Adding third disk as a single disk in a server with an existing RAID1
- by slowhandsolo
I've got a ProLiant DL360 G5 server (Fedora 13) with two SAS disks in a hardware RAID 1, working fine.
Now I hot plugged another SAS disk. I'd like to configure this new hard disk out of my RAID, as a single non-RAID disk (ex. /dev/sdb).
Even after rebooting the server, I can't see the new disk with "fdisk -l". It displays only my hardware RAID, but not the new disk.
[root@myserver]# fdisk -l
Disco /dev/cciss/c0d0: 300.0 GB, 299966445568 bytes
Disposit. Inicio Comienzo Fin Bloques Id Sistema
/dev/cciss/c0d0p1 * 1 126 512000 83 Linux
/dev/cciss/c0d0p2 126 71798 292422656 8e Linux LVM
Disco /dev/dm-0: 234.9 GB, 234881024000 bytes
Disco /dev/dm-1: 10.5 GB, 10536091648 bytes
Disco /dev/dm-2: 21.0 GB, 20971520000 bytes
Disco /dev/dm-3: 31.5 GB, 31474057216 bytes
Disco /dev/dm-4: 1577 MB, 1577058304 bytes
However, I can see the new disk using the HP Array Configuration Utility CLI for Linux "hpacucli":
[root@myserver]# hpacucli
=> controller slot=0 physicaldrive all show status
physicaldrive 1I:1:1 (port 1I:box 1:bay 1, 300 GB): OK
physicaldrive 1I:1:2 (port 1I:box 1:bay 2, 300 GB): OK
physicaldrive 1I:1:3 (port 1I:box 1:bay 3, 300 GB): OK
=> controller slot=0 pd all show detail
Smart Array P400i in Slot 0 (Embedded)
array A
physicaldrive 1I:1:1
Port: 1I
Box: 1
Bay: 1
physicaldrive 1I:1:2
Port: 1I
Box: 1
Bay: 2
**unassigned**
physicaldrive 1I:1:3
Port: 1I
Box: 1
Bay: 3
Status: OK
Drive Type: **Unassigned Drive**
As you can see, I've got two SAS disks in a RAID 1 and the new disk as "unassigned". Is there any way to work with the new disk as another non-RAID single disk?
If relevant, I want to create a new partition in my new disk, format it with mkfs and mount it, but as I can't see it with fdisk, I don't know how to do it.
Thanks!
