On Sun, 16 Jun 2019 07:36:18 +0100 Terry Coles <d-...@hadrian-way.co.uk> wrote:
> On Saturday, 15 June 2019 21:19:17 BST Hamish MB wrote: > > I have been running badblock's read-only test on the other bad drive > > (currently in the NAS) today. There have been a total of 292 bad sectors > > thus far - I don't trust this drive not to randomly fail/degrade rapidly. > > That's less than the one I have here, but still not good. > > > If gsmartctl is right, the drive has been powered on for a total of > > around 7 years! Does this sound reasonable, Terry? > > I just checked and yes it is probably right, Those discs were originally > bought when I purchased my Netgear Stora in October 2011. Being a NAS, the > Stora was never powered down so they would have continued non-stop until the > Stora was zapped by a lightning strike (it didn't' actually hit the Stora you > understand). > > I then purchased the D-Link Sharecenter in September 2016 and transferred the > discs from the Stora. I retired the D-Link in February last year because the > D-Link support was poor (very few updates) and the discs were full anyway. > > The replacement was a Netgear ReadyNAS with 2 TB discs, so no transfer needed. > > So those discs would have run pretty much continuously from October 2011 to > Feb 2018 - getting on for 7 years anyway. > > This raises the spectre of the age of the (so far) good drive. If it's as > old > as the bad one, we may end up with the same problem quite soon. > > > Either way, we could try rescuing these drives with the destructive (or > > non-destructive) read-write options for badblocks, but I think it > > probably makes more sense to get a new 1 TB drive. I doubt they're too > > expensive, seeing as 1TB isn't huge these days. > > They start at around £25 for an unheard of brand on Amazon. Brands such as > Seagate or Western Digital start at around £35. The problem is, if the > second > drive is aging too, we might need to replace both. > > One solution is to populate the drive with two smaller drives; say 500 GB. > They start at around £20 each. I think that we need to discuss this at the > WMT before we go too far spending their money. > > > This is especially a good idea, because any custom programs/software we > > build/compile for this may have to be on the HDDs - the NAND storage is > > tiny and writing to it probably means re-flashing it. There is a > > serial/debug port on the PCB to which we can solder pins to unbrick it > > if we have to, but this may be an avenue best avoided. Also, the NAND is > > only 128MB - probably not enough to add anything useful. > > See above. > > > As for how well it handles damaged drives, the RAID re-sync failed > > (without any error!) after I removed and reinserted the bad drive. The > > current state of the array is "degraded" - we probably need a good > > drive/to fix one of these before we use it. > > See above. I think we may need at least one new drive if we are going to > continue with this idea. > Hi Terry, if you want a pair of 500gb drive I have a pair of Western Digital green sata you can have? Tim H -- Next meeting: BEC, Bournemouth, Tuesday, 2019-07-02 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk/ New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
