LTO Q1595B - StorageWorks Ultrium 960 Tape Drive Instruction Manual

LTO 960 SCSI G66D Firmware
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release notes
Part number: Q1538-90930
1st edition: June 2008

Description
This document outlines the main changes for the G66D firmware maintenance release version. These
changes are a combination of customer reported issues and enhancements found via HP internal testing.
Update recommendation Recommended
Supersedes G64D
Product models
HP Storageworks 960i Q1538A
HP Storageworks 960e Q1539B
HP Storageworks 960m (Rack Mount) Q1540A
Operating systems
Cross operating system (BIOS, Firmware, Diagnostics, etc.)
Enhancements
In this code release, the Drive Error LED is turned on when a DSP fault 0x7708 (Actuator Stroke Size
Too Small) occurs.
Fixes
Drive hangs
This code introduces improvements for hangs which could occur during writing operation.
Read/space issues
•This code version introduces improvements in the logical positioning function to cater for the rare
occasions where non-inquiry fast commands are aborted.
•This code revision introduces improvements in reading tapes written by non-HP drives. Those
improvements are an additional read retry and a change to an existing read retry algorithm, as
wellasintheformofmoreoptimizeddrivetuning.
•This code version introduces improvements in spacing/positioning operations for corner case
scripts which use very large record sizes. In cases where 1Mb/2Mb records were written and
2Mb/4Mb reads were requested, possible mispositioning errors are eliminated.
This code introduces improvements for hangs which could occur during writing operation.
Write issues
This code introduces improvements in the DSP tape expansion and tape tilt algorithms, to help in several
situations, such as when thermal events occur.
Cartridge, cartridge memory and MAM
This code version introduces a feature to avoid any unnecessary warning messages from an LTO-4
compliant software application.
LTO 960 SCSI G66D Firmware release notes 3

SCSI related issues
Previously, if more than one command was sent from the same host to the primary port and the same LUN
and one of those commands was aborted, the others were also aborted. This was because the firmware
treated this situation as an Abort Task Set management function. Because tags are not always provided
by FC and pSCSI HBAs, the firmware instead uses its own internal unique command identification to
abort specificc
ommands (Exchange ID). This issue has been fixed.
Prerequisites
None
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
G64D 5/7/2007 Active
G66D 5/2/2008 Active
Effective date
June 12, 2008
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