Quantum DLT 7 Manual descarregar pdf (Página 139)

Chapter 13 Using the Tape Drive

Optimizing Tape Drive Performance

DLT-S4 Product Manual 121

Cycle Time for Cleaning

Cartridge

Cycle times for cleaning cartridges are as follows.

On the last (20th) pass, the cleaning process completes and the cleaning

media is rewound, but the cleaning cartridge is not ejected. You must

manually eject the cartridge.

If the cleaning cartridge is loaded again after the 20th pass, it winds all

the way to the end of the cartridge and back again without performing

the cleaning sequence, and the cleaning cartridge does not eject. You

must manually eject the cartridge.

Optimizing Tape Drive Performance 13

Many factors contribute to tape drive performance. Host system

considerations include processor speed, block size, host adapter

performance, host bus configurations, and software.

If you are concerned about the performance of the tape drive, check the

following:

• Ensure that the tape drive is properly defined for the host system.

If the tape drive is not defined within the system, the host adapter

does not interact well with the tape drive.

• Ensure that the host bus adapter card and the SCSI bus are operating

in Ultra320 mode.

Cycle Time Value

a. These times are accurate to ± 20 seconds.

Shortest cycle time

(1st pass of cleaning cartridge)

2 minutes, 55 seconds

Longest cycle time

(20th pass of cleaning cartridge)

10 minutes, 20 seconds

“Expired” cycle time

(expired cleaning cartridge)

10 minutes

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Quantum DLT 7 Manual Página 139