Replacing a failed drive in NAS

a google for "backblaze" will take you to a very interesting site. They run nearly seventy thousand discs

Their failure rate statistics are interesting, with two models suffering over 10% failure rate. 

Guy007 posted:

jon honeyball posted:

I have had 6 drives fail in the last 6 months. But then I have got over 300Tb of storage.

Were they all the same disk make / size that failed ? What % of your total drive count were they ? How long had they been running before failure ? What RAID setup do you use ? Which NAS shell/s ?

Thanks in advance :-)

no

about 20%

between a week and 4 months

various -- synology raid5 with hot standby, thunderbolt arrays etc

jon honeyball posted:

no

about 20%

between a week and 4 months

various -- synology raid5 with hot standby, thunderbolt arrays etc

Thanks Jon, which are the drives you are using that have failed ?  Talk about failing fast though... maybe a bad batch ?

Various but Most are wd red and purple I think 

Peter Dinh posted:

Guy007 posted:

jon honeyball posted:

I have had 6 drives fail in the last 6 months. But then I have got over 300Tb of storage.

Were they all the same disk make / size that failed ? What % of your total drive count were they ? How long had they been running before failure ? What RAID setup do you use ? Which NAS shell/s ?

Thanks in advance :-)

Yes, this is really an exception. I have never had a hard drive that fails me and this is going back to late 80's.

I hope you had your fingers crossed when you typed this! There are only three things certain in this life - you're born. You die. And your hard drives will fail.

Yep, I will be waiting for one of these 2 things to happen, not sure which one will come sooner.

tonym posted:

Peter Dinh posted:

Guy007 posted:

jon honeyball posted:

I have had 6 drives fail in the last 6 months. But then I have got over 300Tb of storage.

Were they all the same disk make / size that failed ? What % of your total drive count were they ? How long had they been running before failure ? What RAID setup do you use ? Which NAS shell/s ?

Thanks in advance :-)

Yes, this is really an exception. I have never had a hard drive that fails me and this is going back to late 80's.

I hope you had your fingers crossed when you typed this! There are only three things certain in this life - you're born. You die. And your hard drives will fail.

Actually, I bought my first PC in around 1984/85, and have bought and built many computers for myself since then and for one or two others in my family. In all that time, I can't recall a single hard drive (complete) failure. I have had a couple of instances where system files became corrupted and my only recourse was a re-format, and quite a few instances of the odd bad sector (particularly in the early days), but not a completely irrecoverable hard drive failure.

I just find it absolutely amazing that mechanical hard drives which by their very nature ought to be incredibly fragile, are actually incredibly robust.

I guess I have been very lucky, and all my fingers and toes are crossed as I write this post.    

I've replaced the dodgy drive with a brand new one and everything seems to be well with the NAS.  What they don't tell you is that the last half millimeter of travel for the disc tray is the difference between "Disc does nor exist" and success.  

Another thing they don't tell you is "core comes with two packets of screws. One labelled hdd. One labelled ssd. Do not assume that there was one packet and then wonder why the hdd screws don't fit in your very expensive ssd"

look it had been a long day ok?

jon honeyball posted:

Another thing they don't tell you is "core comes with two packets of screws. One labelled hdd. One labelled ssd. Do not assume that there was one packet and then wonder why the hdd screws don't fit in your very expensive ssd"

look it had been a long day ok?

Sorry, but that's an RTFM! Page one of the quick start guide.