HP DAT8 (C1533a / c1528a) DDS2

The HP DDS-format drives have been developed by Hewlett Packard for data storage drives that build on DAT technology. The DDS-2 drive has 4-GB native capacity, yielding up to 8 GB of stored data and has data compression functionality.

The HP C1539A implements the DDS-2 format. This includes all of the features of the DDS-1 and DDS-DC formats, plus the ability to read and write with much higher


• Reads and writes using DDS-1 and DDS-DC formats when using DDS-1 media
(60 m and 90 m). Has all of the features of the DDS-1 and DDS-DC formats.

• Reads and writes with much higher capacity when using DDS-2 media (120 m).
DDS-2 Drive Environmental Requirements
The DDS-2 drive has the following environmental requirements:

• Ambient Temperature
Operating 5 C to 40 C (41 F to 104 F) Non-Operating –40 C to 70 C (–40 F to 158 F)

• Altitude
Operating 0 km to 4.6 km (0 to 15,000 ft) Non-Operating 0 km to 15.2 km (0 to 50,000 ft)

• Humidity
Operating 20% to 80%RH (non-condensing) Non-Operating 5% to 95%RH (non-condensing) Maximum wet bulb temperature = 26 C

HP C1533A Specifications
Capacity4 GB native (8 GB with hardware data compression)
Recording FormatANSI/ISO/ECMA DDS, DDS-DC, DDS-2 and DDS-3
Compression TechniqueDCLZ
Backup rate, compressed3.6 GB/hr*
Backup rate, native1.8 GB/hr
Burst Transfer Rate3 MB/sec. max (asynchronous)10 MB/sec. max synchronous
MediaDDS-2 (8GB*), DDS-1 (4GB*), DDS-1 (2.6 GB*)
InterfaceSingle-ended narrow SCSI-2
Power RequirementsDAT 8i: +5V DC, 0.8 A; +12V DC, 0.1 ADAT 8e: 100-240V. 0.5 A, 50-60 HzDAT 8eU: 100-240V, 0.8 A, 50-60 Hz
MTBFDAT 8i: 300,000 hours at 12% duty cycleDAT 8e: 200,000 hours at 12% duty cycle
* Capacities and transfer rates assume 2:1 data compression. Actual compression may differ because compression varies with data type.


Chris Whitehead

Chris Whitehead is a tape drive repair and data storage expert based in Reading, Berkshire, providing tape drive repair and data storage solutions across the UK.