Re: 8203-E4A RAID5 vs. ASP protection

Yep, you’ll need to pull the drive(s) you do not want in the RAID set. Clearly that also means it can’t be part of the system ASP either.

We used to fight with that aspect of starting RAID all the time. When adding drives, we would add them two at a time so we could include them in the RAID.

Now with the later RAID cards and software updates we have significantly more flexibility.


Jim Oberholtzer
Agile Technology Architects

On Mar 2, 2024, at 8:22 AM, Patrik Schindler <poc@xxxxxxxxxx> wrote:

Hello Rob,

Am 01.03.2024 um 16:18 schrieb Rob Berendt <robertowenberendt@xxxxxxxxx>:

Isn't another option to IPL into DST, turn off RAID, then turn RAID back on
and just leave off the offending disk?

Tried this. Switching off parity took ages, to free up the parity space and add it to the ASP.

When switching parity back on, I have no choice to select which disks should be part of the parity set. Duh!

Okay, so I need to switch it off prior to when we're at the DC next time anyway to pull the disk in question and re-enable parity with the five remaining disks.

:wq! PoC

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