Linux - HardwareThis forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?
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I've only done raid 5 once, but shouldn't a raid drive be /dev/md0. What you posted looks like the second SCSI drive connected to your machine instead of a raid array. Now, I think you can define what you want the array called, and if that is true then you could have defined sdb in the /etc/raidtab.
[root@neptune root]# mkfs -t ext2 /dev/hdb
mke2fs 1.27 (8-Mar-2002)
/dev/hdb is entire device, not just one partition!
Proceed anyway? (y,n) y
mkfs.ext2: No such device or address while trying to determine filesystem size
I understand that you have a hardware raid setup, but I read that message as saying sdb (2nd drive on scsi bus) is 150GB. Now three 73GB drives in raid 5 would equal that amount. So the next question I guess is do you have all the necessary kernel options either configured into the kernel or loaded as modules?
Check to see if the kernel has the SCSI adapter driver built in, or if it is using some type of generic support.
It is always a good idea (in my mind) to compile a kernel for your hardware rather than a distrobutions CD trying to do it for you. Verify that each device is supported and remove unwanted or un-used support that you don't need.
You can gather the necessary infomation about your system by typing lsmod lspci
Also, you can look at many files inside of /proc to get more info.
Is your RAID controller onboard or is it a PCI card?
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Distribution: Siduction, the only way to do Debian Unstable
What kernel are you useing?
What type of raid...software hardware?
What exact raid card are you useing?
Is it supported for that kernel version you are useing?
You can not mount and you can not format raw devices like /dev/sdb. You have to make a partition before formatting. After you have made the partition, you have to reboot and then you can format /dev/sdb1. Rebooting is needed after you created the partition with fdisk, cfdisk, or sfdisk.
Silicon Image is not a hardware RAID controller. It is a software RAID controller. It uses the main processor to handle the RAID requests. RAID 0 does not improve OS performance. RAID 1 increases OS performance because it can read two files instead of one file at a time. Also RAID 1, is more reliable than RAID 0 for a server or for any system that is using it to store the OS. Use RAID 0 for video capturing, huge graphic files, sound, but never use for an OS drive.
For RAID 5 to be effective, you need atleast four hard drives. Using three hard drives for RAID 5 is not enough if one hard drive fails.
Saying "We've installed Red Hat 7.3" does not give you any credit. Sheesh, say "I installed blah, blah" to give yourself credit. Please do not mix third person in first person.