Enable SCSI reserve

This property allows exclusive access protection for tape drives. With access protection, other host bus adaptors cannot issue commands to control the drives during the reservation.

SCSI reservations provide protection for NetBackup Shared Storage Option environments or any other multiple-initiator environment in which drives are shared.

The protection setting configures access protection for all tape drives from the media server on which the option is configured. You can override the media server setting for any drive path from that media server.

The following are the protection options:

The SCSI persistent reserve option provides SCSI persistent reserve protection for SCSI devices. The devices must conform to the SCSI Primary Commands - 3 (SPC-3) standard. SCSI persistent reserve is valid for NetBackup 6.5 and later servers only. If you enable SCSI persistent reserve, NetBackup does not send persistent reserve commands to NetBackup media servers earlier than release 6.5.
The SPC-2 SCSI reserve option (default) provides SPC-2 SCSI reserve protection for SCSI devices. The devices must conform to the reserve and release management method in the SCSI Primary Commands - 2 standard.
To operate NetBackup without tape drive access protection, clear the Enable SCSI reserve property. If unchecked, other HBAs can send the commands that may cause a loss of data to tape drives.

Note:

Ensure that all of your hardware processes SCSI persistent reserve commands correctly. All of your hardware includes Fibre Channel bridges. If the hardware does not process SCSI persistent reserve commands correctly and NetBackup is configured to use SCSI persistent reserve, no protection may exist.