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DMU-604 Portable |
DMU-604 Rackmount |
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The FASTCOM Hard Drive
Maintenance Unit (Model
DMU-604) is a self-contained, portable
hard disk imaging tool
used to
backup or restore an entire hard
disk. The
DMU is designed to
perform two functions:
hard drive backup to a DVD and hard drive
restore
from a DVD. The
DMU can be connected directly
to the
hard
drive through its built-in
SCSI interface or connected
to the computer through
its
Ethernet interface. Because the DMU
is a hard drive imaging
tool, it works with most
hard
drives regardless
of the computer, operating
system, or disk interface.
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DMU supports: |
Drive
Type:
Narrow SCSI
Wide SCSI
EIDE
RAID
SATA
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DMU
Connection:
Direct to drive
Direct or Ethernet
Ethernet
Ethernet
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Example USPS
Computer:
MicroVAX, IPSS
FARC, SAR, USV, MIS (AFSM)
CPOCS
Site Server (AFSM), APPS
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These are just a few
examples of the hard disks supported by
the DMU. Other systems are supported and
new systems will be added. Refer to the Supported
Systems section of this page
for a current list of tested and supported
systems, as well as pending system support.
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The
amount of data that can be stored on
the DVD depends upon how well the data
can be compressed. A very conservative
estimate is that the data will be compressed
at the rate of two to one. Most hard
disks can be backed up on one DVD, but
some backups may require multiple DVDs. |
There are also drive size considerations when
using the DMU to backup an OCR or IPSS
drive. Basically they boil down to the
number of sectors of the drive from which
a backup DVD was made. The DVD image
can only be restored to a drive that
has an equal number or greater number
of sectors. This sector count can be
seen by looking on the DVD at the "sz" file.
The file can be opened with notepad and
it contains the number of sectors used
to create the drive image.
For IPSS
drives, The following table
describes which drives each model will
or won't restore to:
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HAWK |
QUANTUM |
BARRACUDA |
HAWK
Will Restore
to |
YES |
YES |
YES |
QUANTUM
Will Restore
to |
YES |
YES |
YES |
BARRACUDA
Will Restore
to |
NO |
NO |
YES |
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MLOCR UvAX computers have seven different possible
drives. Seagate models ST31051N, ST31200N,
ST31230N, ST31231N, ST318417N, ST318418N, and
Adtron model S35H-1024CPO1-101. The following
table describes which drives each model will
or won't restore to:
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ST31200N |
ST31230N |
ST31231N |
ST31051N |
ADTRON |
ST318417N |
ST318418N |
ST31200N
Will Restore to |
YES |
YES |
YES |
YES |
YES |
YES |
YES |
ST31230N
Will Restore to |
NO |
YES |
YES |
YES |
YES |
YES |
YES |
ST31231N
Will Restore to |
NO |
YES |
YES |
YES |
YES |
YES |
YES |
ST31051N
Will Restore to |
NO |
NO |
NO |
YES |
YES |
YES |
YES |
ADTRON
Will Restore to |
NO |
NO |
NO |
NO |
YES |
YES |
YES |
ST318417N
Will Restore to |
NO |
NO |
NO |
NO |
NO |
YES |
YES |
ST318418N
Will Restore to |
NO |
NO |
NO |
NO |
NO |
NO |
YES |
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DMU Functions
The Hard Drive
Backup Function copies the exact contents and format of
an existing hard drive, compresses
it, and writes that image to a DVD
disk.
The Hard Drive
Restore Function uses the compressed
data produced by the DMU on the DVD
backup disk to create an exact image
of the original hard drive on a new
hard drive. You do not need to
format or prepare the new hard disk
in any way. Simply connect a new
hard disk to the DMU and an exact clone
of the original hard disk will be created. |
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Features:
- Fast. 10 minute
backup or restore for a MicoVAX
system hard drive.
- Reliable.
Rugged construction, field
tested unit.
- Expandable.
Up to 10 DMU units may be concurrently
run on a network.
- Upgradeable.
DMU can be upgraded to support
new systems.
- Standardized.
Uses off-the-shelf, inexpensive
DVD+R disks.
- Complete.
Cables, disks, and documentation.
- Support. Online
support / updates or telephone
customer support.
- Warranty:
1 year parts and labor.
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DMU Design Objective
The DMU was originally
designed to reduce the amount of time
and labor required to restore a failed
hard drive in the MLOCR MicroVAX computer.
Without the DMU, the process can take
4 to 8 hours, typically more if the tape
drive fails on the MicroVAX. With the
DMU, a failed hard drive in the MicroVAX
can be replaced by a new hard drive and
the system can be up and running in less
than 20 minutes.
Other systems,
like the AFSM, typically require about
30 minutes to restore a hard drive. Still,
this is a great improvement over formatting
the disk, reloading the operating system,
application software and any data that
you need. More importantly, you will
have a high degree of confidence in the
replacement hard disk because it is a
exact clone of a known good drive. |
Important!
In
order for the DMU to be of value,
you must make a DVD backup of the
hard disk while the drive is still
good! It’s useless to back
up a corrupted hard disk. Make backup
copies of critical hard drives ASAP
and store the DVDs in a safe place.
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