• Supporting the HP StoreEver MSL6480 Tape Library.

• Extending the diagnostic capability for LTO tape drives.

• Improving usability.

• Virtual libraries and D2D backup devices — Reinstated support for D2D virtual drives for performance testing.

• Tape libraries and autoloaders — Added support for the MSL6480.

• Tape drives — Same as L&TT 4.15.

• Other backup devices — Same as L&TT 4.15.

• L&TT support for the most recent releases of D2D emulated drives is broken for all emulated LTO drive types, due to a change within the drive emulation behavior and therefore cannot be worked around with previous versions of L&TT.

• L&TT support is limited to what can be done with emulated devices. Please use the relevant Command View GUI for access to the support information for the physical device.

• The MSL6480 does not currently support the Device Self-Test.

• Ethernet access specifics

  • Minimum firmware versions for LTO-5 drives: I58W, Y58W, Z58W

  • Minimum firmware versions for LTO-6 drives: J27W, J2AS, 22CW, 32AW

  • Firmware update over Ethernet updates the firmware but the drives are not always rediscovered by the library on completion. HP recommends that you continue to use Command View TL or the MSL RMI for updating drive firmware in libraries.

  • Drive and L&TT behavior is unpredictable (and not fully tested) when the drive is being used at the same time that L&TT is talking to it. It is recommended that the library is quiescent when using L&TT over Ethernet, as is recommended for host access.

• In the front panel window, the ESL G3 library shows LTO-6 drives as LTO-5 drives. This is a library firmware issue and will be fixed in a future library firmware release.

• The ESL G3 tape library does not offer diagnostic access over its host interface, which limits L&TT to standard functionality. This still allows most of the library tests to be run, but pulling tickets and updating firmware is not supported. Please use Command View TL to pull tickets and update library firmware. Access to the drives is unchanged and full functionality is available

• When using L&TT on a Linux operating system, firmware downloads to an MSL2024 Library may fail. If this happens, the firmware does get downloaded to the unit, but L&TT does not properly reflect the status of the unit when the download completes.

• In a library with mixed drive technologies, drive firmware cannot be downloaded from the library firmware download screen. Each drive must be selected individually for download. (Future enhancement)

• If a device is in a 'Not Ready' state, L&TT may not be able to perform all diagnostic functions. Most devices are only very briefly in this state, but some libraries can take a significant amount of time after power-up or after a firmware download before becoming ready. If this problem is encountered, wait until the device is in a ready state and then use L&TT. (Future enhancement)

• DAT72x6 – After using the L&TT front panel and then closing L&TT, the autoloader is left ‘locked'. This is expected product behavior. The workaround is to eject the magazine to unlock.

• DDS2/3/4 autoloaders do not function in L&TT with the option switch value set to return the standalone drive ID. This causes an ‘unsupport product' response. L&TT works fine with the switch in default position. This is expected product behavior.

• USB devices — Hot plugging a device (such as a USB memory stick) on the same USB bus as a Tape Drive can cause a bus reset, and therefore any test in progress on that drive may abort or fail.

• DLT 8000 – Firmware upgrade appears to fail with LSI U320 HBA. It does actually upgrade OK. Using firmware upgrade tape works fine.

• Windows — Device scan can fail intermittently with 'Unexpected Win32 error encountered during I/O scanning: 2' error message. Work-around is to re-scan.

• Windows Vista, 7, and 2008 — L&TT will sometimes APPCRASH on exit.

• Windows — if installing with Microsoft Installer package 4.5 uninstall the previous version manually first otherwise the installation will not complete correctly.

• HP-UX — Running the LTO Drive Assessment test on multiple drives concurrently can cause a core dump. The exact number is not known but is in the region of 8 or more.

• Linux in CLF (command line) mode – LTO Drive Assessment test output scrolls off the screen at the end of the test. Test results can still be found in the ResultLog.ltt files.

• Mac — Device performance tests are limited to approximately 220 MB/s. The Get files from web feature is not supported so L&TT cannot check for the availability of the latest firmware.

• OpenVMS

  • The Get files from web feature is not supported so L&TT cannot check for the availability of the latest firmware.

  • L&TT stops part way through the Read Write test when used with the Full Volume option because of excess memory consumption.

• VMware – L&TT has limited testing and support for standalone SAS drives and all libraries. There are no known issues. Install check and system performance tests are not supported.

• There is some inconsistency between the reporting of data capacity and volume between tests. Some tests report data based on the power of 10, whereas others report data based on the power of 2. L&TT is transitioning to the power of 10–based reporting to match industry specifications.

• If L&TT is unable to automatically verify successful completion of a firmware update and is then re-selected from the previous scan, L&TT may exit with an exception. The cause is that the operating system has performed its own re-scan and logically moved the device after its update. If this happens, use L&TT rescan to locate the device. In these cases the firmware update was usually successful.

The Windows version of L&TT uses the InstallShield application.

Reboot requirements

Known issues

To install L&TT on HP OpenVMS:

1. Download or copy the L&TT .zipexe file to a temporary directory.

2. Navigate to the directory you copied the install file to and enter the following commands:

   run hp-axpvms-ltt-v<xx>-1.zipexe (where <xx> is the version number) (alpha platforms)

   product install ltt

   The installation procedure creates the directory structure opt.ltt in sys$sysdevice:[vms$common] and installs all the required files for L&TT.

To install the L&TT package:

1. Login as root.

2. Navigate to the temporary directory:

   cd /tmp

3. Download or copy hp_ltt<xx>.tar (where <xx> is the version number) to this directory.

   If you are copying the file from a different directory, enter the following command, substituting the directory in which the file currently resides for <directory name>:

   cp /<directory name>/hp_ltt<xx>.tar /tmp

4. Un-tar the L&TT tar file:

   tar –xvf hp_ltt<xx>.tar

5. Run the installation script in the /tmp directory:

   ./install_hpltt

6. After the software is successfully installed, enter the following commands to remove the temporary files from the installation process:

   cd /tmp

   rm –rf install_hpltt

   rm –rf HPLTT<xx> (where <xx> is the version number)

1. Log in to the Mac GUI using root or full system privileges.

2. Download or copy the install file to a temporary location. The install file is hpltt_<xx>_mac.dmg (where <xx> is the version number).

3. Double-click the downloaded file. This action will mount the image.

4. Double-click the hp_ltt<xx>.mpkg icon.

5. Follow the screen instructions.

6. On completion, click the finish button.