| High Performance
The subsystem's high performance comes from its 64-bit
Power PC CPU and hardware XOR ASIC. The 64-bit bus band-width
at 66MHz between SDRAM and CPU makes its high data throughput
more than sufficient for small-to-medium sized servers
or workstations. Data can be distributed through a high-speed
64-bit path at a burst rate up to 195MB/sec and the
system's overall performance reaches up to 140MB/second
(sustained reads, Fibre or SCSI models). The dual independent
PCI bus design efficiently eliminates bandwidth bottlenecks
for IO traffic. Balanced bus loading and the superior
architecture make it an optimal RAID solution for a
wide range of SCSI-based PCs, single-user workstations,
NT or Linux-based servers.
High Data Availability
The system provides RAID levels 0, 1 (0+1), 3 and 5.
Its high data availability derives from the following
capabilities: automatic drive failure detection, automatic
failed drive rebuild, hot spare and back-ground rebuild,
disk hot swap, and online background rebuilding.
Bad Block Handling
Hard drives can fail and bad blocks may occur simultaneously
on two separate drives. The occurrence of bad blocks
on more than one drives usually leads to unrecoverable
loss of data. To prevent data loss caused by this situation,
two options are implemented: Bad Block Scrub and Bad
Block Handling in Degrade Mode. The Bad Block Scrub
can be performed regularly to examine drives and data
can be reconstructed onto good sectors if the controller
finds any bad blocks during the process. If bad blocks
are encountered on yet another drive during the rebuild
process, the block LBA (Logical Block Address) will
be indicated and the rebuild process can be continued
with the unaffected sectors, salvaging most of the precious
data.
Redundant Power Supplies
Two hot-swappable redundant power supplies provide zero
down time and fault tolerant power. With two power supplies
installed, both will share the current power needs of
the whole system. If one should fail, an alarmwill
sound and the remaining power supply will take over
the full load until the faulty unit is replaced. The
hot-swap feature ensures that the system remains operational
while replacement is taking place.
Redundant Cooling Fans
Three cooling fans are integrated for redundancy. Failures
are displayed by the RAID Guide manager software. The
system’s ventilation is from front to back. Specially
designed airflow passages dissipate heat from the hard
disks and the controller. Power-supply modules are equipped
with their own independent cooling fans.
Enclosure Fault Management
The system can monitor the operating status of enclosure
components, including that of fans, power supplies,
and disk drives. Component failures are locally indicated
on the LCD control panel, by the sounding alarm, or
through the RAID Guide manager software. The RAID Guide’s
sub-module, NPC, can be used to notify system administrators
remotely via e-mail, pager, fax, SNMP traps, or LAN
broadcast.
Setup and Status Monitoring
The system will automatically initialize based on the
number of disk drives installed at startup. Manual configuration
and monitoring can be done through the LCD control panel.
The firmware also contains an embedded management program
that can be accessed using a terminal connected to the
RS-232C port. The later is a convenient platformindependent
management utility.
RAID Guide Manager
RAID Guide is an easy-to-use, Java-based GUI RAID management
software designed specifically for use with SCSI-to-IDE
and Fibre-to-IDE RAID subsystems. Operating under Java
2.0 (Java Run-time Environment 1.2 or 1.3), RAID Guide
provides complete management interface to the disk array
and a constant real-time report of the current RAID
status, errors, events, and capacity. RAID Guide permits
IDE RAID managers to quickly locate and rectify problematic
hardware without downtime or data loss. Many RAID controller
functions, such as password management and firmware
upgrades can be handled through the software console.
The information window provides information about all
installed hard drives and the key elements of the RAID
controller such as cache size.
Controller
PowerPC-750 RISC processor with 1 MB L2 cache
Standard 128MB cache memory on one SODIMM SDRAM; Other
available cache sizes: 256/512MB
System voltage and temperature self-monitoring
Firmware in Flash ROM for easy upgrades
RAID Operation
RAID level 0, 1 (0+1), 3 and 5
Multiple RAID & Dual-host support
Drive hot-swapping
Automatic background rebuild
Hot-spare drive support
Online expansion
Host Interface
Dual Ultra3-Wide LVD SCSI; Transfer rate up to 160MB/sec
OR
Dual FC-AL 2Gbit Fibre channel; Transfer rate up to
140MB/sec
Concurrent I/O command
Tagged Command Queuing
Automatic bad-sector reassignment Controls / Indicators
Front LCD control panel for setup and configuration
3 drive LED indicators: power, busy, attention
Power and drive failure indication through LCD
Built-in alarm/ alarmmute button Management Software
RAID Guide manager software for Windows 2000 / NT via
in-band SCSI or in-band Fibre
Firmware-embedded manager via RS-232C (platformindependent)
Drive Interface
EIDE ATA-66, ATA-100 and ATA-133 compatible hard disk
drives
8 hot-swap drive bays and trays
Supports 1-inch height foNS-RM factor
Physical / Electrical Interfaces
68-pin, LVD SCSI host channel on SCSI subsystems, two
external SFP for Fibre subsystems, and one DB-9 RS-232C
serial port (38400, n, 8,1) for terminal connections
Power Supply
2 redundant hot-swappable power supplies with PFC
Input 100 to 240VAC, 47 to 63 Hz, 5A
Output 12V (19A max.), 300 Watts
5V (25A max.), 300 Watts
Cooling Fan
2 cooling fans in two separate modules, ball bearing,
54 CFM Each
Operating Temperature
5° to 40° C
Relative Humidity
10-95%, non-condensing
Altitude
Sea level to 10,000 ft
Dimensions
2U x 19”w x 20”d
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PDF!
Please contact our sales team at info@networksynthesis.com
if you want to find out more! |
