On Wed, Dec 17, 2008 at 8:28 AM, David Lethe <david@xxxxxxxxxxxx> wrote: >> -----Original Message----- >> From: linux-raid-owner@xxxxxxxxxxxxxxx [mailto:linux-raid- >> owner@xxxxxxxxxxxxxxx] On Behalf Of Jon Nelson >> Sent: Wednesday, December 17, 2008 7:27 AM >> To: Redeeman >> Cc: Justin Piszcz; linux-raid@xxxxxxxxxxxxxxx >> Subject: Re: upgrade advice >> >> > What sort of volume of disks are you using, and what loads? (24/7 >> with >> > high load?) >> >> It's a home server. It's up 24/7. Load probably 80% of the time is >> low, the rest of the time it's bursty. >> > Read the specs on the disks. Most consumer class drives are rated for > only 2400 hours annual duty cycle ... so I guess you turn the computer > off in April? :) Yeah. Right. I typically get > 5 years out of the disks. I got almost 9 years once, before bad sectors started showing up. Actually, I've either gotten less than a week or more than 4 years out of every single drive I've ever had, except a really bad batch of seagates I got 8-10 years ago. The current temp of the drives varies between 28C and 33C (the Hitach is warmer by +4C than any other drive). > Other differences include number of ECC correction bits, so you will > absolutely get more grown bad blocks with cheap drives. That's good to know. > drives. No wonder several fail within days of each other, they all > have same model, I/O load, and generally same manufacturing batch. I never have more than 1 of the same manuf. / model in a raid at a time. I have a 3 drive raid10f2 with 3 different manuf. > If you are hell-bent on getting cheap drives, then at least factor in > cost of an additional drive so you can implement RAID6, and automate a > daemon to check/repair consistency often. I will likely move to raid6 eventually. Thanks for the advice. -- Jon -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
