Appendix G: Disaster Recover; Overview; Creating Disaster Recovery Tape; Configuring The Drive For Disaster Recovery Operation - Sony SDX-900V Product Specifications

14. APPENDIX G: DISASTER RECOVER

14.1. Overview

This chapter will outline the Disaster Recovery Firmware Specifications for Sony AIT drive and autoloader. This is
applicable only to Windows NT/2000 Operating System. While in Disaster Recovery mode, the drive behaves as a
bootable CDROM device. Using the DR tape image, users will be able to do a complete restore of the system.

14.2. Creating Disaster Recovery Tape

The Disaster Recovery tape must have the CDROM image of the operating system written first on the tape. This
image is formatted in El Torito CDROM Boot Specification.
Disaster Recovery Tape can be created using Veritas BackupExec Software. Please follow instructions of Veritas
BackupExec to create the DR tape. After the tape has been created, the tape must be write-protected to be
considered DR tape.

14.3. Configuring The Drive For Disaster Recovery Operation

To enter DR mode, the tape drive needs to be configured with the following steps:
1. Insert a write-protected DR tape and wait for the drive to complete the loading sequence.
2. Observe the simultaneous flashing all LED. This is the DR standby mode. The drive will remain in this mode
for a period of 15 seconds. Powering down the drive during this 15 seconds window will trigger the DR
mode. The drive will exit the DR standby mode after 15 seconds and resume normal mode of operation. A
SCSI reset will force the drive to exit the DR standby mode and service the SCSI reset.
3. Upon power up, the drive will enter the DR mode. Observe the simultaneous flashing LEDs of TAPE
MORTION and CLEANING REQUEST. While in DR mode, a SCSI RESET will be treated as soft reset and
will not take the drive out of DR mode.
Also, the drive will enter DR mode upon receiving a Mode Select command with Page Code 0x3C.

14.4. Exiting DR Mode

Ejecting the media via the front panel button or a SCSI UNLOAD command will exit the DR mode and restore the
drive to normal operation. A SCSI Mode Select command with Page Code 0x3C and DREnable bit of zero will also
exit the drive out of DR mode. On the autoloader, the DR mode indication on the 4th line of the LCD will disappear
once the drive exits from DR mode.

14.5. Supported CDROM DR Command Set

14.5.1. Inquiry (12h)

5.1.1. Peripheral Device Type = 0x05 (CDROM)
5.1.2. Byte 43 = 0x24 (ASCII "$")
5.1.3. Byte 44-48 = "DR-10"

14.5.2. Read 10 (28h)

This command shall only be supported in DR mode. Execution of this command is in effect a translation of a
LOCATE command and READ 6 (0x08) command executing in sequence.

14.5.3. Read Capacity (0x25)

This command shall only be supported in DR mode.
5.3.1. Returned LBA (Capacity) = 0004B000h (~640 Mbytes)
5.3.2. Block Length
SONY AIT-4 drive SDX-900V series Ver.2.1
= 00000800h (2048 Bytes)
14. Appendix G
14-1