Difference between revisions of "Terastation Harddisk Layout (PPC)"

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In the RAID-5 layout, The hd*3 partitions are joined via RAID-5 to make the 700 GB RAID space.
 
In the RAID-5 layout, The hd*3 partitions are joined via RAID-5 to make the 700 GB RAID space.
  
The use of the hd*4 partitions is currently unknown. Maybe there is an emergency system stored there.
+
The use of the hd*4 partitions is currently unknown. Maybe there is an emergency system stored there. Hm, unlikely:
 +
 
 +
  Dec 12 13:48:40 LUXOR kernel: md: invalid raid superblock magic on hda4
 +
  Dec 12 13:48:40 LUXOR kernel: md: hda4 has invalid sb, not importing!
 +
  Dec 12 13:48:40 LUXOR kernel: md: could not import hda4!
 +
 
 +
probably just unused.
  
 
The hd*2 partitions are activated as individual swap spaces during boot. There is a potential problem here; should one of the disks die while in use, the whole system is likely to crash because of inaccessable swap space.
 
The hd*2 partitions are activated as individual swap spaces during boot. There is a potential problem here; should one of the disks die while in use, the whole system is likely to crash because of inaccessable swap space.

Revision as of 14:59, 12 December 2005

(Information on this page currently for the 1 GB version.)

The TeraStation has four Western Digital 250 GB hard disks (WDC WD2500BB-22GUC0) on four IDE buses of a IT8212 type controller. Each disk is partitioned approximately like this:

  • partition 1, 400 MB, RAID auto-detect
  • partition 2, 120 MB, Swap
  • partition 3, rest of disk, RAID auto-detect
  • partition 4, 200 MB, RAID auto-detect

The hd*1 partitions are joined via RAID-1 to make the 400 MB root filesystem.

In the RAID-5 layout, The hd*3 partitions are joined via RAID-5 to make the 700 GB RAID space.

The use of the hd*4 partitions is currently unknown. Maybe there is an emergency system stored there. Hm, unlikely:

 Dec 12 13:48:40 LUXOR kernel: md: invalid raid superblock magic on hda4
 Dec 12 13:48:40 LUXOR kernel: md: hda4 has invalid sb, not importing!
 Dec 12 13:48:40 LUXOR kernel: md: could not import hda4!

probably just unused.

The hd*2 partitions are activated as individual swap spaces during boot. There is a potential problem here; should one of the disks die while in use, the whole system is likely to crash because of inaccessable swap space.