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16 Setting Functions/SCSI ID

•Background Formatting

This unit is equipped with a background formatting function. To improve the reliability of writing data, executing a physical format before using an unused disc is highly recommended. If you disable the background formatting function, you can start the physical format in the foreground by issuing the FORMAT command. During the format, the unit scans whole sectors of the disc to detect any defect sectors and register them as defective sectors. It takes around 80 minutes to complete. If you enable the background formatting function, the unit starts the physical format automatically in the background without having to receive the FORMAT command. Therefore, you can even read and write data during the format. It takes at least 135 minutes to complete.

Cautions•Background Formatting Precautions

Never turn off the unit without making sure that the disc is removed when the disc is in the background formatting process. The unit may not write data properly and mark them as the defective sectors if you turn off the unit without ejecting the disc during the background formatting. Before turning off the unit, be sure to eject the disc using the EJECT command or pressing the eject button.

•Inhibit Verify

Using a physical formatted disc is highly recommended if you inhibit verify for writes. Although disable verify for writes quicken the write transfer rate, but may reduce the reliability of written data. Even if you inhibit verify for writes, if the disc is not physical formatted, the drive forces verify for all write operations.

•Write Cache Precautions

This unit is equipped with a write cache function. When the write cache is enabled, never turn off the unit power without making sure that all data has been written to the disc from the cache memory. Data will be lost if you turn off the power before all data in cache memory has been written to the disc.

Before turning off the unit power, be sure to eject the disc, as this writes data from cache memory to the disc. Further, even though the unit will periodically flush data from cache memory periodically to the disc, data may be lost in the case of a power failure.