HP LTO 4 SAS, LTO 4 FC, LTO 4 SCSI manual

Page 83

	Flag	Type	Set	Recommended Host Message		Cause
24	Retension	W		The tape drive has requested a		The drive is having trouble
	requested			retension operation.		reading or writing that will
						be resolved by a retension
						cycle.

25	Dual-port	W		A redundant interface port on the		One of the interface ports in
	interface error			tape drive has failed.		a dual-port configuration (in
						other words, Fibre Channel)
						has failed.

Flags for Tape Drive Hardware Errors

26	Cooling fan	W		A tape drive cooling fan has failed.		A fan inside the drive
	failure					mechanism or enclosure has
						failed.

27	Power supply	W		A redundant power supply has failed		A redundant PSU has failed
	failure			inside the tape drive enclosure.		inside the tape drive
				Check the enclosure user’s manual		enclosure or rack subsystem.
				for instructions on replacing the
				failed power supply.

28	Power	W		The tape drive power consumption is		The tape drive power
	consumption			outside the specified range.		consumption is outside the
						specified range.

29	Drive	W		Preventive maintenance of the tape		The drive requires preventive
	maintenance			drive is required.		maintenance (not cleaning).
				Check the tape drive user’s manual
				for preventive maintenance tasks or
				call the tape drive supplier’s helpline.

30	Hardware A	C		The tape drive has a hardware fault:		The drive has a hardware
				1. Eject the tape or magazine.		fault from which it can
				1. Eject the tape or magazine.		recover through a reset.
				2.	Reset the drive.	recover through a reset.
				2.	Reset the drive.
				3.	Restart the operation.

31	Hardware B	C		The tape drive has a hardware fault:		The drive has a hardware
				1. Turn the tape drive off and then		fault that is not read/write
				1. Turn the tape drive off and then		related or that it can recover
					on again.	related or that it can recover
					on again.	from through a power cycle.
				2.	Restart the operation.	from through a power cycle.
				2.	Restart the operation.	The flag is set when the tape
				3. If the problem persists, call the		The flag is set when the tape
				3. If the problem persists, call the		drive fails its internal
					tape drive supplier’s helpline.	drive fails its internal
					tape drive supplier’s helpline.	power-onself-tests. It is not
						power-onself-tests. It is not
						cleared internally until the
						drive is powered off.

HP LTO Ultrium 4 drives technical reference manual, volume 2: software integration 83 HP restricted

