Sorry for being a noob but got a RAID question

AFK_Matrix · 15 Feb 2007 at 02:08

Ok if i add another 74gb Raptor to my one and use RAID 0 does that mean that I will get 150gb (roughly) of space to install stuff on?

binaryknight · 15 Feb 2007 at 02:40

depends on the raid type you use

raid 0 will give you the best performance and 148GB of space (before losses due to the filesystem etc)

jbod will do the same thing only offers no performance increase

raid 1 will only give you the 74GB but offers data protection in the form of redundancy, the second disk is used as a mirror of the first

before you go down the raid 0 route beaware that if one disk fails you loose all the data across both drives!

AFK_Matrix · 15 Feb 2007 at 03:24

Thanks binaryknight. Thats what I thought and yeah I knew that RAID 0 means if one disk goes i loose everything on both disks but i have that risk now with one raptor. But I have an external drive plus a 320gb drive with all my programs etc backed up so its cool.

rpstewart · 15 Feb 2007 at 08:44

Remember if you want to go with RAID you'll need to reinstall everything because the array creation process will wipe both drives.

fumbles · 15 Feb 2007 at 08:57

If you don't care about the performance, JBOD is another way to combine two hdds. Plus if one dies you only loose half of your stuff!

rpstewart · 15 Feb 2007 at 09:11

I don't see the point in JBOD really, it offers no advantages over two (or more) individual drives. You gain space in a partition but you lose the ability to control which spindles are doing the work so you can't distribute the I/O across the disks.

fumbles · 15 Feb 2007 at 10:11

rpstewart said:
I don't see the point in JBOD really, it offers no advantages over two (or more) individual drives. You gain space in a partition but you lose the ability to control which spindles are doing the work so you can't distribute the I/O across the disks.

Yeah it is rather pointless, but I guess people who don't want to have different drive letters for each hdd and do not know or how to use Junction Points or how to mount a volume in a folder.

AFK_Matrix · 15 Feb 2007 at 12:03

Thanks for all the advise. And yeah I know i will have to wipe all the data on my existing raptor but thats fine as I am getting a new mobo so i can go Conroe so was gonna wipe everything for that anyway. Main thing I need is space on the hdd as I would like to install every game i havn't played yet and thats a lot lol.

matja · 15 Feb 2007 at 12:23

JBOD is typically used for storage scenarios where you might frequently add hard disks and extend the contained filesystem over the new disks, via your favorite logical volume manager. This is done very quickly and easily, unlike growing a RAID-0 array.