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Conference ssag::ask_ssag

Title:	Ask the Storage Architecture Group
Notice:	Check out our web page at http://www-starch.shr.dec.com
Moderator:	SSAG::TERZAN

Created:	Wed Oct 15 1986
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	6756
Total number of notes:	25276

6722.0. "Capacity left on TZ88 tape" by CGOOA::FEDDEMA () Tue May 27 1997 15:04

    Is the command to determine the remaining capacity of a tape supported
    on the TZ88?  THis command works on the Quantum equiv but when used on
    a TZ88 the drive always returns a zero.
    
    tf

T.R	Title	User	Personal Name	Date	Lines
6722.1		SSDEVO::ROLLOW	Dr. File System's Home for Wayward Inodes.	`Tue May 27 1997 23:17`	7
	What command does it use? I'm guessing that it relies on a log or mode page, so you'd need something that sends a SCSI Log Sense or Mode Sense command to get the data. If the data is available in our versions of the drives. I think the question has been asked recently either here or in MAGTAPE (on STKHLM::), so there might already be some information around.
6722.2	New feature..	SUBSYS::TRAN	Straight <Left> Hitter..	`Thu May 29 1997 15:40`	10
	Yes.. This issue has been responded several times. Current shipped FW on TZ88 products is V52 which doesn't include this feature, the next release is V80 (soon) will have this feature enable. Basically, the fields are after standard REQUEST SENSE data. This info only available when there is no Check Condition when REQ SENSE is issued. TZ89 has this feature enabled. But not TZ87 with current shipped FW. T.