User`s guide

Release Notes
AA–RFBPE–TE 387372-005 Page 29
Special Windows NT
®
Device Driver Required for Compatibility
For local SCSI and network connections, the special HSG80 device driver,
HSZDISK.SYS, must be installed and running properly to connect Client to a
host running Windows NT
®
. The device driver makes HSG80 virtual disks
visible to the host operating system and enables communication between Client,
Agent and the host’s file system. Version 4.11 or later of the driver must be
used.
Cautions when Configuring from a Configuration File
When reconfiguring a storage subsystem from a configuration file, the program
prompts you to choose whether or not the program initializes your virtual disks.
You must choose the appropriate option or you risk the loss of your data as the
configuration file is loaded and your subsystem is reconfigured.
• Do not initialize virtual disks—Choose this option when your virtual disks
contain valuable user data, and you wish to retain that data. You might, for
instance, need to replace a failed subsystem component such as a controller
or cache module. In this case, your subsystem configuration must be
transferred to the new hardware, but you do not wish to change any
information on your storage devices themselves.
• Initialize virtual disks—Choose this option when your virtual disks do not
contain user data, or when you do not care if the data on them is lost. You
might use this option when configuring a storage subsystem from scratch, to
make it match the configuration in your configuration file.
Virtual Disk Recovery from a Configuration File
Note that when you delete a virtual disk, the disk’s member drives are all
reinitialized and any user data is lost. You cannot restore the virtual disk’s data
by reconfiguring your subsystem from a configuration file. A configuration file
contains only information about the structure of a virtual disk and does not
contain the disk’s data itself.