IBM T200F manual LOG Select Command

LOG SELECT

Table 14. LOG SELECT Command

	7		6	5		4		3	2	1	0
0					Operation Code (4Ch)
1	Logical Unit Number (0)							Reserved		PCR	SP(0)
2		PC						Reserved
3						Reserved
4						Reserved
5						Reserved
6						Reserved
7					Parameter List Length
8
9							Control

The LOG SELECT command causes log data on the drive to be reset to its default value or to be set to an initiator-specific value.

If the Parameter Code Reset (PCR) flag is set, the Parameter List Length is 0, and the Page Control (PC) field is 01b or 11b, then all the logs on the drive that can be reset are reset to their default values.

If the Parameter Code Reset (PCR) flag is set, the Parameter List Length is 0, and the Page Control (PC) field is 00b or 10b, then no action is taken and Good status is returned.

If the Parameter Code Reset (PCR) flag is clear, the Parameter List Length is not 0, and the Page Control (PC) field is 01b or 11b, then data is sent from the server and is written to the indicated logs, provided those logs are writable.

If the preceding conditions do not apply, Check Condition status is returned. The Sense Key is set to Illegal Request and the ASC/ASCQ is set to Invalid Field in CDB (2400).

The Save Page (SP) flag is not supported and must be set to 0.

16Ultrium Internal Tape Drive and 3580 Ultrium Tape Drive: SCSI Reference