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On 28/01/10 12:40, Gordon Henderson wrote: > On Thu, 28 Jan 2010, Rob Beard wrote: > >> Quoting Gordon Henderson <gordon+dcglug@xxxxxxxxxx>: >> >>> Had a server creak and groan overnight with disk failures of both >>> drives (mirrored) I'd like to say something like: "What's the chances >>> of that happening", unfortunately, it's not the first time as I had a >>> server some 3 years back which lost 3 out of it's 6 drives in an >>> 18-hour period. >>> >>> All 5 drives are/were WDC drives too. >>> >>> Oh well - looks like this one will limp along until I can replace them >>> in a few days time. (well - badblocks scans of the partitions that are >>> live was OK) >> >> Ahh not good. >> >>> It's only 8 months old too. Ho hum! >>> >>> Anyone got any recomendations for good reliable SATA disks in the >>> 500-700GB size range? >>> >> >> I have a couple of Seagate 500GB drives in an USB external case and a >> Seagate 750GB drive in my server which run 24/7, they're getting on >> nearly 3 years old now and they are still working fine. I've not had >> any problems with Maxtor drives either (although saying that Maxtor >> drives now are pretty much rebadged Seagate drives). > > I've had both Seagate and Maxtors fail on me in the past - but saying > that, I've still got some Maxtors whirring away quite hapilly... > > I suspect it's a bit of a gamble these days unless you pay top whack for > the expensive ones with long warrantys. > > These ones that are failling are 640GB WDC "Caviar Blue" disks. Bloody > fast for the price, but maybe just not up to the job. (And yes, the > client was on a budget - with the emphasis on speed) > >> Can't really vouch for Hitachi drives, although I've not personally >> had a problem with any of my Hitachi drives, they aren't running 24/7 >> (they're in the wife's PC) and I have seen other Hitachi drives fail >> after about 18 months. Also had no luck with Samsung drives, I've had >> 3 identical 160GB drives all fail within 12 months with the same >> problem, and these were bought at different times. > > It doesn't bode well for low-end servers running 24x7. This is in an air > conditioned server room too - all fans going OK, disk temperatures > stable, etc. > > Maybe there's a case for drives from different manufacturers in the same > server now... Anyone do this as a matter of course? > > Gordon > As in all machinery (specifically rotating equipment) always ensure usage is staggered, i.e not sequential batch, not sequential manufacturers and do not install both discs as new at at same time, always change one after say 6 months so mean time between failures for the two or more discs is not likely [ never guaranteed] to have been generated by same manufacturing process at the same time. P.S. I use alot of rotating equipment (pumps, compressors) on explosive mixtures so failure in service is the top criteria and we never buy a complete set for any one critical service from any one manufacturer or manufacturing site ( i.e not 'same' as in re-badged or manufactured by sub-contract at same OEM supplier). Same principle applies to hard discs , it is the mechanics that usually fail. -- Regards Eion MacDonald -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html