None of that matters. All of the issues you are concerned about have no bearing on your configuration.
The H710P doesn't pass through TRIM/UNMAP commands from the OS
TRIM is not really needed since the RAID controller has some method to let the drive know that the block is unused
When you use a hardware RAID controller the operating system has no control over the blocks. Any blocks the operating system thinks it is controlling are virtual, so any TRIM/UMAP the OS is doing is against virtual blocks.
A small percentage of the SSD (~5%) should be left unused. I believe this is called over provisioning.
Over provisioning happens at a drive level. The SSD manufacturers allocate space for this. If you want to do additional provisioning then some drive manufacturers provide utilities to allow you to manipulate the provisioning, or you can just have unallocated space on the drive. Any unallocated space will automatically be used by the drive, but I don't see a need for this since SSDs are already over provisioned by the manufacturers.
Daniel My
10 Elder
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6.2K Posts
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September 4th, 2015 11:00
Hello
None of that matters. All of the issues you are concerned about have no bearing on your configuration.
When you use a hardware RAID controller the operating system has no control over the blocks. Any blocks the operating system thinks it is controlling are virtual, so any TRIM/UMAP the OS is doing is against virtual blocks.
Over provisioning happens at a drive level. The SSD manufacturers allocate space for this. If you want to do additional provisioning then some drive manufacturers provide utilities to allow you to manipulate the provisioning, or you can just have unallocated space on the drive. Any unallocated space will automatically be used by the drive, but I don't see a need for this since SSDs are already over provisioned by the manufacturers.
Thanks
jfly
1 Rookie
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11 Posts
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September 5th, 2015 05:00
Thanks for the explanation Daniel.