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PRODUCTS BY PLATFORM
PRODUCTS BY INDEX
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SCSI
Switches
 Designed
for the IBM AS400/iSeries with HVD SCSI interfaces, the Dynamic SCSI
Switch offers a simple way to maximize the investment in high value tape
drives or libraries by sharing them between systems. A Dynamic SCSI
Switch makes this possible and will also save money on maintenance and
manpower, enabling backup and restore operations onto different hosts,
and across platforms. This is all achieved without the need for
physical switching or special software.
Supported Drives:
IBM 3570, 3590, 3490, LTO Ultrium 3580, 3581 Autoloader, Fujitsu 3590,
DLT, AIT and 8mm and most Libraries.
Download the Dynamic
SCSI switch data sheet in pdf format
 Compatible
with all modern tape drives, including the complete LTO range.
LTO (Linear Tape Open) is setting new standards in high
performance tape technology. Available from IBM, HP, and Quantum with
compatible media. Standard single host attachment, a simple SCSI
Switch will connect a second host to a shared device.
Switch Features
- Simple dependable way to maximize the value of your SCSI
tape investment.
- Hardware only solution - no special software or patches
needed.
- Simple plug and play installation.
- Zero overhead: up to 160 Mbyte per second bandwidth - no
speed loss.
- Continuous availability to both hosts - benign message
informs one host if drive is already in use.
- Save on Hardware and Future Tape Maintenance costs.
- Host fail-over protection for SCSI Raid and tape libraries.
- Available as a 3rd and / or 4th host attachment for IBM
3590 drives.
- All Avax SCSI switch solutions are 100% compatible with IBM
iSeries (AS/400)
, RS/6000, Microsoft, HP, Sun, DEC Alpha and most other computer
systems.
Download the Manual
LVD SCSI switch data sheet in pdf format
NOTE: We still offer switches
for legacy Single Ended (SE) SCSI
devices.
| Web Controlled SCSI Switch
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- Share SCSI Devices between Multiple Hosts to maximize the
peripheral investment
- Controlled automatically via the intranet—The
Switch acts as a Web Server, and its configuration can be controlled
using standard Windows (or Unix) task scheduler
- Can be used to provide failover or failsafe protection when
sharing SCSI RAID or Tape Libraries between an active host and a
dormant host
- A low cost alternative to a SAN
- Matrix Switches 2 x 2, 3 x 2 and 4 x 2 available.
Download the Web
Controlled SCSI switch data sheet in pdf format
| Server
Clustering Switch (High Availability)
|
 High
availability computer systems require Shared Disks and Tape/Libraries,
but sharing by joining the SCSI buses between servers can be
problematic. Consideration must be given to shared termination and bus
stub lengths but the Avax Server Clustering Solution overcomes all of
these problems. By allowing bus segments to be created that are totally
regenerated and re-timed, these are isolated from the adjoining buses.
This also allows the disks to be placed up to 25 metres from the hosts.
- Share a Disk or Tape between 2 or more Hosts
- Sharing can be manual or dynamic / automatic
- Hardware only solution - no special software or patches
- Available for HVD or LVD hosts, or a combination
- PCB provides complete SCSI isolation between hosts. Each
host
has an independently terminated bus that is not affected by the bus
switching
- Simple and dependable
Download the Server Clustering Switch datasheet: click here.
(pdf)
 If
the tape drive is in use by one host, and another host attempts access,
it will receive a "device reserved" response until the original host
has completed it's task. To each of the hosts it looks like a tape
drive is attached and backups/restores will run at the maximum drive
transfer rate.
Each server will have a copy of backup software running. The
Multi-Serve will be able to backup from any other servers connected
over the network. When scheduled backups start the tape drive will read
the tape in the drive and append data to the tape. This system also
allows restores to be performed at full tape drive transfer rates, with
no network traffic overheads.
................................................
 Partition
a Tape or CD library and its slots into two or more independent virtual
libraries each with its own isolated SCSI input.
It is often desirable to share a Large Library between a number of
hosts. The traditional Client-Server approach to this problem has a
number of disadvantages, which are overcome by the virtual library
approach.
- The backup data rate is degraded by the network - it is
better to backup from each host via a direct SCSI connection
- Splitting the library allows the use of lower cost Single
Server Management software.
- Eliminates the need for slot pooling and allocation between
hosts.
- Allows hosts of different types, with different software to
share a single library
In addition to our standard range, Avax can design and build custom
SCSI switches to your specifications. Mixed bus types,
matrix and multi way switches are all possible.
Contact your Avax sales representative for more details.
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