User's Guide
Table Of Contents
- SCSI Command Support
- SCSI Commands
- Initialize Element Status - 07h
- Initialize Element Status With Range - E7h
- Inquiry - 12h
- Log Sense - 4Dh
- Mode Select (6) - 15h
- Mode Select (10) - 55h
- Mode Sense (6) - 1Ah
- Mode Sense (10) - 5Ah
- Mode Pages
- Move Medium – A5h
- Persistent Reserve In – 5Eh
- Persistent Reserve Out – 5Fh
- Position to Element – 2Bh
- Prevent Allow Medium Removal – 1Eh
- Read Buffer – 3Ch
- Read Element Status – B8h
- Release Element (6) – 17h
- Release Element (10) – 57h
- Report LUNS – A0h
- Request Sense – 03h
- Request Volume Element Address - B5h
- Reserve Element (6) - 16h
- Reserve Element (10) - 56h
- Send Diagnostic - 1Dh
- Send Volume Tag - B6h
- Test Unit Ready (00h)
- Write Buffer (3Bh)
88 SCSI Commands
Reserve Element (10) - 56h
What the Library Does With This Command
The library reserves the entire library for the initiator making the request. Only whole logical unit reservations
are allowed; individual element reservations are not supported. The reservation remains in effect until either
the initiator that made the reservation sends a RELEASE command, or a reset or power-cycle of the library
occurs.
This command is only supported if the library control path is provided by a tape drive.
Command Usage
This command should be used to reserve the library for extended operations, such as issuing a SEND
VOLUME TAG followed by a REQUEST VOLUME ELEMENT ADDRESS sequence. Initiators issuing a
RESERVE should follow it with a RELEASE when the extended operation sequence is complete.
Reserve Element CDB Format
The RESERVE ELEMENT CDB format is shown in the following table.
3rdPrty – This field is not supported, and must be set to 0.
LongID – This field is not supported, and must be set to 0 as IDs greater than 255 are not supported.
Third Party Device ID – This field is required and used only when the 3rdPrty bit is set. Since the 3rdPrty
bit is not supported, this field must be set to 0.
Parameter List Length – This field is not supported, and must be set to 0.
Table 84 RESERVE ELEMENT CDB format
Bit
Byte
76543210
0 Op Code (57h)
1 Logical Unit Number 3rdPrty Reserved LongID
Rsvd
2 Reserved
3 Third Party Device ID
4
:
6
Reserved
7
:
8
MSB
Parameter List Length
LSB
9 Control