User manual QUANTUM STT220000NX

[. . . ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . STT20000N, STT20000N-C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SCSI Minicartridge Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (standard and NS-20 versions) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . © 1998 Seagate Technology, Inc. All rights reserved No part of this publication may be reproduced in any form without written permission from Seagate Technology, Inc. [. . . ] Figure 4-4 shows the cartridge with the switch in the non-protected (read/write) or unlocked position. Figure 4-4 Write-protect switch in unlocked position Figure 4-5 shows the tab in the protected (read only) or locked position. Figure 4-5 Write-protect switch in locked position To return a cartridge to the "writeable" state, push the switch toward the end of the cartridge or to the unlocked position. . Loading revised firmware from a Seagate firmware cartridge The STT20000 SCSI minicartridge drive uses flash EEPROM. Flash EEPROM enables you to download new firmware when revisions to firmware are released. Firmware revisions are released on specially encoded cartridges that are automatically recognized by these drives. These firmware revisions are available for qualified OEMs only from Seagate Technology. To load a firmware upgrade tape, follow these steps. Power on the host system and the STT20000 drive. Allow the system boot up process to reach the point where there is no SCSI bus activity. STT20000N Product Manual Page 29 Chapter 4 2. Drive operation and maintenance Place the firmware upgrade cartridge record switch to the nonrecord position. Insert the firmware upgrade cartridge in the drive and observe the amber LED light on the front of the drive. 3. Once the upgrade cartridge is inserted, tape motion begins. Approximately 15 seconds later, tape motion stops, and the LED continues to flash. The LED flashes on and off at a steady rate as the firmware upgrade continues. Approximately 45 seconds later, the drive resets internally, and the tape moves back and forth, then stops. The LED light will go off and remain off. Make sure that there is not further tape motion. The firmware is now upgraded to the new revision. The drive is operational and the new firmware is active. Turning power off at this time does not affect the firmware revision level. Notes: Once the firmware upgrade cartridge is inserted in the drive, it is important that no power interruption occurs while the firmware is loading. DO NOT POWER OFF THE DRIVE AT THIS TIME. If a power interruption occurs, the firmware may not be loaded correctly, and the drive may not operate properly. If a problem occurs during the firmware loading process, the LED on the front panel goes out. In that case, the firmware upgrade cartridge may be defective, or the drive may not be operating correctly. [. . . ] End-of-Media (EOM)--Equal to the physical end of tape. End-of-Partition (EOP)--The position at the end of the permissible recording area of a partition. End of Tape (EOT)--Equal to the logical end of the tape. Error Correction Codes (ECC)--Information written on tape during the recording operation that can later be used to reconstruct errors during the data reading operation. [. . . ]