Chapter 1 System Overview 1-31

1.3.9.3 Tape Drive Unit

The tape drive unit in both midrange servers is an optional component. TABLE1-12
lists the features, location, and specifications of the optional tape drive unit.
Contact your sales representative for tape drive unit options on M4000/M5000
servers.
1.4 I/O Options

1.4.1 External I/O Expansion Unit

Youcan purchase an optional External I/O Expansion Unit to add I/O capacity to
the server.For more information, refer to the External I/O Expansion Unit Installation
and Service Manual.

1.4.2 PCI Cards

Each PCI card in the server must be mounted to a PCI cassette beforethe card can be
inserted into the I/O unit slot. For moreinformation, see Section 1.3.8, “I/O Unit” on
page1-26.
TABLE1-12 Tape Drive Unit Features and Specificationsfor Both Midrange Servers
Feature Quantity,Location, and Specifications
Number of tape drive units 1 (optional)
Location Frontof server
Cold FRU replacement capability Yes
Tapedrive unit type Digital audio tape (DAT)drive
Data transfer rate About 6 MB/s
Capacity 36Gbytes of data (non compressed format)
72 Gbytes of data (double-compressedformat)
Media type Sequential access
Transferrate 150 MB/s or faster