Preparing a Soft RAID5 NAS

Yesterday, I had a chance to rebuild our NAS system which consisted of 6 disks (with the smaller one being a 1.5 TB SATA III 7.5k rpm Seagate Barracuda, the bigger one being a 2TB SATA III 5.9k rpm Seagate Barracuda Green). I took this opportunity to document the necessary steps in rebuilding this system, […]

Checking XFS file system

The other day, I tried to check a 7.5 TB XFS partition, after I upgraded the server hosting that particular partition from CentOS 5.7 to SL 6.1.  The partition was built from 6 drives of Linux MD RAID 5. So I ran # xfs_check /dev/md0 and after a while, boom, the system killed the program […]

Recovering Lost Password for IBM DS3400

Months ago, we planned to add some capacity to our SAN storage system, a dual-controllers IBM DS3400, by ordering some additional SAS drives. After the drives arrived, one big problem came up: I forgot the administrative password to login to the DS3400 controllers. This actually showed that this disk system was built to last as […]