On Feb 23, 2010, at 1:40 PM, carmo...@aol.com wrote:
Hi All
I have a PM G5 2.7 DUAL and I'm installing a Jive 5 unit and a
Seritek card to allow 5 2TB drives internally.
I need some expert advise on how and what type of Raid system I
need to store and quickly access a large music and movie library?
At the moment I have it stored on 3 machines via 1000 Ethernet and
Firewire externals.
I want it all in one central machine, the one that does all the
ripping. The transfer rates from one drive to another is real slow
compared to internal drives in one box.
John Carmonne
Yorba Linda
USA
How good are your backups??
The trade off in raid is speed vs reliability. The more speed you go
for, the higher likelihood is for catastrophic data loss.
Basically, the fastest is striping the drives into one large virtual
drive, RAID 0. However if 1 drive fails or becomes corrupted, ALL
data is lost.
For Data security at the cost of speed is RAID 5 across 3 disks.
There is a parity bit so that if one drive fails, you still can
recover the data by replacing the failed drive. Slower than RAID 0,
but your data is secure.
So instead of the normal pick 2 out of 3 in engineering (better,
faster, cheaper) you have to pick between speed or safety.
Len
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