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 The Astek A42412-ENC JBOD has state of the art Gen3 Serial Attached SCSI (SAS) expanders that work with either SAS (Up to 12Gbps) or SATA (up to 6Gbps) SSDs (Solid State Drives) and HDDs (Hard Disk Drives). The compact JBOD can hold twenty-four 2.5” SATA or SAS drives ranging in thickness from 6 to 14.5mm.


The A42412-ENC makes an ideal storage test JBOD that can be configured with either one SAS Expander Controller (Single Controller Configuration) or two SAS Expander Controllers (Dual Controller Configuration). The dual controller configuration allows testing of a High Availability (HA) architecture with dual ported SAS drives. A key feature of the JBOD is the ability to change the configuration by simply adding/removing SAS Expander Controllers or reconnecting the SAS internal cables from the SAS Expander Controllers to the storage backplane. The A41212-ENC can be configured to support Crypto Key Erase and Block Erase functions for SED FITs SSDs.

Each Gen3 SAS Expander controller board can provide up to 19.2GBytes/sec of data bandwidth through four Mini-SAS HD external x4 connectors (SFF-8644). Each controller board can be configured anywhere from a single x16 wide port, providing 19.2GBytes to a single server, to sixteen x1 ports providing 1.2GByte/sec of bandwidth to 16 separate servers (Please note that special x4 breakout cables are needed from Astek for x1 connections). In addition, each x4 port connector can support both passive copper cables (up to 6M in length) or Active Optical Cables (AOCs up to 100M in length). A typical configuration is using four standard Mini-SAS HD (SFF-8644) Gen3 SAS Cables connected to four different servers


Ordering Information

A42412-ENC-02 24-bay 12Gb/s SAS storage enclosure, Single Controller Configuration, HBA or RAID Controller controls Drive LEDs (SGPIO)
A42412-ENC-03 24-bay 12Gb/s SAS storage enclosure, Dual Controller Configuration, Drives control Drive LEDs (No SGPIO)
A42412-ENC-01-60-60A 24-bay 12Gb/s SAS storage enclosure, Dual Controller Configuration, Crypto Key Erase and Block Erase functions for SED FITs SSDs, Drives control Drive LEDs (No SGPIO)



Technical Specifications

Compliance ANSI T10 SAS specification 3.0
Available Data Rate Bandwidth

Single Controller Configuration - Up to 19Gb/s

Dual Controller Configuration – Up to 38GB/s

Modes Direct-attach, cascade vertically and horizontally, Crypto Key Erase and Block Erase for SED FITs SSDs
Supply Voltage Universal input from 100-240 VAC @ 47/63Hz
Supply Power 500W Hot-Plug, Redundant, Failover Power Supply
SAS Bus 24 Dual-Ported SAS/SATA ports, Gen3 12G SAS and Gen3 6G SATA

SAS Bandwidth



X4 Wide Port

X8 Wide Port

X16 Wide Port


300 MB/s
1200 MB/s

         2400 MB/s

         4800 MB/s


600 MB/s
2400 MB/s

4800 MB/s

9600 MB/s


1200 MB/s
4800 MB/s

9600 MB/s

19200 MB/s

Connectors 4 SFF-8644 Mini-SAS HD per controller
Form Factor

Standard 2U Form Factor – 19” wide x 23” long x 3.47” high (2U)

Fits in standard 19” Datacenter Rack, Comes with sliding Rails

Weight 40.8 lbs. (18.6Kg)

SAS 2.0, SAS 2.1, SAS 3.0, SCSI SAM-4,

SATA 3.0Gbps, SATA 6.0Gbps

Device Support  target disks, SAS or SATA
Agency Approval RoHS Compliant (lead-free)



    Relative Humidity


15° to 45° C

5 to 90% non-condensing

Airflow: 200 LFM


-10° to +85° C

5 to 90% non-condensing