Reserve Element (6) - X'16'
Table 1 shows the format of the Reserve Element command for the tape library.
| Byte | Bit 7 MSB |
Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 LSB |
|---|---|---|---|---|---|---|---|---|
| 0 | Operation Code (X'16') | |||||||
| 1 | LUN (Obsolete) | 3rdPty (B'0') | Third Party Device ID (B'000') | Element (B'0') | ||||
| 2 | Reservation Identification (X'00') | |||||||
| 3-4 | Element List Length (X'0000') | |||||||
| 5 | Vendor Specific (B'00') | Reserved (B'0000' | Flag (B'0') | Link (B'0') | ||||
Note: When multiple logical libraries or control paths are
configured, the library has multiple medium changer device ports (through
LUN 1 of the drives in LTO Ultrium or 3592 frames). See
the IBM® TS3500 Introduction
and Planning Guide. Medium changer device reservations
prevent access for those initiators only by using the same device
port as the initiator that sent the Reserve command. Initiators that
use another device port (for example, for a different logical library
or different control path) are not affected.
The following tape library-specific parameters apply:
- 3rdPty: Third Party. Not supported by the tape library.
- Third Party Device ID: Not supported by the tape library.
- Element: Element reservation. Not supported by the tape library.
- Reservation Identification: Not supported by the tape library.
- Element List Length: Not supported by the tape library.