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Overview
Designed using Caen’s next-generation, custom ASIC266 as a
RAID engine, the Comet SATA II eF provides ample margins
for flexible load-balancing and multi-pathing algorithms. Boasting
a 2GB system bandwidth, the dedicated ASIC architecture features
abundant throughput sufficient for the subsystem's various data
protection procedures with minimum disturbance to host access.
Caen’s RAID functionality is unmatched in the industry in
terms of its wide variety of array configuration, maintenance, and
monitoring capabilities. The Fibre-to-SATA series provides IT professionals
with versatile options to meet their needs.
The subsystem provides two FC-2G host channels with 12 or 8 drive
bays for SATA II disk drives in a smartly managed enclosure. The
subsystem combines massive storage capacity with SATA II benefits,
such as high performance and dedicated bandwidth, in a safe environment
where the highest level of data availability is assured. High throughput
is available by segregating I/O traffic across the separate PCI-X
buses, while IOPS performance is delivered through the internal
buffer on the XOR engine and CPU with the help of intelligent firmware
algorithms.
High Performance
Featuring two (2) 64-bit 133MHz data buses, 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 disk drives of the array to maintain
a fast return of data.
The 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, database,
file, business network, storage consolidation and others.
Enclosure Management
In addition to RAID protection for the disk drives, the PSUs and
cooling modules are both redundant and hot-swappable modules. Even
the battery backup 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.
Manageability
The Comet SATA II eF includes a number of interface features to
keep users constantly aware and automatically notified of array
status. The subsystem comes standard with an Ethernet port for local
or remote management using simple telnet protocol or the feature-rich
RAIDWatch Java GUI. The RAIDWatch manager provides graphical presentations
of array components, monitoring windows, and all configuration options.
Additionally, the built-in LCD keypad panel displays event messages
and provides onsite access to all firmware features.
If two bad blocks occur on two member drives of an array, the integrity
of the stored data will be endangered. Media Scan is an innovative
intelligent drive handling function that retrieves data from degraded
or damaged hard drives and handles low quality drives in both the
degraded mode and during the rebuild process.
To further ensure data security, other intelligent drive management
features include the transparent resetting of non-responsive hard
drives, power-failure management, and bad-drive handling during
LD expansion.
Task Scheduler
Media Scan is now armed with a unique function that helps repair
media errors on drives. By combining 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 in the
subsystem.
Major Markets and Uses
Caen products are used in disk-to-disk backup, server-attached and
network data storage and in major industries such as medical imaging,
security/CCTV, and digital media including video-on-demand, stream
editing and more.
Specifications
Subsystem Characteristics
400MHz CPU, 256KB L2 cache Yes
ASIC266 RAID engine Yes
DDR cache memory up to 1GB Yes
FC-2G host channels 2
LCD keypad panel 1
Serial COM ports 110/100BaseT Ethernet port 1
Diagnostic LEDs on all FRUs Yes
Drive Interface
Number of disk trays 12/8
SATA-I/II drive supported Yes
Host Interface
SFP ports to optical fiber 2
Data single channel bandwidth 200MB/s
Tag command queuing Yes
Multiple target IDs Yes
RAID Configurations
RAID levels 0, 1(0+1), 3, 5, 10, 30, 50, JBOD
Max. 16 logical drives
Max. 128 LUNs
Multiple array configurations
Automatic background rebuild
Intelligent drive handling
High Availability
Redundant, hot-swappable FRUs Yes
Subsystem self-diagnostics Yes
Li-ION battery backup unit Optional
Hot-spare drives Yes
Management
RAIDWatch GUI software Yes
Terminal via RS-232C Yes
Telnet over Ethernet Yes
LCD keypad panel Yes
Event notification methods
- Email Yes
- Fax Yes
- LAN broadcast Yes
- SNMP traps Yes
- Cell phone message SMS
- Instant messengers MSN/ICQ
OS Support
Microsoft Windows NT
Microsoft Windows 2000 Server
Microsoft Windows 2003 Server
Sun Solaris ver. 8/9
Red Hat Linux ver. 8/9, enterprise ver. 3
SuSE Linux ver. 8/9
Requirements
AC Input:
100VAC at 6A; 240VAC at 3A with PFC (auto-switching)
DC Output:
12V-25A; 5V-25A; 3.3V-20A
Relative Humidity:
5% to 95% non-condensing
Operating Temperature:
0 to 40 C
Dimensions
2U, 19-inch rackmount chassis
Without handles:
446(W) x 88(H) x 490(D) mm
(17.6" x 3.5" x 19.3")
With handles:
482(W) x 88(H) x 505(D) mm
(19" x 3.5" x 19.9")
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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Two (2) FC-2G host channels, transfer rate up to 200MBps per
channel