spare granite
Is there an easy way to tell, before installing a drive, whether it's capable of DA in a FAS system? We have a customer with an X377A showing 'no' for DA capable, but I can't work out whether it means the drive is incapable of supporting DA, or whether the feature is just disabled. The snippet from the manual, which i'm now realizing is a SANtricity manual (Is DA a thing in ONTAP?) is attached. I think it could be re-worded for clarity.
alpine siren
where exactly do you see the "no" for data assurance? HWU doesn't show this for ONTAP drives, only for E-Series drives. And X377A is an ONTAP drive...
spare granite
does ontap support DA? That would answer the entire issue. one of our sales guys went rogue apparently lol
violet quail
DA is Eseries only AFAIK.
spare granite
I'm probably playing the telephone game a bit, customer emailed and said the drive we sold is incapable of DA
spare granite
DA is Eseries only AFAIK.
excellent. We'll run with that, thanks!
alpine siren
yeah, ONTAP uses the T10 DIF fields internally but not for T10 PI (aka DA)
so no, T10 PI is an E-Series only thing
but I'd still like to know where it says that this drive doesn't do DA since I'm pretty sure technically it could 🙂
spare granite
yeah I've asked for logs, probably won't ever see em
alpine siren
my guess is your customer uses that drive in a different system 🙂 if so he could probably reformat it with T10 PI (for example in Linux) but unless the rest of the system also checks and maintains Data Assurance, it won't help him much
spare granite
I remember running into a T10PI issue with an old IBM SAN once, they sold the same FRU where some disks were T10PI enabled, and others were incapable. Was fun
Netapp does it better
spare granite
yep, confirmed they're running an E5700
alpine siren
yeah, so wrong drive 👍
odd star
Ouch, X377 is a large ssd isn’t it?