Hi I just wanna disable the default RAID in my server IBM System X3400 M2 Server(7837-24X),i have 3 disk drives SAS.
I want to make them a JBOD "Just a Bunch Of Disks", because I want to install in the drive 0 CentOS, and the other two make them cache files for a squid server.
I disable the RAID in the BIOS:
System Settings/Adapters and UEFI drivers/LSI Logic Fusion MPT SAS Driver
-PciRoot(0x0)/Pci(0x3,0X0)/Pci(0x0,0x0)
LSI Logic MPT Setup Utility
RAID Properties/Delete Array
Later I boot the CentOS live CD and install the OS in the drive 0, and the others 2 mounted like this:
*LVM Volume Groups
vg_proxyserver 139508
lv_root 51200 / ext4
lv_home 84276 /home ext4
lv_swap 4032
Hard Drive
sdb(/dev/sdb)
free 140011
sdc(/dev/sdc)
free 140011
sdd(/dev/sdd)
sdd1 500 /boot ext4
sdd2 139512 vg_proxyserver physical volume(LVM)
But when I restart the server give me the error:
Boot failed Hard Disk 0
UEFI PXE PciRoot(0x0)/Pci(0x1,0X0)/Pci(0x0,0x0)/MAC(001A64B15130,0X0))
........PXE-E18:Server response timeout.
UEFI PXE PciRoot(0x0)/Pci(0x1,0X0)/Pci(0x0,0x0)/MAC(001A64B15132,0X0))
........PXE-E18:Server response timeout.
and the OS not start. The IBM force me to do a RAID?,why?
Best Answer
Why not use a Raid 10 or 5? I am assuming that you have a 4 drive chassis. It's easy to make separate partition for Squid file to reside. Just do a custom partition setup in the Cent installer. Performance will be better and you will eliminate a single point of failure setup using single drives.