Technical data

2-2
Original XR Chassis
2
Figure 2-1. Model XR9103 (Front View)
Dual 9-slot System
The Model XR9209 dual 9-slot system (see Figure 2-2 on page 2-4)
is designed for telecom applications requiring dual, independent 9-
slot VME systems with up to 34GB of disk storage capacity per
system. The Model XR9109 is configured with one 9-slot VME
system, but it may be upgraded to a dual XR9209 configuration.
A Model XR9109 or XR9209 system typically uses a VME drive
module for the initial 3 1/2-inch disk and tape. Additional drives
are added using a SCSI Device Storage Module (see Chapter 4). Up
to four Storage Modules can be added to each system. Each Storage
Module contains up to four half-height drive bays. Two of these
bays can contain removable media devices. Each system can
support up to 18 SCSI drives.
The XR Series offers a -48 ±
10% (-36 to -72 with the MC1000K-
DC700A—see Chapter 7) VDC power module for telecom exchange
office applications as well as a 90 to 264 VAC autoranging power
11304.00 9601 (1-2)