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Overview
The Comet iSCSI provides cost-effective storage by combining Caen's
sophisticated RAID technology with iSCSI protocol that encapsulates
SCSI data blocks and carries them over standard Ethernet infrastructures.
Access to its storage volumes is made with connectivity of two 1Gbps
Ethernet (GbE) ports via familiar Gigabit Ethernet using standard
copper cabling or point-to-point to application hosts.
The Comet iSCSI storage array is ideal for building a shared storage
pool for disk-to-disk volume distribution, backup, storage consolidation,
and replication of data among networked servers. The storage array
operates with the advantages of iSCSI protocol in terms of its block-based
performance, lower training and maintenance costs without the complexity
of other networking technologies such as Fibre Channel.
The Caen iSCSI is built around Caen's next-generation, custom-engine.
Boasting a 2GB/sec internal bandwidth, the architecture features
the PowerPC CPU and the dual PCI/PCI-X buses for fast I/O transactions.
High Performance
Featuring a 64-bit 133MHz data bus, the subsystem's high data throughput
is more than sufficient for small-to-medium sized servers or workstations.
Robust functionality and adaptive algorithms facilitate chip-level
operation that is already fast and flexible. For example, a timeout
can be configured for individual drive response time. If a specific
disk drive fails to respond in time, the firmware accumulates data
from the adjacent stripes of the array to satisfy applications that
require fast return of data.
These adaptive designs assure sufficient throughput for a wide
range of applications running on Windows 2000/2003/XP, Linux, or
Unix-based servers. Ideal applications include Disk-to-Disk backup,
small business network, storage consolidation and others.
Enclosure Management
The Comet iSCSI subsystem incorporates massive storage capacity
in a safe environment where a variety of hardware and firmware mechanisms
ensure the highest level of data availability. In addition to RAID
protection for the disk drives, the PSUs and cooling modules come
implemented as redundant/hot-swappable modules. Even the battery
module can be replaced online.
The rotation speed of the enclosure's dual-speed fans is controlled
by the firmware. In critical conditions, e.g., PSU or fan failure,
the fan rotation speed is raised to a higher level. Control over
caching behaviors is a user-configurable option. In the event of
component failures, such as UPS failure or low battery charge, the
firmware stops caching write requests in cache memory.
Task Scheduler
Media Scan is now armed with a unique function that helps to repair
media errors on drives. By combining the Task Scheduler with Media
Scan, the scanning operation can be scheduled to begin at a specified
start time and repeated at configured intervals. This hands-free
operation allows each such schedule to be defined to operate on
individual hard drives, all drives of a certain class, all member
drives of a specified logical drive, or all member drives of all
logical drives.
Specifications
RAID Controller
 600MHz RISC processor
with 512KB embedded L2 cache
Caen Engineering (and Caen Commerce) Custom-built
ASIC266 with XOR engine and ECC support
Standard 512MB cache
memory in one DDR RAM DIMM with optional BBU
System Voltage/Temperature
self-monitoring
One RS-232C (Audio
Jack) serial port, for text mode management
Two 1Gbps Ethernet
ports
Audible alarm
RAID Operation
RAID level 0, 1 (0+1),
3, 5, 10, 30, 50, JBOD and NRAID
Hot-spare drive operation
Drive hot-swapping
Automatic background
rebuild
Online expansion
Host Interfaces
Two 1Gbps Ethernet
Management Software
GUI, Telnet, and
SSH system monitoring via Ethernet
RAIDWatch manager
software for Windows and Linux platforms
Firmware-embedded
manager via RS-232C (Audio Jack) (platform independent)
Widest range of event
notification methods, including Email, LAN broadcast, Fax, SNMP
Traps, SMS, MSN, and ICQ
External Connections
Two RJ-45 Ethernet
ports
One Audio Jack serial
port connector (38400, n, 8,1)
Enclosure Dimensions
2U, 19-inch rackmount
chassis
Chassis without forearm
handles: 446(W) x 88(H) x 490(D) mm
Chassis with forearm
handles: 482(W) x 88(H) x 505(D) mm
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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