Specifications

The disk attached to one SCSI adapter card mirrors the disk
attached to the other SCSI adapter. In this case, if you have a
problem with either a disk or a SCSI adapter card, you can
continue to work from the duplexed subsystem without
interruption. This keeps network down-time to an absolute
minimum.
286/366
TERMINATORS
INSTALLED
SCSI ADAPTER CARD
SCSI
PORTADDRESS 330H
DISK 0
SCSI BUS
l Disks contain same data
l l Host adapters at different port
address/lRQDMA
l Driver must be loaded twice
SCSI ADDRESS CARD
SCSI
PORTADDRESS 334H
DISK 0
TERMINATORS
INSTALLED
The NetWare operating system refers to both mirroring and
duplexing as mirroring. In the INSTALL program, NetWare
displays the mirroring and/or duplexing status of a drive as either
Mirrored or Not Mirrored.
When preparing your SCSI adapter cards and hard disk drives for
duplexing, follow these guidelines:
❏ Make the NetWare partitions about the same size. You cannot
mirror partitions that vary greatly in size. See the NetWare
installation manual for limitations.
❏ Connect each hard disk drive to its own SCSI adapter card.
❏ Make sure the interrupt and DMA channels are different for
each SCSI adapter card.
6-26 Installing Software Drivers for Novell NetWare 286/386