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тАО01-12-2005 02:56 AM
тАО01-12-2005 02:56 AM
Thanks
Solved! Go to Solution.
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тАО01-12-2005 03:47 AM
тАО01-12-2005 03:47 AM
SolutionAs long as you have space to cover the loss of 2 disks, you should be able to just ungroup them. You do not need to do anything with Secure Path. You can do it while it is active, though for better performance/quicker leveling, do it when there is not alot of I/O (nighttime/weekend/etc).
Once the disks are removed, you should be able to immediatelly create the new disk group as the old one is leveling, but you might want to wait a little while just to give it some tie to get started (or finish up).
One thing to consider is your protection level. If your at 2, you effectively cut your raw storage in half with only 8 disks. If your at 1, you cut it by 25%.
Steven
HP Master ASE, Storage, Servers, and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5, vSphere 6.x)
RHCE
NPP3 (Nutanix Platform Professional)
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тАО01-12-2005 04:50 AM
тАО01-12-2005 04:50 AM
Re: Ungrouping disks on EVA3000
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тАО01-12-2005 06:02 AM
тАО01-12-2005 06:02 AM
Re: Ungrouping disks on EVA3000
You calculation sounds OK. So you have about 284*1.25 = 355 GigaBytes raw space free.
355 - 2*72 = about 211 GigaBytes left
Remember that all virtual disks in a disk group are spread over all physical disk drives. By using two disk groups, you will create two different I/O domains. You have now reduced that to 8 physical disks. It is possible that the disks in one disk group are working very heavy while those in the other group are idle.
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тАО01-12-2005 08:21 AM
тАО01-12-2005 08:21 AM
Re: Ungrouping disks on EVA3000
16 spindles vs. 8 spindles....
Also, the "sweet spot" for the EVA was calculated at about 59 drives. (I could be a bit off). This means that as you reach 59 disks in a group, the performance gain is slightly higher than par. After the 60ths disk, the performance gain is not so good.
All disks in one group with single protection would actually yield more available storage than 2 8-disk groups with single protection
Steven
HP Master ASE, Storage, Servers, and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5, vSphere 6.x)
RHCE
NPP3 (Nutanix Platform Professional)
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тАО01-12-2005 08:24 AM
тАО01-12-2005 08:24 AM
Re: Ungrouping disks on EVA3000
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тАО01-12-2005 11:58 AM
тАО01-12-2005 11:58 AM