Mode sense (6) - 1ah, What the library does with this command, Command usage – Dell PowerVault ML6000 User Manual
Page 43: Mode sense (6) cdb format, Table 30 mode sense cdb format
PowerVault ML6000 SCSI Reference Guide
33
Mode Sense (6) - 1Ah
What the Library Does With This Command
The library will return the current settings for the supported mode pages. This command can be issued to
the Controller logical unit as well as the Media Changer logical units. The mode pages supported by each
device vary.
Command Usage
This command can be used to determine certain operational settings governing the behavior of the library.
For example, the number of elements and their assigned addresses can be obtained through use of MODE
SENSE, which allows an application to adapt to a library configuration instead of using fixed values. Use of
MODE SENSE to obtain these parameters during initialization is highly recommended to facilitate the most
flexibility in supporting the library.
Mode Sense (6) CDB Format
The six-byte MODE SENSE CDB format is shown in the following table.
Disable Block Descriptors (DBD) - A value of 0 or 1 is supported, although block descriptors are not
returned.
Table 30
MODE SENSE CDB format
Bit
Byte
7
6
5
4
3
2
1
0
0
Op Code (1Ah)
1
Logical Unit Number
Rsvd
DBD
Reserved
2
PC
Page Code
3
Reserved
4
Allocation Length
5
Control