Image 83

Contents HP restricted volume 2 software integrationLTO 4 FC, SCSI and SAS drives HP LTO Ultrium tape drives technical reference manualLegal and notice information 3 Use of tapes Contents1 Designing backup applications 2 Configuration and initialization4 Factors affecting performance 5 Supporting Ultrium features7 Exception handling 6 Sense keys and codesHP restricted Drives-general Related documentsDocumentation map Documents specific to HP Ultrium drivesInterface Installation and configurationOperation CartridgesDealing with errors Maintenance and troubleshootingGeneral documents and standardization LTO Ultrium featuresLarge data transfer size 1 Designing backup applicationsNon-immediate commands Optimizing performanceMonitoring tape use Cleaning tape headsManaging the use of tapes Information in Cartridge MemoryDisplaying drive information Design goals for LTO backup applicationsDiagnostic logs TapeAlertInclude the capability to download firmware Operating system drivers 2 Configuration and initializationInquiry string recovery SCSI protocol, regardless of transport or interface type Example16 Configuration and initialization Supporting additional LUNs Support for additional LUNEnabling additional LUN support 18 Configuration and initialization LTO cartridge memory Using Cartridge Memory attributesUsing MODE SENSE 3 Use of tapesInterpreting Log Sense data Tape status and capacityFinding the remaining capacity CDB fields Using the SET CAPACITY commandCommand descriptor block New additional sense codes and TapeAlert flags Changes to SCSI commandsWORM media How WORM media worksRe-writing media labels Error Usage pageERASE commands rejected SET CAPACITY commandUnique media identifier Using CM to check tape integrityBehavior with a missing or inconsistent EOD value Barcode support Responding to Cartridge Memory dataLoad count Corrective action RWW retry countsEnsuring the recommended minimum transfer sizes 4 Factors affecting performanceWays of optimizing performance Detecting the drive’s speedMedia type identification Using Cartridge Memory instead of tape headersUsing the Performance Log page for diagnosing problems Time-out valuesHost-related factors Recommended support of log pagesFactors affecting performance makes sense to split heavily used FC cards across separate PCI busses ExampleRecommendation where possible or a reasonably sized RAID system. More disks meansDo not interleave write commands with other commands, such as READ Drive-related factorsFormat-related factors Page 34 Factors affecting performance Further information 5 Supporting Ultrium featuresCartridge Memory LTO-CM Automation interfaceAutomation/Device Interface ADI Slave to a library controller Automation Control Interface ACIModes of usage through ACI SCSI pass-through mode ACI command setACI commands that affect drive streaming performance Backward compatibility New features in ACISCSI command Encryption support 42 Supporting Ultrium features Further detailsSupporting the ACI protocol Recommended ACI time-out valuesTreatment of reserved fields Recommended power-up sequenceRecommended load-unload configuration Upgrading the drive firmware Firmware upgrade via tapeRecommended Get Drive Status polling frequency ACI protocol communications retryHandling irregular cartridges Firmware upgrade via the primary host interfaceFirmware upgrade via ACI Library firmware upgrade via tapeUnreadable data cartridge Cleaning cartridge HP-configured or UniversalExpired cleaning cartridge HP-configured or Universal Non-HP Ultrium 1 cleaning cartridgeCartridge cannot be loaded Valid firmware upgrade cartridgeData cartridge with unreadable CM Cartridge fails to seat or loadIs there separate firmware for drives intended to go into libraries? Frequently asked questionsCleaning Invalid firmware upgrade cartridgeResetting using the ACIRSTL line Backup softwareResetting drives Resetting via the ACI Reset commandBuffer size at EW-EOM Accessing Cartridge Memory without threading the tapeControlling data compression Other mode page information52 Supporting Ultrium features Rewind on resetWrite delay time Partition sizeConsole Message 6 Sense keys and codesSense keys-actions to take Actionerror to the calling application “3h-MEDIUM ERROR” on page 62 . Also see the Media AccessFor additional sense codes, see “3h-MEDIUM ERROR” on log the error, terminate I/O to the drive, and pass the appropriateConsole Message ActionConsole Message Actionpage reached, unable to fit Additional sense codes-actions to takePhysical End-of-Tape0h-NO SENSE 2h-NOT READY 1h-RECOVERED ERROR60 Sense keys and codes The software must issue a LOAD before media accessLUN not accessible, port in The command cannot be executed because the specifiedmechanism tests are being executed. When the tests are 62 Sense keys and codes 3h-MEDIUM ERRORA READ , SPACE , WRITE or WRITE FILEMARKS command and the drive. Based on this, ask the user to clean the Send a console message that an unrecovered error on64 Sense keys and codes Send a message to the console indicating that there is 66 Sense keys and codes The current command such as READ, SPACE, REWIND4h-HW ERROR 68 Sense keys and codes 5h-ILLEGAL REQUESTA MODE SELECT parameter list sent to the drive contains 32 initiators to register, using PERSISTENT RESERVE OUT 6h-UNIT ATTENTIONpersistent reservation using the PERSISTENT RESERVE OUT allowed to execute. In other words, some commands canAction A SET DEVICE IDENTIFIER command has been successful service action removed all reservations and the persistentA PERSISTENT RESERVE OUT command was executed WRITE BUFFER or MAINTENANCE OUT command7h-DATA PROTECTION Action 8h-BLANK CHECK related to a missing EOD data set. The most likely cause Bh-ABORTED COMMANDREAD BUFFER command 76 Sense keys and codes Dh-VOLUME OVERFLOWA WRITE or WRITE FILEMARKS command has encountered 4. Allow the user to reset devices Typical escalation procedure1. Retrieve fault information 3. Allow the user to try recoverySupporting TapeAlert Monitoring the condition of the drive and mediaType FlagsPage Page Page Page Page Page Page TapeAlert models Designing software to use the TapeAlert logTapeAlert informational exception usage model Reading the TapeAlert logTapeAlert polling usage model Supporting OBDR One-Button Disaster Recovery OBDRResponding to the ‘Clean’ LED Requirements for drivers and logical device managers Providing pass-through modeGlossary see ”read-while-write” Index Page Page HP restricted