On Mon, 9 Aug 2004, Paul Gear wrote:
> Joey Hess wrote:
..
> > - software RAID support
>
> But not on /boot or /. I find this just unfathomable. What do i do if
> the disk containing / dies?
if raid is configured properly ... it will still boot ...
if / is on /dev/hda and /dev/hdc ... and one of the disk dies
- yow will still be able to boot
if / is on /dev/hda and /dev/hdc and /dev/hde ... and 2 of the disks dies,
- you will still be able to boot
if you have 4 disks ... you will always be able to boot 99.99% of the time
without touching the keyboard
/dev/md0 == /dev/hda + /dev/hdd in raid1 mirror
/dev/md1 == /dev/hdb + /dev/hdc in raid1 mirror
/dev/md0 and /dev/md1 is stripped ( raid0 ) for faster reading
( but not all systems support it properly - bios and raid config
problem )
data ( /home ) should always be raid5 across those 4 disks
or raid1 .. mirror ... or whatever you want
==
== the whole point of raid ... it will boot no matter what ... if you
== configured it properly...
== we'll exclude silly things like a power supply blowing up
== or cpu temp rising and rising and rising and crashing randomly
== due to poor fans and air circulation preventing raid from doing
== its job
==
c ya
alvin
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