[Discuss] NAS: lots of bays vs. lots of boxes

[Kent Borg]

On 07/10/2015 02:23 PM, John Abreau wrote:
> Based on the statistics they gathered, they recommended a policy of
> replacing drives every three years regardless of whether they're failing
> yet.

Consider staggering your replacement schedule for disks in a raid set so 
that they are out of sync and so not likely to die in quick succession.

So in a raid 1 pair, replace alternate disks every 18-months, even if 
that means replacing the first disk early.

But like many nice ideas, this one only goes so far: after a few cycles 
you can't get matched replacement disks and a bit later technology 
likely changes enough you need to rethink everything.

-kb