Derek Ragona wrote:
Mirroring offers redundancy but uses twice the disk space, AND is slower
than striping.
Actually, disk Reads of a stripe and a mirror are the same. Writes are same speed as a single disk
(half the speed of a two disk stripe).
If you use something like gmirror and set th
At 02:57 AM 6/28/2008, prad wrote:
our dual pentium3 1GHz with 2G ram and 8 18G scsi drives (server holds
4) should be arriving in about 1 week. my son and i want to this up as
proper server rather than as a desktopish installation being used as a
server. it will serve primarily websites (static
prad wrote:
why in diagram 20-3 of the handbook do they show 2 parity blocks though
for disk3 and disk4? why would you ever have more than 1 for any single
disk?
The diagram shows a RAID5 made out of a number of disk stripes spread
across 4 physical drives. It's the /stripes/ that are the bas
On Sat, 28 Jun 2008 13:02:20 +0200
Pieter de Goeje <[EMAIL PROTECTED]> wrote:
> Parity is calculated using the following formula:
>
pieter, that is absolutely beautiful!!
it was really bothering me how you can recover data that really wasn't
'there'.
my son and i just worked out the mechanism wi
On Saturday 28 June 2008, prad wrote:
> 3. it seems that geom just does striping and mirroring, but vinum
> offers more configurability and is really the preferred choice?
Geom also does raid 3 and disk concatenation (JBOD) (see the geom(8) manpage).
I think geom is preferred because it is better
prad wrote:
4.1 with 4 18G drives one thought is to do a raid1, but we really
don't want 3 identical copies. is the only way to have 2 36G mirrors,
by using raid0+1 or raid1+0?
raid10 strongly preferred -- ie. you make a series of raid1 pairs and
then stripe across them. This is high perform
our dual pentium3 1GHz with 2G ram and 8 18G scsi drives (server holds
4) should be arriving in about 1 week. my son and i want to this up as
proper server rather than as a desktopish installation being used as a
server. it will serve primarily websites (static html) and email for
virtual domains a