ULTRASTOR ULTRA 12F, Руководство по установке

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APPENDIX F
Breaking the 528MB OS/2 Limitation and
Duplexing Under OS/2 Lan Manager
This application note describes the procedure for installing the ULTRA 12F24 & 12C
ESDI disk controllers and device driver under OS/2 to eliminate the 528 Mbyte hard
disk partition limitation and to provide disk mirroring under LAN Manager release
2.0. Note that if you intend to utilize disk mirroring under LAN Manager release 2.0,
please read the section titled "Configuring LAN Manager" towards the end of this
note before you install OS/2. In addition, UltraStor has tested only LAN Manager 2.0
and if another version or release is required, please contact UltraStor. The device
driver supports the standard OEM edition of OS/2 Version 1.1 and 1.2 along with
their unmodified ISA disk device driver. Some OEMs may modify this driver and
make the procedure listed below incompatible. If unforeseen problems occur, contact
the OEM suppling OS/2.
While the UltraStor's OS/2 device driver supports the ULTRA BIOS track mapping
mode for large drives, this feature will not be supported under OS/2 release 1.1 The
driver does support two controllers with up to 4 ESDI drives under OS/2 release 1.2;
one controller should be set up as the primary and the other as the secondary
controller. This device driver will support LAN Manger 2.0 when used with OS/2
release 1.2 or higher. Under this environment (OS/2 1.2 plus LAN Mgr 2.0), the
driver will support fault tolerancy (disk duplexing/mirroring) with one or two
UltraStor controllers.
Controller and Drive Preparation
Follow the controller jumper setting and drive preparation as outlined in Appendix
Reference I.
Reference Manual Page F-1
NOTE
Provided the UltraStor OS/2 device driver is used, the track mapping
mode should be set to
<=1.2GB if the drive has more than 1024
cylinders with capacity more than 512MB but less than 1.2GB, OR set
to >1.2GB if the drive has more than 1024 cylinders with capacity
greater than 1.2GB.