Grant wrote:
I'm about to buy a couple Samsung Spinpoint F1 hard drives and I was
planning on setting them up in a RAID0 array. Everyone seems to love
RAID1 though, and I'm a little confused as to why. Don't daily
backups secure 99% of the data that RAID1 does? They even protect in
the event of theft or fire which RAID1 doesn't.
If one hard drive dies in a RAID1 array, does the system keep running?
If so, that's good, but there are so many other components that could
die. In 15 years I've lost the power supply, video card, modem,
motherboard, and CPU, but never a hard drive. With all these
potential points of failure, how much greater system reliability do
mirrored hard drives really offer?
In fifteen years I've lost roughly fifteen hard drives and one power
supply. Hard drives have moving parts and that equals failures.
Congratulations on being lucky, though you have wonder why so many thing
that don't normally have issues are having issues in your system. :-)
Do I back my stuff up? Yes. Do I also run RAID1? Yes. Why? Because
having to go dig you backup out is really time consuming whereas
ordering a new hard drive and plugging it in requires next to no work.
In almost all cases I can think of your RAID1 system will continue to
keep running with the lost of a single disk. Also RAID1 acts like RAID0
when you're reading from it so there is a performance increase on reads.
kashani
