Manual for N8151-34B/N8151-46A

Manual for N8151-34B/N8151-46A

Brand: NEC

Category: Other

Document Type: Manual

Language: EN

Available Languages: EN , ES

Uploaded: Nov. 21, 2025, 8:08 p.m.

Manual Publish Date: 2003-10-01

Warranty Information

The warranty period is 5 years from the manufacturing date.

Storing Important Data

Prepare and store master and copy (backup) tapes for important data and programs. Verify backup software and saved data. If one tape has a read error, data can be recovered from the other.

Managing 3-generation Data

Use three tapes (A, B, C) for data storage. Store data on disk in tape A on day 1, tape B on day 2, and tape C on day 3. This protects data if one tape fails.

Data cartridge storage

Store cartridges in a clean location under specified conditions. Enabling write-protect is recommended. Periodically read cartridges for extended storage. Store master and spare cartridges in different locations.

Establishing backup and disaster recovery procedures

Schedule image disaster recovery and establish appropriate backup procedures. Periodically verify the disaster recovery procedure to ensure it works correctly.

Troubleshooting and error codes

No. Symptom Internal/External Action
1 The drive does not turn on.
The LED does not light.		 Make sure that the DC cable is correctly connected to the drive.
Some integrated drives have two power connectors (some drives require a special DC cable). Check the User's Guide and make sure that the drive is correctly plugged into a power outlet.
Check the power contacts of the DC cable by unplugging the cable and then plugging it back.		 Make sure that the AC cord is correctly connected to the drive.
Make sure that the AC cord is correctly plugged into the power outlet.
Make sure that the DC cable is correctly connected to the drive.
Some integrated drives have two power connectors (some drives require a special DC cable). Check the User's Guide and make sure that the drive is correctly plugged into a power outlet.
Check the power contacts of the DC cable by unplugging the cable and then plugging it back.		 Make sure that the AC cord is correctly connected to the drive.
Make sure that the AC cord is correctly plugged into the power outlet.
2 The drive is not properly detected during startup. Make sure that the SCSI cable is correctly connected to the drive.
Make sure that the SCSI cable is correctly connected to the SCSI connector (SCSI board connector, motherboard connector, etc.).
Make sure that there is no other drive on the SCSI bus with the same SCSI ID.
→ If you find a drive with the same SCSI ID, change the ID of one of the drives to an ID that is not currently in use. (Do not use “7”, as this ID is assigned to the host.)		 Make sure that terminators are connected and/or set correctly.
→ Terminators must be connected at both ends of the SCSI bus.
• If the remote end of the SCSI bus is a cable (connector), make sure that a terminating connector is connected to it.
• If the remote end of the SCSI bus is an internal drive, make sure that the drive terminator setting is ON.
• If the remote end of the SCSI bus is an external drive, make sure that a terminating connector is connected to it.
• If the remote end of the SCSI bus is a SCSI board or motherboard, make sure that the SCSI BIOS is set up correctly. (Refer to the appropriate documentation for details.)
• Make sure that the terminator setting is OFF for any drive that is not at the remote end of the SCSI bus.
If the SCSI connector is a pin-type connector, make sure that none of the pins are bent (internal drive 50-pin connector, internal or external cable 68-pin connector, external cable 50-pin [PIN type] connector, etc.).
→ If pins are bent, do not try to bend them back into position. Replace the drive or cable.
Make sure that the SCSI BIOS is correctly set up. (Refer to the setup procedures in the appropriate documentation, if available. Some SCSI BIOS are designed not to allow changes.)
Make sure that the drive is connected in the proper position according to the system configuration.
Make sure that the SCSI cable is correctly connected to the drive.
Make sure that the SCSI cable is correctly connected to the SCSI connector (SCSI board connector, motherboard connector, etc.).
Make sure that there is no other drive on the SCSI bus with the same SCSI ID.
→ If you find a drive with the same SCSI ID, change the ID of one of the drives to an ID that is not currently in use. (Do not use “7”, as this ID is assigned to the host.)		 Make sure that terminators are connected and/or set correctly.
→ Terminators must be connected at both ends of the SCSI bus.
• If the remote end of the SCSI bus is a cable (connector), make sure that a terminating connector is connected to it.
• If the remote end of the SCSI bus is an internal drive, make sure that the drive terminator setting is ON.
• If the remote end of the SCSI bus is an external drive, make sure that a terminating connector is connected to it.
• If the remote end of the SCSI bus is a SCSI board or motherboard, make sure that the SCSI BIOS is set up correctly. (Refer to the appropriate documentation for details.)
• Make sure that the terminator setting is OFF for any drive that is not at the remote end of the SCSI bus.
If the SCSI connector is a pin-type connector, make sure that none of the pins are bent (internal drive 50-pin connector, internal or external cable 68-pin connector, external cable 50-pin [PIN type] connector, etc.).
→ If pins are bent, do not try to bend them back into position. Replace the drive or cable.
Make sure that the SCSI BIOS is correctly set up. (Refer to the setup procedures in the appropriate documentation, if available. Some SCSI BIOS are designed not to allow changes.)
Make sure that the drive is connected in the proper position according to the system configuration.
