimum of 8 disks...
Cheers,
Rob
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тАО02-07-2007 06:25 PM
тАО02-07-2007 06:25 PM
Re: Best practices for Disk groups
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тАО02-07-2007 06:26 PM
тАО02-07-2007 06:26 PM
Re: Best practices for Disk groups
attachment 2
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тАО02-08-2007 04:20 AM
тАО02-08-2007 04:20 AM
Re: Best practices for Disk groups
As all said, bigger diskgroup has better performance but remember the followings:
1. Rebuilding of DG will take longer in case of HDD failure.
2. Mixing of different sized in same DG (not sure whether you have all of same size or not?), always has overheads.
3. You need to plan for add-on with HP engineer to get an exact picure of your RSS state and may need re-arrangement of RSS disk locations.
4. LAST BUT NOT THE LEAST, IT'S GOOD TO HAVE DOUBLE DISK PROTECTION IN SINGLE DG RATHER THAN TO HAVE SINGLE DISK PROTECTION IN 2 SEPARATE DGs.
Hope my 10 cents worth.