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Architecture
Running on an architecture used by the most demanding applications,
the subsystem is equipped with intelligent algorithms capable of
bridging the point-to-point bandwidth of SATA drives with high speed
host channels. Its separate bus backbone is built around the dedicated
XOR engines capable of fast parity calculation and I/O turnarounds.
The distribution of data can be optimized with configurable array
settings and the free association between individual arrays and
different optimization modes.
High Performance
Featuring a 64-bit 133MHz memory bus, the unparalleled bandwidth
makes the subsystem's high data throughput more than sufficient
for small-to-medium sized servers or workstations. Data can be distributed
at the burst rate up to 1066MB/sec. The dual PCI bus design virtually
eliminates all imminent bottlenecks on IO traffic, providing sufficient
throughput for a wide range of applications on SCSI-based PCs, single-user
workstations, NT, Linux, or Unix-based servers. These applications
include disk-to-disk backup, Video on Demand, CCTV, and stream editing.
Intelligent Drive Handling
Media Scan is an innovative intelligent drive management function
that can be used for data retrieval from the occurrence of bad sectors
on hard drives. If two bad blocks occur on two member drives of
an array, the integrity of the stored data will be endangered. Intelligent
drive handling capabilities can be used to retrieve data from the
damaged sectors. Media Scan is able to handle low quality drives
in both the degraded mode and during the rebuild process. Other
intelligent drive handling features include the transparent resetting
of hung hard drives, power-failure management and bad drive handling
during LD expansion.
RAID Controller
 State-of-the-art
400MHz RISC processor with 256KB embedded L2 cache
Proprietary
ASIC133 hardware XOR engines with ECC support Standard 128MB 1GB
cache memory in one SODIMM
Voltage
and temperature self-monitoring
One
Ethernet port for out-of-band management
32KB
NVRAM with RTC (Real Time Clock)
Audible
alarm
RAID Operation
RAID
level 0, 1, 1 (0+1), 3, 5, 10, 30, 50, and JBOD
Multiple
array configuration
Hot-spare
drive operation
Hot-swappable
drives
Automatic
background rebuild
Online
capacity expansion
Intelligent
drive management
Host
Interfaces
Two
2Gbps Fibre Channels OR Two SCSI-160 Channels
SAN-ready
System Components
Redundant,
hot-swappable components, designed for no single point of failure
2U
RAID enclosure
Single
RAID controller
8
drive trays
Dual
redundant power supplies
2
hot-swappable fan modules
Drive Interface
Serial
ATA 1.5Gbps via backplane
Eight
(8) 1-inch trays
3.5",
1" high 1.5Gbps SATA disk drives
8
hot-swappable drive trays
Automatic
bad sector reassignment
Drive
hot-swappable via SCA-II connectors
Dedicated
bandwidth to each connected drive
Host Interface
Auto-negotiate
FC-AL, point-to-point, and switched fabric
Concurrent
I/O commands
Tagged
Command queuing up to 256
Variable
stripe size per logical drive
Optimization
setting for random or sequential I/Os
Enclosure
Two
350W power supplies w/ PFC
Two
cooling fan modules
Fan,
power, and disk drives monitoring by LED indicators, audible alarm,
and manager software
External Connections
Two
SFP ports for dual channel optical fiber connection OR two mini-SCSI
ports for SCSI-320 connection
One
RS-232C (Audio Jack) serial port (38400, n, 8,1)
One
RJ-45 Ethernet port
Management
LCD
keypad on a foldable forearm handle
Firmware-embedded
manager via RS-232C (audio jack, platform-independent)
Browser-based
Java GUI over in-band connection or the Ethernet port
Centralized
management of multiple arrays over in-band or Ethernet
Real-time
event notification over Email, LAN broadcast, or SNMP traps
Host-side
SES emulation with pass-through to back-end SES emulation
SNMP
2.0 MIBs with get and set commands
Maintenance & Availability
Immediate
array availability
Drive
roaming, array configuration on drives
Controller
voltage and temperature self-diagnostics
Auto switch cache policy and Auto shutdown
When a RAID controller detects conditions exceeding preset thresholds,
the following actions will be exerted to protect the hardware:
1. Automatically flush cached data and switch
the array's caching mode from write-back to write-through
2. Commence an auto shutdown
Environmental thresholds associated with the auto-shutdown feature
are user-configurable. Caching mode changes back to write-back once
normal condition is restored.
SAN Management
LUN
Masking access control over terminal emulation or GUI manager, configurable
filter entry variables
Up
to 1024 LUNs supported
Requirements
Power: 100~240VAC + 10% full range; 6A / 3A at
90V / 230V, 47Hz / 63Hz
Relative Humidity: 5~95% non-condensing
Operating Temperature: 0~40 C
Power Supply
2 redundant, hot-swappable power supplies with PFC
Input: 90~260VAC, 47~63Hz
Output: +5V, 25A max.; +12V, 24A max.; +3.3V, 20A
max.; 350watts capacity
Cooling Fan
2 cooling fans in two separate modules:
Operating temperature: 5 to 40°C
Non-operating temperature: -20 to 60°C
Relative humidity: 10~95%, non-condensing
Operating altitude: sea level to 10,000ft
Dimensions
Chassis dimensions: 88H x 446.2W x 486.5D mm
(w/ protrusions): 88H x 481W x 525D mm
Package dimensions: 344H x 600W x 670D mm
System weight (w/o drives):
Net weight: 16kg
Gross weight: 23.5kg
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