VNX 5800 - expanding storage pool issue.
I am trying to expand a Storage Pool on a EMC VNX 5800 array. The existing Pool has 99 disks with a mixture of Flash, SAS and NL-SAS.
When I try to expand it (using Unisphere) it will not allow me to expand by adding the disk below:
• 5 Flash (RAID 4+1)
• 15 SAS (RAID 4+1)
• NL –SAS (RAID 6+2)
Is there any limitations on expanding Storage Pools with this version of VNX?
Many Thanks
• 15 SAS (RAID 4+1) - RAID-5
• NL –SAS (RAID 6+2) - RAID-6
Not sure what EMC best-practice is but RAID-5 is not normally recommended for Business use anymore due to the extended rebuild times and the subsequent risk of a second disk failing before the rebuild completes - if this happens data is toast.
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