When tape files are processed, device requests are made via the volume type specification in the DEVICE-TYPE operand. Device management then supplies a device that supports the specified volume type. The following values can be specified in the DEVICE-TYPE (or TYPE) operand:
Command | Permissible specifications for the volume type | ||
|---|---|---|---|
TAPE T6250 | WORK | TAPE-C3/C4/ | |
CREATE-FILE | X | X | X |
CREATE-FILE-GENERATION | X | X | X |
CREATE-TAPE-SET | X | X | |
EXTEND-TAPE-SET | X | X | |
MODIFY-FILE-ATTRIBUTES | X | X | |
MODIFY-FILE-GENERATION-SUPPORT | X | X | |
IMPORT-FILE | X | X | |
SECURE-RESOURCE-ALLOCATION | X | X | X |
The overview below indicates which devices (see device table for device types) can be assigned to the various volume types.
Volume types for magnetic tape devices
T6250 | 9-track tape devices which support a recording density of 6250 bpi (bytes per inch); (T9G is a synonymous volume type) |
TAPE | 9-track tape devices independent of the supported recording density: same device types as for T6250 |
WORK
| 9-track tape devices independent of the supported recording density: same device types as for T6250 A device on which a work tape is mounted is assigned (assignment of a VSN can only be performed by the operator). A work tape is not normally archived, and it is therefore a good idea to only use it for output data that is no longer required after processing. No owner entered the VOL1 label, i.e. the volume is not protected against unauthorized access. |
Volume types of magnetic tape cartridge devices (MTC)
TAPE-C3 | MTC (device type 3590E) 36-track, uncompressed recording |
TAPE-C4 | MTC (device type 3590E) 36-track, compressed recording |
TAPE-U2 | MTC (device type LTO-U2) 512-track |
TAPE-U3 | MTC (device type LTO-3) 704-track |
TAPE-U4 | MTC (device type LTO-U4) 896-track, Data is written in unencrypted form, (see the “MAREN” manual [23]) |
TAPE-U4E | MTC (device type LTO-U4E) 896-track, Data is written in encrypted form, (see the “MAREN” manual [23]) |
TAPE-U5 | MTC (device type LTO-U5) 1280-track, Data is written in unencrypted form, (see the “MAREN” manual [23]) |
TAPE-U5E | MTC (device type LTO-U5E) 1280-track, Data is written in encrypted form, (see the “MAREN” manual [23]) |
TAPE-U6 | MTC (device type LTO-U6) 2176-track, Data is written in unencrypted form, (see the “MAREN” manual [23]) |
TAPE-U6E | MTC (device type LTO-U6) 2176-track, Data is written in encrypted form, (see the “MAREN” manual [23]) |
TAPE-U7 | MTC (device type LTO-U7) 3584-track, Data is written in unencrypted form, (see the “MAREN” manual [23]) |
TAPE-U7E | MTC (device type LTO-U7) 3584-track, Data is written in unencrypted form, (see the “MAREN” manual [23]) |
| TAPE-U8 | MTC (device type LTO-U7) 6656-track, Data is written in unencrypted form |
| TAPE-U8E | MTC (device type LTO-U7) 6656-track, Data is written in encrypted form |
An overview of the devices which are supported by the current version of BS2000 operating system is contained in the device table in the “System Installation” manual [46]. For information on which devices are currently supported, please refer to the Release Notice.