Cleaning LED Is on, Slow Performance | Tandberg Data LTO-1 HH

Tandberg Data	Troubleshooting

6.6.9 Cleaning LED Is ON

The Cleaning LED will go ON 100 hours after the last cleaning operation or after an unrecoverable read or write error. Unrecoverable read or write errors may have been caused by debris on the read/write head. If the Cleaning LED was switched ON by the 100 hours function, the drive will function as normal with the Cleaning LED is on. Cleaning is always recommended when the Cleaning LED is ON.

1.Run cleaning operation with cleaning tape.

The Cleaning LED indicates that the drive needs cleaning due to elapse of 100 hours since last cleaning or a hard Write /Read error occurred that may be caused by debris on the head(s).

2.If the Cleaning LED is still On after running the cleaning operation, check for expired cleaning tape.

A cleaning tape can be used 50 times. If an expired cleaning tape is used, the drive ejects the cleaning tape and the Cleaning LED stays lit.

6.6.10 Incorrect Data Compression

1.Check if data is already compressed

Data may have been compressed by software in the host computer.

In some cases data will actually expand when subjected to the compression. This may for instance be the case when sending already compressed data to the drive and the compression option is enabled. In this case the drive automatically turns compression on and off to optimize the data storage.

Important: Tandberg LTO HH has compression ON by default. The compression can be turned OFF by using the SCSI Mode Select command.

2.Turn OFF any software compression in use.

The compression is done in the Tandberg 200LTO, LTO-2 HH`s hardware. Therefore any other compression software in the host or on the host bus adapter should be turned off.

The data is compressed using the SLDC (Streaming Lossless Data Compression) algorithm that is based on ALDC (Adaptive Lossless Data Compression). The SLDC format is defined in the ECMA-321 standard. Two enhancements are introduced:

•Uses two methods to reduce expansion of uncompressible data.

•Uses embedded code words.

6.6.11 Slow Performance

1.Check that the software driver used for the Tandberg LTO HH is the latest version.

Running without or with wrong software driver can cause the drive to run with low performance due to wrong block size and buffer usage.

2.Clean the tape drive.

3.Perform a Drive Diagnostics test (see Section 6.4).

6.6.12 Intermittent Failures

If the drive fails intermittently:

1.Clean the tape drive.

2.Check the SCSI termination on the SCSI Bus.

3.Check the operating system logs for any errors.

Tandberg LTO HH Installation and User Manual

LTO-1 HH, LTO-2 HH, LTO-3 HH specifications

Tandberg Data has long been recognized as a leading provider of innovative data storage and backup solutions, and their tape drives, specifically the LTO-1, LTO-2, and LTO-3 Half Height (HH) models, represent a significant advancement in data storage technology. These systems are designed to meet the demands of modern data management, balancing capacity, speed, and reliability.

The LTO-1 HH, introduced in 2001, marked a groundbreaking step in the linear tape-open (LTO) technology. It offered a native storage capacity of 100 GB and a compressed capacity of up to 200 GB. The tape drive featured a data transfer rate of 20 MB/s, allowing for efficient backup processes. One of the key technologies in the LTO-1 was its use of ultral Linear Tapes, which helped in maintaining the integrity of data over extended periods. The built-in data compression capabilities also contributed to the efficient storage of large volumes of data, making it suitable for small to medium-sized businesses.

Building on the success of the LTO-1, the LTO-2 HH was launched, significantly enhancing performance with a native capacity of 200 GB and a compressed capacity of up to 400 GB. The data transfer rate improved as well, reaching 40 MB/s. The LTO-2 introduced the concept of WORM (Write Once, Read Many) technology, which added a layer of security by ensuring that data could not be tampered with after being written. This was particularly important for industries requiring regulatory compliance. Enhanced error correction and data integrity features were also hallmarks of the LTO-2, ensuring reliable long-term data storage.

The LTO-3 HH followed suit with even greater advancements, providing a native capacity of 400 GB and a compressed capacity of 800 GB, along with a data transfer rate of up to 80 MB/s. Its improved track layout and data encoding methods further enhanced performance and reliability. Additionally, LTO-3 introduced the partitioning feature, which divided the tape into virtual partitions for more efficient data management, allowing users to access data faster. The data encryption capabilities introduced with LTO-3 provided enhanced security, protecting sensitive data during backup and storage.

Together, these Tandberg Data LTO tape drives showcase a remarkable evolution in data storage technology, offering robust solutions that cater to businesses of all sizes. Their reliability, security features, and substantial data capacities ensure that organizations can efficiently manage their growing data storage needs in an increasingly digital world.