RAID problem...

[chuck77]

Hi all. I am currently using Proliant DL380 with Redhat 7.1.
Currently, this mail relaying is using RAID 1 mirroring between (2)9.1GB harddisk.

If i were to add a new 9.1GB harddisk, solely for upsizing the /home space.

Should i remain using the OS as RAID 1 and the new harddisk as RAID 0 for data ?

or reconfigure whole server as RAID 5 ?? and will i have to setup the whole server from scratch ?

 

[Evilbart]

raid 0 : no data protection (not good)
raid 5 : backup- restore server from backup (tape)
(backup server: braik raid 1, create raid 5, restore)

less config time: buy 2 disks and mirror them ;-)

sincerely
Bart

 

[chuck77]

i never do a full restore before.

Do i have to install the OS again and then
restore all the filesystem files from the
backup tape ??

 

[Evilbart]

euuuh,
this is the point where i'll have to point you to the linux (server) forum

cause I haven't done this on a linux system (I'm a microsoft orientated engineer)

on microsoft os's i perform a full backup, recreate a raid set (eg: raid 5) make the system partition (compaq smartstart does this all) partition , install a temp nt or a basic w2k and have my os restored from backup;

never had any problems following that procedure

I hope somebody will go deeper in the linux os based part of this procedure in the linux forum

hope this helped a bit

Bart

 

[jkallen]

No re-install needed (Linux or Microsoft) depending on the array controller you have. If your array controller has write-caching (and it not an older Smart-2) on it, you can boot off the SmartStart CD (use a 5.x version) and run the ACU to "migrate" your array from one type to another
(0->1 ; 1->5 ; 0->1, etc).

If you have an integrated or non-write controller, see if you can borrow a 3200 or higher from someone long enough to do the migration and then you can give it back to them and go back to your integrated controller.