How large of a ceph cluster are you planning on building, and what network cards/speeds will you be using? A lot of the talk about RAID HBA pass-through being sub-optimal probably won't be your bottleneck unless you're aiming for a large cluster at 100Gb/s speeds, in my opinion. On Fri, Jul 12, 2024 at 12:02 PM Drew Weaver <drew.weaver@xxxxxxxxxx> wrote: > Okay it seems like we don't really have a definitive answer on whether > it's OK to use a RAID controller or not and in what capacity. > > Passthrough meaning: > > Are you saying that it's OK to use a raid controller where the disks are > in non-RAID mode? > Are you saying that it's OK to use a raid controller where each disk is in > its own RAID-0 volume? > > I'm just trying to clarify a little bit. You can imagine that nobody wants > to be that user that does this against the documentation's guidelines and > then something goes terribly wrong. > > Thanks again, > -Drew > > > -----Original Message----- > From: Anthony D'Atri <aad@xxxxxxxxxxxxxx> > Sent: Thursday, July 11, 2024 7:24 PM > To: Drew Weaver <drew.weaver@xxxxxxxxxx> > Cc: John Jasen <jjasen@xxxxxxxxx>; ceph-users@xxxxxxx > Subject: Re: Repurposing some Dell R750s for Ceph > > > > > > > Isn’t the supported/recommended configuration to use an HBA if you have > to but never use a RAID controller? > > That may be something I added to the docs. My contempt for RAID HBAs > knows no bounds ;) > > Ceph doesn’t care. Passthrough should work fine, I’ve done that for tends > of thousands of OSDs, albeit on different LSI HBA SKUs. > > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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