On 03/06/2016 07:52 PM, Ram Ramesh wrote: > On 03/06/2016 06:29 PM, Phil Turmel wrote: >> On 03/05/2016 03:49 PM, Ram Ramesh wrote: >>> I am curious if people actually replace hard drives periodically because >>> they are old or out of warranty. My 5 device raid6 has several older >>> drives (3/5 are 3+ years old and out of warranty) They seem fine with >>> SMART and raid scrubs. However, it makes me wonder when they will die. >>> What is the best policy in such situations? More importantly, do people >>> wait for disks to die and then replace or have some ad hoc schedule of >>> replacing (like every 6mo replace oldest) to keep things safe? >> I replace drives when their relocation count hits double digits. In my >> limited sample, that's typically after 40,000 hours. >> >> Phil > > Thanks for the data point. 40K hours means roughly 4.5 years with 24/7. > That is very good. You use enterprise drives? Mine are desktop (and may > be one HGST NAS) I moved from desktop drives to NAS drives about 4 years ago. So the 40k+ hours were on desktop drives. (A couple started dying in the mid 30,000's, but I suspect I overheated those two.) The oldest NAS drives I have now are approaching 40k, and are all still @ zero relocations. WD Reds, fwiw. > My SMART is perfect except for power on hours. I am going to take it > easy for now as I have a spare (not part of a RAID) just in case > something bad happens. Yes, sounds reasonable. Phil -- 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
