RAID3, Software, How to setup
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Example system has 1 80GB SATA system drive at /dev/ad0, and 5 750GB SATA drives available at /dev/ad1 through /dev/ad5.
# graid3 load # graid3 label myraid3array ad1 ad2 ad3 ad4 ad5
You just made a RAID3 array... yes, it really was that easy. Check it out:
# graid3 status Name Status Components raid3/myraid3array COMPLETE ad1 ad2 ad3 ad4 ad5
Now we need to format and mount it:
# newfs /dev/raid3/myraid3array
(you'll get several pages of cluster IDs scrolling by at this point, for a raid3 array of any significant size. On the example 5x750GB array we're discussing here, this step took about 90 seconds.)
# mkdir /mnt/myraid3array # mount /dev/raid3/myraid3array /mnt/myraid3array
Voila, we now have a gigantic failure-tolerant array available!
# df -h /mnt/myraid3array Filesystem Size Used Avail Capacity Mounted on /dev/raid3/myraid3array 2.6T 12K 2.6T 0% /mnt/myraid3array
Don't forget to add an entry to /etc/fstab if you want to mount your new array automatically on boot. You're done!