RAID 0 is Data Stripping, splits it across two drives and makes read times faster.
RAID 1 is Data Mirroring, makes a backup of one drive onto the other.
Both above require two drives, as you probably know.
RAID 0+1 is both. Requires four HDD's.
hellokitty[hk] said:
Ok ok just one actually two more questions, then we can be done with this post:
How long is a standard 7200rpm hdd expected to last and is there a difference between 7200, 5200, and 10000?
That's like saying, how long is a piece of string? It could be any legnth. You cannot predict how long it will last. It could last a day, a month, a year, etc. Generally, you can expect them to last quite a long while (year/s), but no one can tell you a digit as to what to expact.
I have two Western Digital 150GB X Raptor's in RAID 0, with a Seagate Barracuda 500GB as my storage. The last time I had two Seagate in RAID 0, one of the HDD failed within a week. WD is doing fine, how ever.
The higher the RPM, the faster the read time. That's the only difference.
Either buy a 10,000 RPM HDD or don't, it's not a life changing decision. =P It'll give you a slight performance boost, but nothing incredibly significant unless you put them into RAID 0.