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Specification of HP DDS tape drives
Performance specifications apply when using data compression.
Power specifications are measured at the tape drive power
connector and are nominal values.
The compression ratio and transfer rate achievable in any
particular case depend on the characteristics of the data being
compressed.
Nominal capacities
Transfer rates
Unrecoverable errors
Recording format
Power specification
10 HP DDS DRIVES USER GUIDE
60-metre cassette
(DDS)
90-metre cassette
(DDS)
120-metre cassette
(DDS-2)
125-metre cassette
(DDS-3)
DDS
DDS-2
DDS-3
1
Nominal maximum only; can be exceeded for highly-compressible data.
Note DDS-3 standard is only on the DDS-3 drive.
Voltage
Ripple
Current (operational)
Current (peak)
1.3 Gbyte (1:1 base)
2.6 Gbyte (2:1 typical)
5.2 Gbyte (4:1 max
1
)
2.0 Gbyte (1:1 base)
4.0 Gbyte (2:1 typical)
1
8.0 Gbyte (4:1 max
)
4.0 Gbyte (1:1 base)
8.0 Gbyte (2:1 typical)
16.0 Gbyte (4:1 max
12.0 Gbyte (1:1 base)
24.0 Gbyte (2:1 typical)
366 Kbyte/s (1:1 base)
732 Kbyte/s (2:1 typical)
1464 Kbyte/s (4:1 max
400 Kbyte/s (1:1 base)
800 Kbyte/s (2:1 typical)
1608 Kbyte/s (4:1 max
1000 Kbyte/s (1:1 base)
2000 Kbyte/s (2:1 typical)
15
Less than 1 in 10
data bits
ANSI/ECMA (DDS-DC, DDS-2/3)
+12 Vdc ± 10%
+5 Vdc ± 5%
+12 V: <=150 mVp-p
+5 V: <= 150 mVp-p
0.4 A @ +12 Vdc, 0.8 A @ +5 Vdc
0.9 A @ +12 Vdc, 1 A @ +5 Vdc
1
)
1
)
1
)
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