Scalar DLC Reference Guide
273
SCSI Command Format
The SCSI command format follows the SCSI-2 and SCSI-3 standard. Table below describes the CDB fields
that are common to all commands.
SCSI Command Status Byte
Both the Scalar 1000 and Scalar 10K enter the status phase once per command, unless a retry is requested
by the initiator. Table below describes the library return status bytes.
2Bh
POSITION TO ELEMENT
1Eh
PREVENT/ALLOW MEDIUM REMOVAL
3Ch
READ BUFFER
B8h
READ ELEMENT STATUS
1Ch
RECEIVE DIAGNOSTIC RESULTS
17h
RELEASE
03h
REQUEST SENSE
B5h
REQUEST VOLUME ELEMENT ADDRESS
16h
RESERVE
01h
RE-ZERO
1Dh
SEND DIAGNOSTIC
B6h
SEND VOLUME TAG
00h
TEST UNIT READY
3Bh
WRITE BUFFER
Command Description
Logical Unit
Number
The library has a single Logical Unit Number (LUN). The library always appears as LUN
0. If the LUN is specified in the IDENTIFY message, the LUN field in the CDB is ignored
by the library.
Reserved
The word Reserved or Rsvd refers to a field defined by the SCSI standard as 0. The
library checks the field for 0. If the field is not 0, the library returns Check Condition
status with a sense key of Illegal Request.
Control Byte
The vendor unique portion of the Control Byte is defined in the specific command.
Not
Implemented
This description indicates that the field is a SCSI standard but is not supported by the
library.
Operation code
Command
Summary of Contents for Scalar 1000
Page 14: ...xiv Figures...
Page 86: ...70 Management GUI...
Page 188: ...172 Configuration Tab...
Page 198: ...182 Events Tab...
Page 254: ...238 Tools and Utilities...
Page 282: ...266 DAS Guide...
Page 292: ...276 SCSI Guide...
Page 300: ...284 ROBAR Guide...
Page 304: ...288 Index...