On Tue, 3 Apr 2001 at 08:06, Brian Baquiran wrote:
> No, no, no! You want RAID 0 (striping) on *top of* RAID 1 (mirroring),
> not the other way around. I've always thought it was obvious but I've
> already had to correct and explain the difference to several vendors
> trying to sell us their products.
The whole brouhaha of RAID 10 vs RAID 0+1 isn't really noticeable
especially since (as the Server/Workstation Expert magazine column said) a
number of manufacturers don't know the difference and use these
interchangeably. The "RAID is in the Details" article was a real
eye-opener. It's interesting how there's a humongous difference between
RAID 0+1 (ie: what Promise uses) and RAID 10 (which 3Ware claims they
use).
After reading that article from SW Expert, I'm looking at implementing
RAID 10. RAID 5 doesn't look very attractive considering I'm only dealing
with four disks.
> Theoretically, yes. It depends on your applications and how you lay
> out your data.
Would you have any heads up tips as far as how I fix my data layout to
optimize a 2(1+1)R10 <wink> setup? I'm planning to put my entire
installation in the array (versus having only data in the array and other
parts in a separate disk using the mobo's built-in controller), will how I
partition the "disk" affect performance? Or should the controller handle
this nicely? (I'm obviously new to RAID, please be patient.) :)
> What's your budget? I'd suggest you take a look at Compaq and IBM's
> Intel servers.
Not so high, which is why I'm building a setup myself. Most of the branded
server setups I've seen use SCSI which is an arm and a leg more expensive
than UltraATA (although for good reason). We have opted to build ourselves
a unit, which is why my father already bought the 3Ware controller in Hong
Kong. Now all I have to piece together is the rest of the system.
--> Jijo
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