> > NVMe SSDs shouldn’t cost significantly more than SATA SSDs. Hint: certain > tier-one chassis manufacturers mark both the fsck up. You can get a better > warranty and pricing by buying drives from a VAR. > > We stopped buying “Vendor FW” drives a long time ago.
Groovy. Channel drives are IMHO a pain, though in the case of certain manufacturers it can be the only way to get firmware updates. Channel drives often only have a 3 year warranty, vs 5 for generic drives. > Although when the PowerEdge R750 originally came out they removed the ability > for the DRAC to monitor the endurance of the non-vendor SSDs to penalize us, > it took about 6 months or arguing to get them to put that back in. I've seen a bug on R440s with certain drives around this as well, where a drive was falsely reported as EOL. It's a much better idea to monitor yourself than to trust iDRAC or any other BMC to do this. > It’s a trap! Which is to say, that the $/GB really isn’t far away, and in > fact once you step back to TCO from the unit economics of the drive in > insolation, the HDDs often turn out to be *more* expensive. > > I suppose depending on what DWPD/endurance you are assuming on > the SSDs but also in my very specific case we have PBs of HDDs in inventory > so that costs us…no additional money. Fair enough ; my remarks naturally are with respect to net new acquisitions. OpEx of HDDs is still higher though. > My comment on there being more economical NVMe disks available was simply > that if we are all changing over to NVMe but we don’t right now need to be > able to move 7GB/s per drive It's not just about performance, it's about drives that will be available if any 5 years from now. > it would be cool to just stop buying anything with SATA in it and then just > change out the drives later. Which was kind of the vibe with SATA when SSDs > were first introduced. Everyone disagrees with me on this point but it > doesn’t really make sense that you have to choose between SATA or NVME on a > system with a backplane. There are "universal" backplanes that will accept both, but of course you pay more and still need an HBA, even if it's built into the motherboard. > > But yes I see all of your points as far as if I was trying to build a Ceph > cluster as primary storage and had a budget for this project. That would > indeed change everything about my algebra. > > Thanks for your time and consideration I appreciate it. > > _______________________________________________ > ceph-users mailing list -- ceph-users@ceph.io > To unsubscribe send an email to ceph-users-le...@ceph.io _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
