QuickSpecs
Compaq 4/8-GB DAT Drive

Models

4/8-GB DAT Drive
295353-B22 (Opal Bezel Color)

Next-generation DAT drive utilizes DDS2 technology to perform up to 25 percent faster, and a new mechanism reduces the need for cleaning. Protects servers up to 8 GB in capacity

Improved Reliability
New advancements in tape technology have produced a tape drive which requires less cleaning and provides improved backup/restore operation.

Improved Performance
This new version of the industry-standard DDS-2 DAT Drive provides a Maximum 3.6 GB per hour data transfer rate, which is up to 25 percent greater than other DDS-2 drives.

Industry-Standard DDS-2
DDS-2 format with increased capacity and over twice the data-transfer rate of DDS1 drives; compatible with DDS1 tapes to read and write to DDS1

Compression
Built-in hardware compression

Compatibility and Integration Testing
Fully tested on a variety of Compaq products, including Prosignia and ProLiant Systems

Operating Environment Support
Microsoft Windows NT
Supported under Microsoft Windows NT using the Windows NT 4.0 Backup utility supported using Computer Associates ARCserveITŇ 6.61 and higher for NT or VERITAS  Backup Exec 7.3 and higher for NT
Novell NetWare
Supported under NetWare 3.x and higher using Computer Associates ARCserveIT 6.61 and higher or VERITAS Backup Exec 8.0 and higher
SCO UNIX
Native support under SCO OpenServer v 5.x UnixWare v 7.x
Option Kit Contents
DAT Drive
4-GB DDS2 DAT Cassette
Cleaning Cassette
Mounting Bracket
Documentation

Specifications

Warranty
Maximum
The remaining warranty of the Compaq PC product in which it is installed (to a maximum three-year1 limited warranty)
Minimum
Three-year parts, one-year, 24-hour swap
Recommended Maximum Server Size
< 8 GB2
Capacity
Native
2-1 DC
60 Meter (DDS-1)
1.3 GB
2.6 GB
90 Meter (DDS-1)
2 GB
4 GB
120 Meter (DDS-2)
4 GB
8 GB
Transfer Rates
Native (maximum)
1.8 GB/hour
Native (typical)
1.4 GB/hour
2:1 Compression (maximum)
3.6 GB/hour
2:1 Compression (typical)
2.8 GB/hour
Data Access Time
Average load/unload swap time
<14 seconds
Search Speed
Average of 40 seconds to any point on a 120-meter tape
Physical Dimensions
5.25 inch Half Height

Tape Width
Tape Length
1.6 H, 4 W, 5.9 D (inches)
41 H, 102 W, 150 D (mm)
0.15 in/3.81 mm
393 ft/120 m
Tape Format
Recording Method
Helical Scan
Recording Format
ANSI/ECMA DDS-DC
Data Compression
Lempel-Ziv (DCLZ)
Error Detection/Correction
Reed Solomon (3 levels)
Related Options

DAT Cleaning Cassette
242781-001

External SCSI Storage Expander
142185-002

Rack Mount SCSI Storage Expander
165620-002

4.0-GB DDS2 DAT Cassette
137611-001

Certain restrictions and exclusions apply. Consult the Compaq Customer Support Center for details.
Typically, users will be able to compress their data at a 2:1 ratio; however, compression ratios will vary based on the type of data being compressed.