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Re: mdraid on SSD - use scterc?

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On 06/16/18 22:22, Richard Hector wrote:
> I've got a new server with 2 mdraid RAID 1 arrays - one on spinning 
> disks, the other on SSDs. The spinners are set by default to use
> ERC; the SSDs are not, but appear to support it.
> 
> Should I enable it on the SSDs? 

Enabling SCT Error Recovery Control seems to be conventional and 
recommended for RAID, regardless of drive type (HDD or SSD) [1].  I have 
it enabled on the HDD's in my md array.


> Or are they not prone to failure in
> such a way that it would be useful?

On 06/17/18 05:42, Richard Hector wrote:
> INTEL SSDSC2KW256G8 (545s series)
That looks like a high-end consumer SSD [2].  I don't see anything 
obvious in the specifications summary that would preclude enabling SCT 
Error Recovery Control.


David


References:

[1] 
https://forums.freenas.org/index.php?threads/checking-for-tler-erc-etc-support-on-a-drive.27126/

[2] 
https://ark.intel.com/products/125020/Intel-SSD-545s-Series-256GB-2_5in-SATA-6Gbs-3D2-TLC

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Thread

mdraid on SSD - use scterc? Richard Hector <richard@walnut.gen.nz> - 2018-06-17 07:30 +0200
  Re: mdraid on SSD - use scterc? Henrique de Moraes Holschuh <hmh@debian.org> - 2018-06-17 14:40 +0200
    Re: mdraid on SSD - use scterc? Richard Hector <richard@walnut.gen.nz> - 2018-06-17 14:50 +0200
  Re: mdraid on SSD - use scterc? David Christensen <dpchrist@holgerdanske.com> - 2018-06-17 21:30 +0200

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