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Arena
JanusRAID SA-4541S
The JanusRAID SA-4541s for mid-to-high end
storage market. Featuring SATA II support, dual 2Gb Fibre Channel host
interface, and upgraded CPU result in a high performance, secure, reliable and
robust system. JanusRAID SA-4541s is the ideal choice for DAS, SAN or clustering
configurations.
The JanusRAID
SA-4541S is a single controller, 2Gb Fibre to SATA-II RAID system. In a compact
2U - 12 bay chassis, featuring hot-swappable power supplies and fans. The RAID
controller, fans, and power supplies are modularized allowing for easy removal
from the rear of the unit. Also featuing a java-based GUI allowing easy remote
configuration and monitoring through a web browser.
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Host Interface: 2Gb Fibre
Data Transfer
Rate: Up to 2Gb/second
ID Assignment:
0-127
Number of Host
Channels: 2
External
Connector Type: SFP x 4 (SFP not included)
Expansion: FC
port-bypass circuit
Controller
CPU: Intel i80331 RISC CPU (667 Mhz)
Cache Memory:
512MB - Upgradable to 2GB DDR 333 SDRAM (PC2700 184-pin DIMM)
Disk
Interface: SATA-II (3 Gb/sec)
Number of Disk
Channels: 12
Hot Swap Disk
Tray: 12 x 3.5" hot-swappable trays
Hot Swap Fan:
2x 3600RPM Turbo Fan
Hot Swap Power
supplies: 460watt x 2 Redundant
AC Input
Voltage: 100 to 240V (+/- 10%), 46 to 63 Hz
RAID Levels: JBOD, 0, 1, 0+1,
3, 5, 6, TP, 30, 50, NRAID
RAID Arrays:
8
Data Rebuild:
Automatic Data Regeneration
RAID Features:
Global Hotspare, Multiple Host ID, Multiple RAID Arrays and
Multiple Slices, and Background Initialization
Advanced Data
Reliability Assurance: SMARTCor. Functions (DST, DS, DC)
Online
Expansion: Yes
Front Panel
LCD and Buttons: Easy access for configuration and status
report.
RS-232
Terminal: User Friendly interface for configuration and status
report
Web browser
GUI: Embedded GUI management interface
Event
Notification: Built-in buzzer, e-mail, and SNMP
Humidity: 10%
to 85% non-condensing
Operating
Temp: 5 C to 40 C
Non-Operating
Temp: -25 C to 60 C
Safety
Regulatory: UL, CUL, CB
EMC Standard:
FCC, CE, C-Tick, BSMI
Physical
Dimensions: 485 (W) x 555 (D) x 88 (H) mm
Physical
Weight: 16 Kgs (without drives)
Packed
Dimensions: 600 (W) x 707 (D) x 429 (H) mm
Packed Weight: 26
Kgs (without drives)
- Dual Flash ROM
Dual Flash ROM per controller gives higher RAID system availability and
reliability during firmware upgrading or in the event of a single ROM
failure.
- Web-based GUI
Embedded web based GUI (graphic user interface) management interface can
be accessed through a web browser. The GUI is java-based, and can
configure arrays, slice sizes, lun mapping, etc. and also allows remote
monitoring of drive health, fan, and power supplies.
- RAID 6
RAID 6 improves over the industry standard RAID 5 by adding another parity
disk which gives greater reliability and data protection.
- RAID TP
The innovative RAID TP improves reliability even further than RAID 6 by
creating an additional parity disk, for a total of three parity disks.
RAID TP surpasses the reliability of RAID 5 and RAID 6 and can allow up to
three disk failure while still maintaining access to data.
- Disk Self Test (DST)
Before the release of this function, users of RAID systems were forced to
test suspected bad hard drives in a host computer individually using a
drive manufacturer’s utility. This function tests the health of hard
drives with them installed in the RAID unit. DST performs write tests,
servo analysis, and read scan tests; the test results are then displayed
on the LCD and hyper terminal output. This can aid the user in deciding
whether or not to replace a suspected failing hard drive. We highly
recommend running this test before initializing a RAID set to ensure a
healthy RAID solution.
- Disk Scrubbing (DS)
With today’s RAID subsystems being capable of storing multiple terabytes,
it is becoming increasingly difficult to manage and maintain that large
amount of data. To aid a user in maintaining their data’s health, Arena-MaxTronic
has released their newest firmware function Disk Scrubbing. The data
and/or parity stored on hard drives can sometimes become corrupted; this
data can also reside in areas that are not accessed for long periods of
time. DS will use idle time to test the disks, and if a sector is found to
be corrupted, the data will be regenerated from other RAID member disks
and will be written to an uncorrupted sector. The purpose of DS is to
prevent the possibility of having multiple corrupted sectors in a single
stripe, which is one of the main causes of data loss.
- Disk Clone (DC)
Hard drives are the most likely component to fail in a RAID array, and
almost impossible to predict when the failure will occur. When a failure
does occur the RAID unit will have to regenerate data from the non-failed
hard drives to rebuild a new drive, and the RAID array will be in degraded
mode. Having a unit in degraded mode is a very cautious time because if a
second hard drive was to fail the RAID is destroyed and data is lost. This
is where Disk Cloning can aide a user. With the help of the hard drives
built in S.M.A.R.T. function, DC can determine when to begin cloning a bad
drive to a hot spare. Upon completion of cloning, the new cloned disk can
take the position of the failing disk or can stand-by until the original
disk fails, then take the failed disks position. Disk cloning is to
prevent a rebuild from ever occurring and having the unit in degraded
mode.
- Support for greater than 2TB slice and LUN
Two firmware options are available to surpass the 2 terabyte limitation;
16byte CDB and variable sector size. With either of these functions
enabled, users are able to create slices and map LUNs greater than 2TB to
their respective host channels. See support documentation for
compatibility or contact technical support for more information.
- Online Initialization
Initialization occurs during creation of a RAID array by zeroing out /
formatting drives. By default the initialization process occurs with the
unit offline, and inaccessible. With online initialization, the RAID array
can be accessed during the initialization process so that the unit can be
setup without having to wait several hours to complete initialization.
- BBU
An optional BBU can be included in the RAID system to ensure data
integrity in the event of a power outage. The BBU, or battery backup unit,
will provide power to the on-board cache of the RAID controller in the
event of a power outage. This will allow any data that is still stored on
the cache to be saved until power is restored. Once power is restored, the
RAID controller will flush the cache to drives.
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