PLUG COMPATIBLE with HISI Interface

No hardware or software modifications are required to use the latest SCSI drives on Honeywell controllers. Unplug the existing disk drive and install the AEM-3, using the same cables. Requires no changes to the diagnostics or operating software.

The AEM-3 replaces most disk drives that use the industry standard Honeywell interface. It can be configured to emulate drives from Control Data, MPI, and Honeywell.

MANY CONFIGURATIONS AVAILABLE

The AEM-3 is a modular system and is available with numerous options. Two separate HISI drives can be emulated within one dual AEM-3 enclosure. Rack mount, table top, and custom mounting configurations are available.

CACHE BUFFERING for FAST ACCESS to Data

Up to 64 MBytes of data caching provides significantly reduced access times to common data. Cache is managed by a "Least Recently Used Track" algorithm.

HIGHER DATA TRANSFER RATES

Some host controllers are capable of data transfer rates well beyond those of the original HISI disk drive. The AEM-3 supports up to 10 Mbits per second which can provide a threefold increase in transfer rate when used with certain controllers.

OFF-LINE BACKUP, DISK COPY

The off-line backup option allows the user to backup, copy, and verify the HISI image. A 300 MByte image can be copied in as little as five minutes to another removable SCSI drive. Backing up the same 300 MB image to a QIC tape takes as little as 15 minutes.

DISK MIRRORING

RAID-1 internal Disk to Disk Mirroring is another option to the AEM-3. Alternating reads continually assure the user of a valid mirror. Internal Disk to Disk Mirroring also provides on-line, continuous backup of critical data.

REDUCED POWER and COOLING

The AEM-3 uses significantly less power and requires less cooling than the older HISI drives it replaces, up to 95% less in some cases. Floor space requirements can also be reduced up to 95%.

MULTI-VOLUME Option

With the Multi-Volume Option users can partition the SCSI drive to create multiple volumes. The supporting software also allows for copying between volumes. The external Multi-Volume switch indicates the selected active and bootable volume.

EASE of USE

User controls and indicators are similar to the original HISI disk drives. Operators already familiar with the various HISI drives will find the AEM-3 easy to work with.

FLEXIBLE ARCHITECTURE

The AEM-3 uses a combination of microprocessor control and Field Programmable Gate Array logic for optimum performance and flexibility. As a result, configuration changes and field upgrades can easily be implemented as software/firmware changes.

 

 

INTERFACE
Honeywell Information Systems Interface. Single port standard, dual port optional. Daisy-chain interface compatibility.

Control/Maintanence: RS-232 serial port, ASCII, DB-9 or Modular connector.

DATA TRANSFER RATE

6 to 10 Mbits per second. Crystal controlled.

EMULATION

All parameters programmable

Cylinders 1024 max
Heads 64 max
Track Length
30,720 to 61,440 Bytes max (Soft sectored)
32,768 to 65,535 Bytes max (Hard sectored)
Sector Length- Programmable 0 - 32,768 Bytes

CACHE BUFFER

Size 2 to 64 MBytes
Capacity 64 to 1024 Tracks

SEEK TIMES
TYPICAL Drive and Emulation Dependent.
Track to Track 0 - 20 ms
Average 4 - 18 ms
Maximum 20 - 30 ms
Average Access 11 - 28 ms
Average Latency 6.2 - 8.4 ms

RELIABILITY
MTBF 200,000+ hours
MTTR 15 minutes
POWER
Input Voltage 90 - 135, 180 - 264 VAC (Selectable)
Frequency 47 - 63 Hz
Power 50 - 90 Watts (Maximum)

PHYSICAL

High x Wide x Deep, Weight
Rack Mount 5.25 in. x 19 in. x 25 in., 35 lbs
133 mm x 483 mm x 635 mm, 15.9 kg
Table Top 13.5 in. x 7.5 in. x 17 in., 29 lbs
343 mm x 191 mm x 432 mm, 13.2 kg
Drive Module 1.7 in. x 4.6 in. x 8.2 in., 3 lbs
43.2 mm x 117 mm x 2.8 mm, 1.4 kg

Specifications subject to change without notice.

COMMON OPTIONS

Opt-24 Additional Cache Memory
Opt-25 Multi-Volume Support
Opt-30 Internal UPS
Opt-41 Syquest (270 MB) Image Copy/Backup
Opt-51 Disk to Disk Image Copy
Opt-55 RAID Disk Mirroring and On-line Copy
Opt-6X Disk to Tape Backup (QIC)
Opt-7X Disk to MO Disk Backup

More Options Available.

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