Read Element Status; Table 6-70 Read Element Status Command - Sun Microsystems storagetek sl500 Reference Manual

Read Element Status

The Read Element Status command (B8h) requests that the library return the status
of the elements in the library.

TABLE 6-70 Read Element Status Command

Byte 7
0
1
2 (MSB)
to
3
4 (MSB)
to
5
6
7 (MSB)
to
9
10
11
Read Element Status Command Definitions:
VolTag
Element Type Code
Starting Element
Address
96122 • Revision: F
6 5
Operation Code (B8h)
Ignored VolTag
Starting Element Address
Number of Elements
Reserved (00h)
Allocation Length
Control Byte (00h)
This bit indicates whether volume tag (VolTag) information is to be reported in
response to this command:
0 = Volume Tag information is not reported
■
1 = Volume Tag information is reported.
■
This field specifies the particular element types selected for reporting:
0h = All Element Types reported
■
1h = Medium Transport Element (hand)
■
2h = Storage Element (cartridge tape storage cells)
■
3h = Import/Export Element (CAP cells and PTP cells)
■
4h = Data Transfer Element (tape drive)
■
For an Element Type Code of 0h, the element types are reported in ascending
element address order, beginning with the first element greater than or equal
to the Starting Element Address.
This field specifies the minimum element address to report. Only elements
with an element address greater than or equal to the Starting Element Address
are reported.
Element descriptor blocks are not generated for undefined element addresses.
The Starting Element Address is set to a valid address for the library but does
not have to be an address of the type requested in the Element Type Code.
Bit
4 3
Element Type Code
Reserved (00h)
Chapter 6 SCSI Commands 181
Read Element Status
2 1 0
(LSB)
(LSB)
CurData DvcID
(LSB)