Am 03.12.22 um 19:04 schrieb David T-G:
% But if all your drives are the same make, model(, and batch), there is a not
% insignificant risk they will all share the same defects, and fail at the
% same time. It's accepted the risk is small, but it's there.
What is the problem? Is it the manufacturer's firmware? Is it the day
they were made?
you simply don't know until the problem hits you
not so long ago some HP enterprise SSDs for example had a timebomb in
their firmware by some 32bit counter (power on i think) which killed the
complete device when not fixed with a firmware update - when that
happens and all your drives are the same type and bougzt at the same day
your RAID is gone forever
it's simply common sense that two drives with different ages and from
different vendos are unlikely failaing within a few hours for the same
reason
on a 4 disk RAID10 i prefer 2 different disk series with a different age
by at least one month whenever possible
