We have the same problem with the NT client on several Win NT AS platforms.
But - the problem is only with running the scheduler as NT service. Running
it as batch or initiating a backup using the GUI works fine.
We opened an IBM problem ticket in Germany (#54834) some time ago but up to
now, no solution is available.

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An: * ADSM-L @ DIAMOND
Kopie:
Von:  owner-adsm-l[INET.OWNERADS] @ DIAMOND @ EDS HUB @ EDSHUBEUROPE
Datum: 20.03.96 09:36:07
Thema: Invalid drive specification

subject:Invalid drive specification

Hi Folks,
We have a Win NT Advanced sever to be backed up by ADSM.
In DSM.OPT is a line: DOMAIN C: E: F:
When manually backin up everything goes fine,but when the scheduler runs,
we get msg: ANS4147E Drive E: is an invalid drive specification.
Has anybody seen this before?

TIA,
Kees Koopman
Hoogovens Groep BV
Netherlands