3 The drive is not properly detected after OS startup. (The drive was properly detected during startup.) Make sure that the device driver is installed correctly.
→ In some cases, the device driver may be installed automatically. In other cases, it may be necessary to install the device driver manually. In still other cases, the device driver may be incorporated into the product. Refer to the User's Guide for details.
Make sure that the device driver started correctly.
Make sure that the device driver is installed correctly.
→ In some cases, the device driver may be installed automatically. In other cases, it may be necessary to install the device driver manually. In still other cases, the device driver may be incorporated into the product. Refer to the User's Guide for details.
Make sure that the device driver started correctly.
4 The cartridge is not detected correctly.
The backup process is not performed correctly. (The backup software correctly detected the drive.)		 Clean the head with the cleaning cartridge.
Replace the data cartridge with a new cartridge.
Make sure that you are using the correct data cartridge.
→ • Make sure that you are using a correct drive and cartridge combination, for example that you are not using a DDS3 cartridge in a DDS2 drive.
• Make sure that you are using a type of cartridge for which operation is guaranteed (EF-type cartridge, etc.).
• Make sure that you are not using a cartridge that has reached the end of its operational life.
• Make sure that you are not using a cartridge on which there are errors.
There may be a problem at a one or more of the following connections: SCSI cable, connector, the terminator, etc.
→ Check the connections.
If the drive was moved to an environment with different temperature and/or humidity, the drive may not have fully adapted to its new environment. Allow the drive time to adapt to the new environment before using it.
If the backup process is initiated immediately after system startup in an environment that is not air-conditioned, the drive may not have fully adapted to the environment. Modify the operating procedures so that the drive is allowed to time to adapt before beginning the backup process. (This problem frequently occurs when the system starts up in the middle of the night and begins the backup process.)
5 The backup process is not performed correctly. (The backup software does not correctly detect the drive.) Make sure that the backup software is installed correctly.
Make sure that there is no other device on the SCSI bus with the same SCSI ID.
Make sure that there are no software conflicts.
→ If there are incompatible device drivers installed on the system, it may be necessary to remove some of the drivers. Refer to the appropriate software documentation for details.
There may be a problem at a one or more of the following connections: SCSI cable, connector, the terminator, etc.
Check the connections.
6 The backup process is not performed correctly. (An LED is flashing and an error is displayed on the LCD.) Refer to the explanation of the LED and LCD indicators (if any) in the User's Guide.
→ • If a cleaning request is indicated, clean the drive and attempt the backup process again. If the same error occurs again, replace the data cartridge.
• If an error is indicated (ERRxx, for example), there may be a problem with the drive. Replace the drive.
7 Cannot eject the data cartridge. If the cartridge is not ejected even though the automatic ejection setting is made in the backup software, the backup process may not have been performed correctly.
→ See numbers 4 through 6.
If the cartridge is not ejected even though the EJECT button is pressed, the EJECT function may be locked by the backup software.
→ • Exit the backup software.
• Restart the system.
• Turn the power off, and then turn it on again.
The drive may have detected a problem and is not allowing the cartridge to be ejected.
→ • Some drives eject the cartridge when you press and hold the EJECT button for a certain time (five or ten seconds).
• Restart the system.
• Turn the power off, and then turn it on again.
The cartridge may be jammed in the drive. (Even if you press the EJECT button longer than the prescribed time.)
→ • If a cartridge jams in a drive, the head, drum, or various guide pins may be damaged. Replace the drive.
8 Cannot eject the cleaning cartridge. If a spent cleaning cartridge is inserted, or if cleaning is not completed properly because the cartridge ends during cleaning, some drives indicate this by not ejecting the cleaning cartridge.
→ Press and hold the EJECT button to eject the cleaning cartridge, and then clean again with a new cleaning cartridge.
The cartridge may be jammed in the drive. (Even if you press the EJECT button longer than the prescribed time.)
→ • If a cartridge jams in a drive, the head, drum, or various guide pins may be damaged. Replace the drive.
9 The cartridge magazine is not ejected. Make sure that the TAPE MOTION LED is not blinking.
The unit may still be reading data to tape. Wait until the reading is done. If a reading error occurs, replace the tape.
10 The data cartridge is ejected. Make sure that you are using the correct type of data cartridge.
→ • Make sure that you are using a correct drive and cartridge combination, for example that you are not using a DDS3 cartridge in a DDS2 drive, or an AIT2 cartridge in an AIT1 drive.
• Make sure that you are using a type of cartridge for which operation is guaranteed (EF-type cartridge, etc.).
• Make sure that you are not using a cartridge that has reached the end of its operational life.
• Make sure that you are not using a cartridge on which there are errors.
The head may be dirty.
→ If the head is dirty, a read/write error may occur, after which the cartridge is ejected. Clean the drive.
11 The cleaning cartridge is ejected. The cleaning cartridge may be spent.
→ Replace the cleaning cartridge with a new cleaning cartridge.
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