PASSPORT XL DISK MIRRORING SOFTWARE BRINGS RAID CAPABILITY TO REMOVABLE
STORAGE

NEW YORK, NY, June 28, 1994 -- MountainGate Data Systems today announced
Disk Mirroring software for its PassPort XL family of 3.5-inch removable
drives and subsystems, enabling users to quickly and inexpensively
safeguard and backup critical data. MountainGate's 1776 Immunity Disk
Mirroring Software features RAID Level 1 capability that combines the high
performance and removability of PassPort XL to quickly backup as much as
1GB of data per cartridge. The software was developed by 1776, Inc., and
customized to work with PassPort XL. MountainGate made the announcement at
PC Expo, where the software will be demonstrated in Booth #833.

FasterBackup With Simplified RAID Capability

This software was developed for high-capacity data storage users who
recognize the advantages of using removables and also need to backup and
access their data simply and quickly. Immunity Disk Mirroring Software
provides some of the same fundamental features as more elaborate RAID
subsystems, yet costs considerably less. With PassPort XL's fast access
and data transfer times and high capacity, users now have a
high-performance backup alternative to tape drives. Key features of the
software include:

* Continual maintenance of an identical copy of primary disk
  data that can mirror any PassPort XL, IDE or SCSI drive in
  the network
* DOS and Windows compatible, including Windows For Workgroups
  and other DOS-based, peer-to-peer networks
* Easy installation and set-up, requiring no hardware other
  than PassPort XL

More On PassPort XL Removable Drives

PassPort XL is a fully enclosed, 3.5-inch removable hard disk drive in a
cartridge that can be used and exchanged between its desktop docking
station and internally in most PC systems. PassPort XL drives, available
in capacities of 170MB to 1GB, provide users in data-intensive
applications easy and secure removability and transportability with
sufficient capacity to carry entire applications and operating systems.
When used as a secondary drive or for data backup, PassPort XL features:

* Fast access time (up to a 9.5 ms average) for quick backup,
  verification and access to data
* Boot Switch capability allowing system recreation in place of
  the primary drive
* Removability for guaranteed data security

Price And Delivery

Immunity Disk Mirroring Software for PassPort XL is available now and sells
for a suggested retail price of $499. PassPort XL drive cartridges are
currently available in up to 1GB and sell for a suggested retail price of
$1,950 in that capacity. For internal configuration, each PassPort XL
docking station sells with a host adapter for the suggested retail price
of $529. Also at PC Expo, MountainGate will feature faster access times
and lower prices for the entire PassPort XL family.

More On MountainGate

MountainGate Data Systems, Inc., a Lockheed Company, was formed in 1992 and
manufactures the widest range of removable, high-capacity storage
solutions for data security, creative graphic arts, digital video editing
and critical data backup applications. PassPort XL, acquired from Quantum
Corporation in 1994, has an installed base of over 23,000 worldwide. For
more information on MountainGate, call (800) 556-0222.

MountainGate Data Systems Inc
9393 Gateway Dr
Reno, NV 89511-8910
702-851-9393,  fax 702-851-5533

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