Reactive Group Solid State Disks Ltd SCSIFLASH Arraid, LLC SCSI SDD


Honeywell Multiplex Interface (HISI)

The Arraid AEM-3 system provides a new and warranted equipment replacement for drives that adhere to the Honeywell Multiplex Interface, also known as HISI.

Capacities: 40MB to several hundred megabytes

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The AEM-3 is plug-compatible with original and refurbished HISI drives, while using ARRAID's proprietary solid state 'ARRAID Flash Drive' (AFD) to store data.  Internal AEM rotating drives can still supported.

No host system software or controller changes are required to install the AEM-1.

The AEM-3 provides a complete bridge between the host HISI controller and the AEM's SCSI drives. HISI interface drives were widely used on DPS-6, Level 6 and similar computers from Bull and Honeywell Information Systems. HISI interface drives are still in use today on systems with specialized functions and custom software, making it impractical to re-host the complete computer system.

Originally built as free standing floor models with removable disk packs, these drives were also produced in rack mount with removable packs, fixed - sealed media, or a combination of both. Capacities ranged from 40MB to several hundred megabytes and were built by Bull, Honeywell, CDC and MPI.

While refurbished HISI drive replacements are available, refurbished HISI drives commonly fail within a few months resulting in system down time. The AEM-3 is provided as new equipment, with a warranty, and MTBF of 200,000+ hours and significantly more when using the solid state AFD.

 Additional AEM-3 options include disk to disk backup, disk to tape backup, AFD network (backup & restore) and mirroring. No refurbished SMD replacement can match the reliability, features and customer support provided by choosing the AEM-3 to replace your aging HISI disk drives.

Contact Arraid today to learn more about new drive replacements for aging computer systems.


Features and Benefits

  • Replaces aging and refurbished SMD drives with new data storage technology.
  • ARRAID Flash Drive (AFD) option is a Solid State SCSI disk replacing traditional mechanical SCSI drives (DAT, QIC, Tape & Magneto Optical Disk)
  • Additional features such as network backup, mirroring, restore and removable media can be added.
  • The CompactFlash (CF) media in the ARRAID Flash Drive (AFD) is treated exactly the same as the floppy disk media. All drive data is stored on the CF media as if were the original diskette media.
  • AFD network feature option offers LAN network (ethernet-based) back-up and restore capability directly from the AFD using the on board RJ45 Network port. No additional software or register changes are required to the legacy host. Including ARRAIDs FLASH2GUI Software, an optional ethernet support feature for centralised backup and restore capability lessening the reliance to rotate media.  Network option only available on AEM with AFD network drive installed.
  • Easy to install. No hardware or software changes required, other than the drive itself.
    • Can replace or be added to existing drives.
  • Operating system, application and diagnostic software are supported as is.
  • An LED or Alpha-Numeric Operator Panel provides the same controls as the original drive.
    • Minimal Operator training required.
  • High reliability with near zero maintenance required.
    • Greater computer system availability with lower cost of ownership.
  • AEM-3 data storage can be to removable media, regardless of the original media. Ideal for secure applications.
  • Greatly reduced power consumption compared to old wash-tub drives.
  • The AEM is configured using internal software. The same model will emulate a wide range of disk drives.
    • System disk capacity may be increased if required.
    • Using the same AEM model for several drives limits the spares requirement.


For More Information

Get the AEM-3 Data Sheet

Learn how the AEM- replaces the Honeywell Bull HISI drive interface using Disk Drive Emulation.

Unable to determine if the AEM-3 is right for your application? Contact us here or use Live Chat to speak with Arraid representatives. 


Arraid, LLC
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AZ 85027
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