Ref: 13420013
Title: Drive Identifiers Needed for 3+Open Backup
date: 7/1/90

Copyright 3Com Corporation, 1991.  All rights reserved.

When performing a backup on a 3Com dedicated server running with User
level security, the backup service must have two drive identifiers available
to it for Backup to operate properly.  The hard drives can be formatted
for 22 partitions (C: through X:), leaving Y: for the tape drive sharename
and Z: for the backup service to link to so that it can perform a backup.

If a server has one or more expansion units, extra drive identifiers
may not be available.  In this case, 3Com recommends that the drives be
formatted into larger partitions so fewer drive identifiers will be used.
This will ensure that there will always be some drive letters left over
for the backup service to use.

Servers with Share level security may also run out of drive identifiers.
Under Share level security, a backup server must link to ADMIN$ of the
source server for Backup to work.  If one were to use Z: as the link for
ADMIN$ and Y: was used up by the tape sharename, there would not be
another letter available for Backman to use to perform its operations.
However, it is possible to link to ADMIN$ without using a drive identifier.

If a letter is used, type:

    NET ADMIN \\backupserver /C NET USE Z: \\sourceserver\ADMIN$

To refresh the link in case of an autodisconnect, type:

    NET ADMIN \\backupserver /C DIR Z:


If a drive letter is NOT used, type:

    NET ADMIN \\backupserver /C NET USE \\sourceserver\ADMIN$

To refresh this special link, type:

    NET ADMIN \\backupserver /C NET USE

