On 29/06/11 20:53, Wayne Stallwood wrote:
Were you considering RAID 0 or RAID 1 here ?
RAID1
I'd say there is almost no contest there. Unless we are talking Enterprise quality SAS RAID on large arrays then there is little reason to bother with hardware assisted RAID. Particularly when we are talking about just 2 drives.
You're not one to sit on the fence are you, Wayne? :-)
For some chipsets there are linux management tools but you still generally get worse performance than md arrays are capable of on decent hardware. Also you are bound to your hardware so if say the mainboard of your server fails then you aren't going to be able to mount the disks until you source another with the same chipset *
This has been my argument in the past so I'm glad it's backed up by someone more knowledgeable!
Assuming that you have somewhere to store the data whilst you are repartitioning then I'd say very high.
I was thinking of the second disk :-)
At the moment I'm using the "hardware" RAID. I should be able to remove one disk from the array and still boot from the other, then create a new degraded md array with the second disk, copy everything across, boot from the md array, add the second first disk to the array.
That sounds fine in theory but there are several stumbling blocks in practice due to my lack of knowledge, which lead me towards a fresh install, which isn't a great way to learn! (At present there's very little on the box other than a fresh install so if wiping it is the way to go that's what I'll do.)