Quantum Instruments DLT 7000 - Manual (Page 28)

General Description and Specifications
1-4 Quantum DLT 7000 Tape System
1.3.5 Performance Data
The following table provides performance data for the DLT 7000 tape system.
Table 1 −3 DLT 7000 Performance Data
Feature Description
Transfer Rate, User Native
Transfer Rate, Raw Native Transfer
Rate, Compressed 5.2 MB/second 6.8
MB/second Up to 10.0
MB/second *
Error Rates Recoverable READ Error Rate = 1 in 1x10 7
Detected, Uncorrected Error Rate = 1 in 1x10 17 bits
read
Undetected Error Rate =1 in 1x10
27 bits read
Recoverable WRITE Error Rate = 1 in 1x10 6
Tracks 208; 52 quads
Linear Bit Density 85,937 bpi per track
READ / WRITE Tape Speed 160 inches/second
Rewind Tape Speed 175 inches/second
Linear Search Tape Speed 175 inches/second
Average Rewind Time 60 seconds
Maximum Rewind Time 120 seconds
Average Access Time (from BOT) 60 seconds
Maximum Access Time (from BOT) 120 seconds if the tape directory on the tape is
valid. If the tape must be read from BOT to EOT,
maximum access time is 132 seconds.
Load to BOT (typical) 37 seconds – previously written (slightly longer if
using a blank tape)
Load to BOT (max time using V80
firmware or greater) 5.5 minutes with blank tape that fails calibration
(time includes calibration retries)
Unload from BOT 17 seconds
Nominal Tape Tension 3.0 +/- 1 oz. when stationery 4.7
+/- 1 oz. at operating speed
* = Depending on data type and SCSI bus limitations/system configuration.
Note that data is typical; times may be longer if error recovery time is needed.