First time setting up RAID, need help pls !

[Jaynos]

Posting this on behalf of a friend:

I have a Dell R520 server with 7 disks installed.

1 Disk for the Operating System (Cent OS)
6 Disks for Storage

What i want to do is have it setup like the below diagram, i.e. 3 Virtual Disks (1&2, 3&4, 5&6 paired etc)

To do this I'm using RAID 1, is this the correct RAID config to use ?

The reason i ask is that using Dells Lifecycle controller i can only seem to setup 1 Virtual Disk at one time. If i create one Virtual Disk which pairs disks 1&2 and then afterwards try and create another one which pairs 3&4 the previous Virtual Disk (1&2) is removed.

Anyone clued up as to what I'm doing wrong ?

 

[ginjaninja]

raid 1 ..would be mirrored (data redundancy)
raid 0....would be striped..more chance of data loss and at least 2x the performance

not familiar with this raid controller, but any controller should be able to create 3 arrays...
probably user errror/rtm
maybe the ui is just showing that 1/2 are no longer available for raid designation..but they have actually been configured..

 

[Raggy]

Surely the sensible option would to RAID 1 mirror OS disks and the remaining 5 disks in RAID 5. CentOS will then allow you to create whatever volumes / disk you need.

 

[Ricimer]

Ctrl-R at the Perc section during post, assuming you got a proper RAID controller (an H300/700) not an "S"