Q65533: OS/2 LAN Manager: Numbering of Fault-Tolerance Drives

Article: Q65533
Product(s): Microsoft LAN Manager
Version(s): 
Operating System(s): 
Keyword(s): 
Last Modified: 30-JUL-2001

SUMMARY
=======

The following is an explanation of how fault-tolerance drives are numbered.

The first logical drive in each primary partition on each drive is lettered
consecutively (that is, C on Disk 0, D on Disk 1, E on Disk 2, etc.). The
remaining drives are lettered successively on a per-drive basis. For example:

     DISK  80h          DISK  81h
  +-------------+    +-------------+
  | DRIVE  C    |    | DRIVE ??    |  <-- Primary partition if one
  | 80 MB       |    |             |      exists on the second drive.
  +-------------+    +-------------+
  | DRIVE ?     |    | MIRROR OF   |
  |             |    |  DRIVE ?    |  <-- Extended partition that the
  | 245 MB      | ==>|             |      mirrors are created in.
  |             |    |  245 MB     |
  |             |    |             |
  |             |    |             |
  +-------------+    +-------------+

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