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Architecture
Running on 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 a burst rate of 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 management 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, which provide further data
security, 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
Optional
battery backup
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
System Components
Redundant,
hot-swappable components, designed for no single point of failure
2U
RAID enclosure or JBOD
Single
RAID controller
12
drive trays
Dual
redundant power supplies
2
hot-swappable fan modules
Host Interfaces
Two
2Gbps Fibre Channels OR Two SCSI-160 Channels
SAN
ready
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
Drive Interface
Serial
ATA 1.5Gbps via backplane
Twelve
(12) 1-inch trays
Dongle
board for parallel ATA drives
3.5",
1" high 1.5Gbps SATA disk drives
12
hot-swappable drive trays
Automatic
bad sector reassignment
Drive
hot-swappable via SCA-II connectors
Dedicated
bandwidth to each connected drive
Enclosure
Two
350W power supplies w/ PFC
Three
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-160 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
Firmware-embedded
Java-based GUI RAID manager
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
SAN Management
LUN
Masking access control over terminal emulation or GUI manager, configurable
filter entry variables
Up
to 1024 LUNs supported
Maintenance & Availability
Optional
Li-ion battery support
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.
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
Interfaces
2
SFP sockets using a short-wavelength adapter
One
audio jack for RS-232C serial port (38400, n, 8, 1)
One
RJ-45 Ethernet port
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
3 cooling fans in three 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
2U 19-inch rackmount chassis
Chassis Physical: 446.2W x 486.5D x 88H mm
SI/ODM controller board: 255L x 142W mm
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