Compaq 157770-001 - DAT Drive 20/40 Tape Instruction Manual

HP StorageWorks DAT 160 SAS Tape
Drives releasenotes
Part number: Q1587–90919
First edition: July 2008

Description
The release includes updated firmware for DAT 160 SAS tape drives.
HP StorageWorks Library and Tape Tools (HP L&TT) must be used to download firmware to the tape drive.
Drive firmware version: WS86
Update recommendation Recommended
Supersedes WS77
Product models
•HP StorageWorks DAT 160 SAS Internal Q1587A
•HP StorageWorks DAT 160 SAS External Q1588A
Operating systems
•Operating systems supported by HP StorageWorks Library & Tape Tools. See
http://www.hp.com/support/tapetools.
Languages
•English (American)
•English (International)
Driveresetissuewithqueuedcommands
The error was occurring because DDS tape drives do not support command queuing. If software
applications issued inquiry commands whilst a rewind or space command was being performed, the
previous firmware could not execute an inquiry command before the command timed out. Since timeouts
are normally indicative of a more serious problem, the HBA then issued a hard reset which also aborts
the rewind (or space command).
The new firmware has been modified to execute an inquiry command while a rewind (or space) is
in progress.
Missing Filemark (FM) when reading
All records in the sequence were returned correctly but the Filemark was sometimes ignored. This issue
has now been fixed.
Pressing Eject hangs drive after 17.4 days inactivity
If there is a cartridge in the drive and there has been no tape activity for a minimum of 17.4 days, the
READY LED will flash continuously when the Eject button is pressed and there will be no attempt by the
drivetoejectthetape.AllSCSIcommandswillhang.Thedrivewillremaininthisstateforafurther17.4
days when the cartridge will be ejected.
This problem has now been fixed.
HP StorageWorks DAT 160 SAS Tape Drives release notes 3

Installation instructions
Use HP StorageWorks Library & Tape Tools (L&TT) to update the tape drive firmware. You can download
L&TT from http://www.hp.com/support/tapetools. Online help and instructions are included with
the utility.
NOTE:
Once the download has started, do NOT power off the unit or interrupt the firmware download process
until the download is complete. Doing so could leave the product in a non-usable state.
The firmware files can also be obtained on the external HP support website: http://www.hp.com/
support/storage . Select your product from the list and follow the instructions from the Web page.
NOTE: If you have trouble finding your product or firmware, use the Product Search function from
http//www.hp.com/support/downloads.
Determining current version
You can check your current firmware revision from HP Library & Tape Tools (L&TT). Launch L&TT, select the
productfromthelowerlefthandframeandclickontheidentitybuttonatthetop(ifnecessary).
Firmware Version Released Status
WS77 7/2007 Active
WS86 8/2008 Active
Effective date
August 1, 2008
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