[nycbug-talk] Memory sizing

[Pete Wright]

On Tue, Apr 25, 2006 at 11:12:27AM -0400, Francisco Reyes wrote:
> Pete Wright writes:
> 
> >SATA drives are pretty good, we use them for some things although for
> >something as critical as a database i would not trust them especially if
> >you expecting to have frequent/large disk IO happening.
> 
> They are not too bad on RAID 10.
> 

you can get decent performance, but i would day they are much less
reliable than SCSI disks.  esp. in a DB environment where you are going
to have alot of random seeks, read's and writes.  we get decent
throughput on long streaming I/O though...

> >looked at using graid3(8)?  this will help maximize space and speed of
> >your disks while providing some redundancy via a parity device. 
> 
> But isn't that software raid? At least that what it seems (just did man 
> graid3). We always do hardware raid.

yep sure is, although you can implement such a scheme with a decent
hardware controller...

-p


-- 
~~oO00Oo~~
Peter Wright
pete at nomadlogic.org
www.nomadlogic.org/~pete
310.869.9459