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SCSI Information

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In the event you find that your backups are not operating as expected, for example, lower than expected throughput or SCSI errors in your System Messages file, refer to the tables below to confirm your SCSI configuration.

SCSI Chart
PinsBus SpeedBitsThroughputMax. Cable Length
SCSI-1505 MHz85 MB/secSE - 6m
HVD - 25m
SCSI-2Fast5010 MHz810 MB/secSE - 3m
HVD - 25m
SCSI-2Wide685 MHz1610 MB/secSE - 6m
HVD - 25m
SCSI-2Fast Wide6810 MHz1620 MB/secSE - 6m
HVD - 25m
SCSI-3Wide Ultra6820 MHz1640 MB/secLVD - 12m
HVD - 25m
SCSI-3Wide Ultra26840 MHz1680 MB/secLVD - 12m
HVD - 25m
SCSI-3Ultra36840 MHz16160 MB/secLVD - 12m
SCSI-3Ultra3206880 MHz16320 MB/secLVD - 12m

Definitions

Single Ended (SE)

Differential (Diff)

Narrow devices

Wide devices

SCSI Rules