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Anonymous User
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August 30th, 2013 11:00
Need suggetions to expand a pool
I got a request to create 1TB lun on VNX from a certain pool. Pool has only 400GB available. Pool is created with SAS disks only. I tried to expand the pool but available disks are NLSAS drives. Can i extended pool using NLSAS disks, Does it gets any performance issues.
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Posted August 30th, 2013 15:00
Yes of course it does have performance implications to add slower disks
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Posted September 1st, 2013 22:00
You can enable FAST VP if you really want to do this. FAST VP can move the hot/warm data to performance tier, and cool data to capacity tier.
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Posted September 1st, 2013 23:00
Absolutely, you could do that.
Please keep in mind that in a tier-enabled storage environment, you could leverage FAST cache which is for performance improvement while FAST VP is for TCO, the cost improvement.
Use a 2-tier pool with SAS and NLSAS and enable FAST cache as a cost-effective way of realizeing Flash performance without dedicated flash drive in the pool. this will relieve you from any performance issue in a certain way.
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Posted September 2nd, 2013 07:00
need to have SSD to enable Fast Cache, does he have any ?
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Posted September 4th, 2013 11:00
We have enabled Fast Cache on this pool.
I checked the sizes but drive size are different what was in pool and what available. I have extended the pool which has NLSAS drvies with same size.
dynamox
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344
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Posted August 30th, 2013 13:00
code on VNX and how many NLSAS drives ?