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Overview
The SentinelRAID controllers are designed for fast, flexible
RAID operation using Ultra3 SCSI and Fibre channels. With
the help of a high-performance 64-bit PowerPC CPU and sophisticated
Infortrend RAID ASIC, I/Os are rapidly processed and distributed
to array hard drives. Data is transferred between the host
and the drives via a high-speed 64-bit data path at a burst
rate of533MB/second. The result is a controller which excels
in applications that require both high sustained data rates
and fast I/O turnaround.
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Features
High Flexibility
All SCSI channels can be defined as either a drive channel or a
host channel. This allows users to change the host and drive deployment
for connecting multiple host systems through independent channels.
Firmware upgrade does not affect the single or redundant controller
configuration. Controllers can shift I/Os temporarily to allow both
firmware's to be updated. In the unlikely event of controller failure,
a failed unit can be replaced with one running later version of
firmware.
SAN Application
SentinelRAID controllers have all the necessary protocols for SAN
applications. These include extended LUN capabilities such as LUN
filtering, also known as SAN mapping or masking, and multi-file
systems lock support. 64 array partitions and 128 LUN filter entries
per controller are supported.
Fibre to SCSI
The SentinelRAID series is ideal for a mixed Fibre-to-SCSI solution
with the flexible connectivity of arbitrated loop, point-to-point,
and switched-fabric. By combining a pure Fibre or Fibre + SCSI daughterboard
with the controller's base channels, the controller is ideal for
SAN environments where features like LUN masking and multi-RAID
partitioning can be applied.
High Data Availability
With a multitude of RAID functions, the SentinelRAID series gives
users the highest data availability. SentinelRAID's capabilities
include: automatic drive failure detection, background rebuilding,
and bad sector reassignment. When the controller detects a hard
drive failure in a RAID 1, 3, or 5 logical drive, the disk array
will instantly replace the failed disk with a hot-spare drive. Data
is reconstructed into the hot-spare drive, while the host remains
uninterrupted. In the absence of a hot-spare drive, users can hot-swap
the failed drive with a new one and initiate an automatic rebuild.
The battery backup option protects write-back cache data from sudden
power interruptions. The battery supplies auxiliary power (see specifications
for details) to the controller's cache memory for up to 72 hours.
Hot-Swappable Mechanism
The controller itself is hot-swappable for full non-stop redundant
operation. The backplane holding the cable connections is joined
by and separated from the main controller board with docking connectors.
A faulty unit is easily removed and replaced.
Bad Sector Management
SentinelRAID controllers detect bad sectors on SCSI drives during
diskreads or writes. They will recover the data from parity fault
and perform bad sector reassignments. Bad sector management is fully
transparent to the host.
Active-Active Redundancy
SentinelRAID controllers support active-active redundancy with a
synchronized write-back cache. Each controller has a dedicated high
bandwidth channel for cache synchronization. While in redundant
mode, a failed controller automatically shifts I/O functions to
the secondary controller. Failover and failback are totally transparent
to the host.
Redundant Chassis (2500R1, R2, R3)
The SentinelRAID-2500R series consists of two controllers housed
in a single 5.25" full-height chassis. A dedicated high-bandwidth
channel is used for cache synchronization. The 2500R is a cableless
solution designed for ease-of-integration.
Zero Down-Time Technology
The controller is designed from top to bottom to be hot-swappable.
Implemented with features like the automatic failover/failback,
auto hot-spare engagement, advanced failed drive management, to
name a few, disk array operation is protected from possible causes
of downtime.
Board-Only Solutions for OEMs
SentinelRAID controllers are the deal solutions for OEM customers
who design their own backplanes. The controller board can be readily
integrated with a cableless and hot-swappable enclosure design via
two docking connectors.
Full technical specifications are detailed on the pdf.
Download
the printable PDF from our FTP site!
Please contact our sales team at sales@caeneng.com or our service department at support@caeneng.com if you want to find out more!
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