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...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 Why would you expect that a modern 8-core Intel CPU would impede I/O in any measureable way as compared to the outdated single-core 32-bit RISC CPU typically found on hardware RAID cards?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 sam...

...#39;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 any measureable way as compared to the outdated single-core 32-bit RISC > > > CP...

...t 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 any measureable way as compared to the outdated single-core 32-bit RISC 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...

...something entirely different like LVM or MD RAID, etc. For that matter, I don?t even see that you?ve identified whether this is CentOS 6, 7 or 8. (I hope it isn't older!) > 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. Sure you can. Benchmark RAID-0 vs RAID-1 in 2, 4, and 8 disk arrays. In a 2-disk array, a proper software RAID system should give 2x a single disk?s performance for both read and write in RAID-0, but sing...

On Wed, 2020-11-11 at 11:34 +0100, Thomas Bendler wrote: > Am Mi., 11. Nov. 2020 um 07:28 Uhr schrieb hw <hw at gc-24.de>: > > > [...] > > With this experience, these controllers are now deprecated. RAID > > controllers > > that can't rebuild an array after a disk has failed and has been replaced > > are virtually useless. > > [...] > >