How to know no. of HD

ust · 08-10-2012, 06:12 AM

I have a Redhat server have raid controller , I do not know what is the the raid setting ( eg. raid 1 , raid 5...) , the fdisk as shown below , how can I know how many HDD in it , the size , what is the raid setting ? thanks

/dev/cciss/c0d0p1
/dev/cciss/c0d0p2
"
"
/dev/cciss/c0d1p1
/dev/cciss/c0d1p2
"
"

bigrigdriver · 08-10-2012, 07:01 AM

c0 = contoller zero = first controller
d0 = device zero = first disk
p0 = partition zero = first partition

ust · 08-11-2012, 03:00 AM

that means it have 1 raid controller , 2 disk , each disk have 2 partition ?

if yes , I wonder that the server should have at least 3 disk

ust · 08-11-2012, 08:09 PM

the fdisk -l may be varied by the raid setting ? eg . if I use raid 5 , what I see from fdisk -l is different from raid 10 ?

thx

chrism01 · 08-12-2012, 04:36 PM

fdisk can only show you what the OS can see normally ie standalone disks and SW RAID
For HW raid, you'll need eg hpacucli from the HP Product Support Pack ie you need a tool from the HW-RAID manufacturer.

ust · 08-16-2012, 03:07 AM

Quote:

Originally Posted by chrism01

fdisk can only show you what the OS can see normally ie standalone disks and SW RAID
For HW raid, you'll need eg hpacucli from the HP Product Support Pack ie you need a tool from the HW-RAID manufacturer.

that means I can't know no. of HDD in my server only if I install the tool eg. hpacucli ?

thx

techguru666 · 08-24-2012, 11:41 AM

use fdisk command

szboardstretcher · 08-24-2012, 12:16 PM

reboot and go into the raid controller?