On Wed, 2020-11-11 at 16:38 -0700, Warren Young wrote: > On Nov 11, 2020, at 2:01 PM, hw <[email protected]> wrote: > > I have yet to see software RAID that doesn't kill the performance. > > When was the last time you tried it?
I'm currently using it, and the performance sucks. Perhaps it's not the software itself or the CPU but the on-board controllers or other components being incable handling multiple disks in a software raid. That's something I can't verify. > Why would you expect that a modern 8-core Intel CPU would impede I/O in any > measureable way as compared to the outdated single-core 32-bit RISC CPU > typically found on hardware RAID cards? These are the same CPUs, mind, that > regularly crunch through TLS 1.3 on line-rate fiber Ethernet links, a much > tougher task than mediating spinning disk I/O. It doesn't matter what I expect. > > And where > > do you get cost-efficient cards that can do JBOD? > > $69, 8 SATA/SAS ports: https://www.newegg.com/p/0ZK-08UH-0GWZ1 That says it's for HP. So will you still get firmware updates once the warranty is expired? Does it exclusively work with HP hardware? And are these good? > Search for “LSI JBOD” for tons more options. You may have to fiddle with the > firmware to get it to stop trying to do clever RAID stuff, which lets you do > smart RAID stuff like ZFS instead. > > > What has HP been thinking? > > That the hardware vs software RAID argument is over in 2020. > Do you have a reference for that, like a final statement from HP? Did they stop developing RAID controllers, or do they ship their servers now without them and tell customers to use btrfs or mdraid? _______________________________________________ CentOS mailing list [email protected] https://lists.centos.org/mailman/listinfo/centos
