How to know no. of HD
 

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
"
"

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

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

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

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

use fdisk command

reboot and go into the raid controller?