IBM Magstar 3494 manual Logical Volser Validity Checking

When the Convenience Input¤Output Station is in Import mode, any J-type cartridge

(High-Performance Cartridge Tape) is added to the database in the Unassigned

category. Using the Manage Unassigned Volumes panel, shown in Figure 129 on

page 202, the operator can assign the volumes in the Unassigned category to the

Import category, assign volumes to the appropriate Insert category and partition

based on the volser ranges, or eject a volume.

If any character of the volser cannot be read or any character is invalid (not A±Z or

0±9 or blank), the volser is not added to the inventory and the cartridge is ejected

to an Input/Output Station. A volume noti®cation message is sent to all attached

hosts indicating that a volume remains in the Input/Output Station with an invalid or

unreadable label. If this happens, the operator must determine why the volser is

unreadable and correct the label before trying to reinsert the cartridge.

If the cartridge media type cannot be determined by the vision system, and the

volser does not ®t into an established volser range, and a default media type is not

de®ned, then the cartridge will be ejected from the library to an input/output station.

When a volser is inserted in the Convenience Input¤Output Station that is already in

the inventory (a possible duplicate volser), an audit is performed.

If the volser is a duplicate, the cartridge is ejected to the Convenience Input¤Output

Station. If the volser is not a duplicate, the cartridge from the Convenience

Input¤Output Station is left in the new home cell.

If the misplaced or inaccessible volume indicators are set in the database, they are

reset and a noti®cation is sent to all attached hosts that indicates the volume was

found or made accessible again. Also, if the volume was used during Manual mode

indicator was set, it is reset.

A noti®cation that describes the results of the audit is sent to all attached hosts.

Note: A service volume found in the Convenience Input¤Output Station causes a

validity check because its volser contains an invalid characterÐan

embedded blank. A service volume must, instead, be placed in the cell

reserved for it in the Control Unit frame, or be inserted using a special

service volume insert process available in Service Mode.

Logical Volser Validity Checking

When logical volumes are inserted into the library (refer to ªInsert VTS Logical Volumesº on page 163), the library manager checks the volser range values for validity.

The Insert Logical Volumes function is not performed if the volser range characters are invalid (not A-Z or 0-9), there are fewer than 6 characters, or if the two volsers entered are not the same format. Corresponding characters in each volser must both be either alphabetic or numeric. For example, AAA998 and AAB114 are of the same form, whereas AA9998 and AAB114 are not.

Logical volume volsers must be unique within a physical library. If a volser already exists in the database for any logical library (non-VTS or VTS), the logical volume is not inserted. The Library Manager then attempts to insert the next logical volume.

Chapter 3. Operational Characteristics 53