--On Mittwoch, 27. Oktober 2004 15:12 Uhr -0700 Julian Elischer <julian_at_elischer.org> wrote: > Andreas Braukmann wrote: >> --On Mittwoch, 27. Oktober 2004 13:00 Uhr -0700 Julian Elischer >> <julian_at_elischer.org> wrote: >> >> twe(4) and a bunch of big S-ATA drives in RAID-5 configuration. >> Nothing really impressive nowadays. Sorry, for the new boxes I've meant twa(4), of course. Sorry for this very misleading information. > I'm having infrequent corruption problems with 3ware 7500-8 cards . hmmm. 7500. The 72xx and 7500 series didn't fulfill my expectations concerning RAID-5 performance. I employed them only in RAID 10 confi- gurations. The 7506 series was (IMHO) the first 3Ware device delive- ring a usable RAID-5 implementation. > do you check your data? yes, regularly. > We store GB sized files and we checksum them and we check the checksums over time.... > Over 7 servers we see a couple of file drop chunks of data over a weeks worth > of writing.. either 128KB chunks are not written or the chunk corresponding to > 1 drive's part of a 128KB write never happens. Some of them are defintly firmware > problems but some of them might be driver or OS problems too (or firmware). I can't reproduce this on 7506-8 / RAID-5 / 64 kB stripe size. Just don't bother with non default stripe size on the 3Ware's; the per- formance will suck and its prone to obscure (read: not so widely ex- posed) firmware bugs. > This is with 4.8 + the driver from their website.. and the driver from 4.10 stock twe(4) from RELENG_4 (shortly after 4.8 or 4.10) and 5.1-current (end of september 2003). -AndreasReceived on Thu Oct 28 2004 - 04:19:37 UTC
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