9-4  Chapter 9, Mass Storage Configuration 
Addendum 108431-001 (11-88) to 
Manual No. 108033-003
Mirroring
IMPORTANT
Novell Netware software must be used when 
setting up the system for proper operation of 
the mirroring function.
Two possible mirroring configurations are  
currently supported by COMPAQ Computer  
Corporation. The first uses two 40-Megabyte 
internal half-height fixed disk drives as  
shown in Figure 9-2.
Figure 9-2.  Two Mirrored 40-Megabyte Internal Half-
Height Fixed Disk Drives.
Mirroring is also supported using one  
300-/600-Megabyte expansion unit, equipped 
with two 300-Megabyte fixed disk drive units, A  
single external fixed disk drive controller, 
plugged into the system bus and connected with a 
cable to an external interface adapter mounted in 
the expansion unit, complete this implementation 
(Figure 9-3). In both Figures 9-2 and 9-3, data 
written to one fixed disk drive is exactly dupli-
cated in the other.
Figure 9-3.  Two Mirrored 300-Megabyte fixed disk drives 
externally mounted in expansion unit.