Differences

This shows you the differences between two versions of the page.

--- raid [2009/10/13 05:31] – 172.26.0.166
+++ raid [2009/11/16 13:59] – 172.26.0.166
@@ Line 5: / Line 5: @@
 ==== Drive numbering ====
-If you're looking at the front of the HPC you'll see four rows of drives.  From the bottom;
+If you're looking at the front of the HPC you'll see four rows of drives.  From the bottom:
   * Rows 0 - 2 are SATA, connected to the hardware 3ware RAID card
   * Row 3 are IDE
@@ Line 50: / Line 50: @@
 unused devices: <none></code>
+==== Repair RAID ====
+Setting a disk faulty/failed:
+# mdadm --fail /dev/md0 /dev/hdc1
+DO NOT run this every on a raid0 or linear device or your data is toasted!
+Removing a faulty disk from an array:
+# mdadm --remove /dev/md0 /dev/hdc1
+Clearing any previous raid info on a disk (eg. reusing a disk from another decommissioned raid array)
+# mdadm --zero-superblock /dev/hdc1
+Adding a disk to an array
+# mdadm --add /dev/md0 /dev/hdc1
 === To Do list: ===