Products > RAID solutions > RAID IDE

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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, singleuser 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 find 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 alarm will 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 replace-ment is taking place.

Redundant Cooling Fans
Two cooling fans are integrated for redundancy. Failures are displayed by the RAIDGuide 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 RAIDGuide manager software. The RAIDGuide's submodule, 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 start up. 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 platform-independent management utility.

RAIDGuide Manager
RAIDGuide 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), RAIDGuide provides complete management interface to the disk array and a constant real-time report of the current RAID status, errors, events, and capacity. RAIDGuide 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 1MB L2 cache
Standard 128MB cache memory on one SODIMM SDRAM; Other available cache sizes: 56/512MB
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

Drive Interface
EIDE ATA-66, ATA-100 and ATA-133 compatible hard disk drives
12 hot-swap drive bays and trays
Supports 1-inch height form factor

Host Interface
Dual Ultra3-Wide LVD SCSI; transfer rate up to 160MB/sec OR
Dual SFP 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/alarm mute button

Management Software
RAIDGuide manager software for Windows 2000 / NT via in-band SCSI or in-band Fibre
Firmware-embedded manager via RS-232C (platform independent)

Physical / Electrical
Interfaces
Two 68-pin, LVD SCSI host channel on SCSI subsystems. Two SFP Fibre ports for Fibre subsystems, and one DB-9 RS-232C serial port (38400, n, 8,1) for terminal connections RJ45 Ethernet

Power Supply
2 redundant hot-swappable power supplies with PFC

Input
90 to 269VAC, 47 to 63 Hz

Output
12V: (25A max.), 350 Watts
5V: (20A max.), 350 Watts

Cooling Fan
2 cooling fans in two separate modules, ball bearing
9.2cm-12V, 0.23, 2600rpm, 35dba at 30° C
12cm-12V, 0.41A, 2250rpm, 36.8dba at 30°C

Operating Temperature
5° to 40° C

Relative Humidity
10-95%, non-condensing

Altitude
Sea level to 10,000 ft

Dimensions
3U x 18.9W x 24.4mmD

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