Sans Digital AccuSTOR AS424X12 Hardware Detailed User's Manual page 10

Installation Guide
The firmware of 12Gb JBOD system has been included the failover to utilize the
most up-to-date technology available, providing your system with reliable, high-
quality performance. User can configure redundant mode with two expander
module using either RAID controllers or HBAs to achieve failover protection. Each
expander board features three 12Gb/s Mini SAS HD (SFF-8644) connectors;
default setting one for host and two for expansion to additional JBOD enclosures.
For host and easy expansion. High Performance Architecture sets new boundaries
of industry performance expectations! 12Gb/s SAS (1200MB/s bandwidth per
physical link) 12Gb/s SAS/SATA (1200MB/s bandwidth per physical link). The
DataBolt™ Bandwidth Optimizer is designed to help facilitate the industry transition
to 12Gb/s SAS-enabled systems by allowing users to take advantage of 12Gb/s
speeds while utilizing existing 12Gb/s drives and backplanes. The expander
buffers 12Gb/s data and then transfers it out to the host at 12Gb/s speeds in order
to match the bandwidth between faster hosts and slower SAS or SATA devices.
The 12Gb JBOD systems contains an embedded expander manager that can
access via in-band SES-2 over SMP protocol and out-of band RS-232 port. An out-
of-band serial port is available for managing the configuration and monitoring the
expander.
The 12 Gb JBOD system supports the following features:

Supports 12Gb/s SAS and 6Gb/s SATA disk drives.

Single (4x wide-port) minSAS HD connector for host connection.

Dual (4x wide-port) minSAS HD connectors for expander module daisy chain.

Redundant and Hot Swappable JBOD expander I/O board, Fan, Power and
Drives.

Completely monitored by In-band SES (SAS Port), out-of-band RS232 serial
port.

CLI through RS232 serial port
 Supports "DataBolt™ Bandwidth Optimizer" to take the advantage of 12Gb/s
speed with slower SAS and SATA devices.

Configuration and environmental information is accessible either via the
Serial Port or RAID System.

Load sharing, hot swappable redundant power system with PFC function.
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