HP NonStop G-Series - Manual (Page 179)

Using Labeled Tapes
Guardian User’s Guide — 425266-001
10- 5
Tape Processing Modes
Tape Processing Modes
If you use labeled-tape processing, you can open a tape file in one of three tape
processing modes:
Standard Label Processing (LP) Mode
1. An application generates a mount request at the operator console for a specific
labeled tape.
2. The operator can:
•
Mount the requested labeled tape, or
•
Reject the request
Unlabeled or No Label Processing (NL) Mode (Default)
1. Mount requests are not generated for unlabeled tapes. (Labeled tapes are rejected.)
2. The system processes the open according to the state of NLCHECK for that drive:
•
If NLCHECK is on, a super-group user (user ID 255, n ) must give permission
for the open using a TAPECOM ACCEPT command for the tape drive.
•
If NLCHECK is off, permission is not required.
Bypass Label Processing (BLP) Mode
1. An application generates a request at the operator console for a specific tape drive.
2. The system processes the open according to the state of BLPCHECK for that drive:
•
If BLPCHECK is on, a super-group user (user ID 255, n ) must give permission
for the open using a TAPECOM ACCEPT command for the drive.
•
If BLPCHECK is off, permission is not required.
3. If the operator accepts the request:
a. The system unloads any mounted labeled tape.
b. The operator mounts the tape to be used.
c. The operator must ensure that the correct tape is mounted since the system does
not check the tape.