Dell PowerVault LTO4-120 User Manual - Page 31

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Troubleshooting: Dell™ PowerVault™ LTO4-120 Tape Drive User's Guide

Obtaining Drivers and Firmware Upgrades

Selecting a Diagnostic or Maintenance Function

General Guidelines

Methods of Receiving Errors and Messages

Descriptions and Corrective Actions

Fixing SAS Connectivity Problems

Resolving Media-Related Problems

Removing an Internal SAS Drive

TapeAlert

Recovering a Tape Cartridge

Obtaining Drivers and Firmware Upgrades

NOTICE: When updating firmware, do not power off the tape drive until the update is complete, or the firmware may be lost.

Periodically check for updated levels of firmware by visiting the Web at support.dell.com.

Selecting a Diagnostic or Maintenance Function

The tape drive can run diagnostics, test write and read functions, test a suspect tape cartridge, and perform other diagnostic and maintenance functions. The

drive must be in maintenance mode to perform these functions. To place the drive in maintenance mode and select a diagnostic or maintenance function, see

Table

NOTE: The host interface on this tape drive is Serial Attached SCSI (SAS). This interface presents SCSI protocol to the tape drive. In this User's Guide,

references to SCSI relate to SCSI protocol, not the serial interface that it is transmitted over.

NOTE: Maintenance functions cannot be performed concurrently with read or write operations. While in maintenance mode, the tape drive does not

accept SCSI commands from the system. Close all tape drive applications before entering maintenance mode.

Table 3. Diagnostic and Maintenance Function Codes and Descriptions

Function Code 1 — Run Tape Drive Diagnostics

Causes the tape drive to run self tests.

Attention: Insert only a scratch data cartridge for this test. Data on the cartridge will be overwritten.

1. Ensure that there is no cartridge in the drive.

2. Press the eject button three times within an interval of 2 seconds. The status light becomes solid amber, which means that the drive is in

maintenance mode.

3. Press the eject button once per second until

it redisplays.

4. To select the function, press and hold the eject button for 3 seconds. After you select the function,

approximately 90 seconds, then

5. Within 60 seconds, insert a scratch data cartridge that is not write-protected.

NOTE: If you wait longer than 60 seconds to load a cartridge, the drive will automatically exit maintenance mode. If you insert a write-protected

cartridge, the tape drive will display a

drive will exit maintenance mode.

After you insert the cartridge,

If the diagnostic completes successfully, it begins again and runs for a maximum of ten times. Each loop takes approximately 20 minutes to run.

After the tenth loop, the diagnostic stops and automatically exits maintenance mode.

If the diagnostic fails, the status light flashes amber and an error code displays. Once the cartridge is manually ejected and removed, the tape

drive exits maintenance mode.

To halt the diagnostic at the end of the current 20-minute test loop, press the eject button once. The drive acknowledges the request by

slowing the length of time that the currently displayed character flashes on the single-character display (from twice per second to once per

second). The diagnostic continues to the end of its loop and then stops. The tape drive rewinds, unloads the cartridge, and exits maintenance

mode.

To halt the diagnostic immediately and terminate the test that is running, press the eject button twice. The tape rewinds, unloads the

cartridge, and exits maintenance mode.

Function Code 2 — RESERVED (Service Function)

Function Code 3 — RESERVED (Service Function)

Function Code 4 — Force a Dump of Vital Data to Tape Drive Memory

Causes the tape drive to perform a collection (or dump) of vital technical data and save it to drive memory. (A drive dump is also known as a save of the

firmware trace.)

appears in the single-character display. If you cycle past

flashes. When

flashes, the drive is waiting for a cartridge.

and retain the cartridge until it is manually ejected. Once the cartridge is ejected and removed, the tape

flashes and the test begins.

, continue to press the eject button until

flashes, the drive runs diagnostics for