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Arena Products
Direct Attached Storage
Sunstar
is proud to be a Arena partner!
JanusRAID2 SA-6651E
The Arena JanusRAID2 SA-6651E features an AMCC
PPC440SP CPU, dual 4Gb Fibre channels, sixteen SATA-II drive bays, with
modularized, hot swappable power supplies and fans to reduce the amount of
operating downtime for maintenance. The JanusRAID2 series supports RAID 6 to
further increase data integrity and reliability, and a new JBOD expansion
option.
The JanusRAID2 SA-6651E is a single controller, 4Gb Fibre to
SATA-II RAID storage subsystem. In a compact 3U - 16 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 CGI-based GUI allowing easy remote configuration and monitoring
using a web browser.
A new feature to the SA-6651E is an expansion port
that enables a JBOD expansion unit to be attached and increase the total storage
capacity without the cost of another independent RAID subsystem. The JBOD
expansion feature reduces the total cost of ownership of an Arena Maxtronic
storage solution.
Ideal Applications
- Enterprise Storage
- Disk to Disk Backup
- Performance Driven HD
- Video Streaming Applications
- Security and Surveillance
- Regulation Compliance Storage
- Disaster Recovery Storage
- Audio and Video Editing
- VOD on Education or Entertainment
- Fixed Content Archiving
Host Interface: 4Gb
Fibre
Data Transfer Rate: Up to 4 Gb/second
ID Assignment: 0-127
Number of Host Channels: 2
External Connector Type: SFP x 2 (SFP not included)
JBOD Expansion: Yes (supports up to 4 JBOD expansion systems)
Controller CPU: AMCC PPC440SP CPU
Cache Memory: 512MB - Upgradeable to 2GB DDR II SDRAM
Disk Interface: SATA-II (3 Gb/sec)
Number of Disk Channels: 16
Hot Swap Disk Tray: 16 x 3.5" hot-swappable trays
Hot Swap Fan: 2 x 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, 3, 5, 6, 10, 30, 50, 60, NRAID
Disk Groups: Max. 16
Logical Disk: Max. 32
Data Rebuild: Automatic Data Regeneration
RAID Features: Global and local hotspare, Multiple Host ID,
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 CGI-based 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: 447 (W) x 565 (D) x 132 (H) mm
Physical Weight: 22 Kgs (without drives)
Packed Dimensions: 609 (W) x 790 (D) x 466 (H) mm
Packed Weight: 32 Kgs (without drives)
- Innovate New Array Structure
The JanusRAID2 series features a new innovate array
structure that hierarchically organizes storage objects. With this
structure, physical drives are combined into Disk Groups (DG). Disk Groups
are subdivided into Logical Disks (LD) where arrays are created. Lastly,
Logical Disk can be combined or stripped together to form Volumes. Either
volumes or LD can be pointed to a LUN which are then presented to the host
computer.
- Online Expansion and Defragmentation of Disk Groups
New physical disks can be added by expansion of a Disk
Group (DG) while the unit remains online. During the process of expanding
Disk Groups, defragmentation can be selected to move unused capacity to
the ending LBA of a Disk Group. Defragmentation can also be selected at
anytime there is unused storage space residing between Logical Disks.
- Online Expansion and Shrinking of Logical Disks
Logical Disk (LD) Online Expansion can increase the
capacity of an online LUN, instead of having to create a separate
partition for unused capacity or capacity gained from Disk Group
Expansion; now your storage can dynamically grow as your demands grow. In
the event of overestimating requirements for Logical Disk capacity,
shrinking can be used reduce the allocated storage of a Logical Disk.
- JBOD Expansion
This newly added feature provides users the option to
attach a JBOD unit to expand the capacity of their Arena Maxtronic storage
solution. By allowing the SA-6651E to control the RAID-less JBOD units
helps reduce the total cost of ownership.
- Web-based GUI
An embedded CGI-based GUI (graphic user interface)
management interface can be accessed through a web browser. The GUI allows
users to easily setup RAID arrays, lun mapping, etc. and also provides
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.
- Array Recovery Utility
The JanusRAID2 series now provides an Array Recovery
Utility (ARU) that can aid a user in the event of multiple drive failures
corrupting the RAID array of a Logical Disk and/or volumes. The ARU
enables user’s online recovery of lost disk members of a Disk Group, and
will automatically recover Logical Disks and Volumes.
- Array Roaming Utility
The Array Roaming Utility gives users the ability to easily
migrate drives between slots or RAID subsystems. This user friendly
utility is built into the GUI of the JanusRAID2 to simplify storage
management.
- Performance Monitoring
A performance monitoring utility has been designed to the
needs of our users. Hard disk drives, controller cache, LUNs, and host
ports can be monitored concurrently with extensive detail. These
statistics allow users to view current average, accumulated, maximum and
minimum of the aforementioned items.
- Event Monitoring
Event logging has been improved with many new features and
functions that are now available in the JanusRAID2 series. Event logs are
now categorized based on their severity level and type. Entire logs are
stored in non-volatile memory to prevent lost information after power has
been lost or removed. Another new function is the ability to download the
logs in a user readable format which can be sent to technical support for
easy analysis. A system administrator can be notified of events, based on
severity level, by configuring redundant email servers, or multiple SNMP
servers.
- Task Management
With the aid of an onboard Real Time Clock (RTC) that is
sync-able with an NTP server. Tasks can be scheduled to run once or
periodically during off peak hours to prevent the least amount of impact
on the JanusRAID2 storage subsystem. Progress of the tasks is easily
viewed from the GUI interface and can be stopped manually at anytime.
- Selective Initialization
There are three initialization methods supported: Regular,
Background, and No Initialization; and two initialization modes: Parallel
and Sequential. Regular Initialization will initialize the array, but not
allow host access until the initialization process has been completed.
Background Initialization will begin the initialization function, but will
run in the background, allowing an array to be available for access
immediately. No Initialization will bypass the initialization function,
and bring an array online instantly. When initializing an array in
Parallel mode, multiple arrays will be initialized together
simultaneously, while in Sequential mode, arrays will be initialized in a
user specified order.
- Selective Rebuilding
The standard rebuilding mode used is Parallel, where
multiple arrays are rebuilt at the same time. However the JanusRAID2
supports a new mode, sequential and prioritized. In sequential mode a
specific array, such as a mission critical array can be given more
resources to enable a quicker rebuild thus decrease time in degraded mode.
- Regenerate Parity
A simplified feature of Disk Scrubbing (DS), Regenerate
Parity will regenerate the parity of a Logical Disk(s) in a Disk Group
without a parity check.
- PathGuard MPIO
Arena Maxtronic’s PathGuard MPIO software uses redundant
physical paths to create a logical path to a storage subsystem to enables
greater performance and reliability. PathGuard supports four different
options: Read/Write I/Os, Read/Write Bytes, Command Queue, and Round
Robin.
- Read and Write Performance Optimization
With ongoing research in performance optimization an
adaptive pre-read algorithm has been developed that is able to track and
recognize IO behaviors that will adjust controller cache accordingly.
Pre-read depth and multipliers are adjustable to enable fine tuning for
your specific application. Write cache has several options; including
cache flush period, write merging, and sorting, that are also user
configurable to further fine tune performance.
- 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.
- Global or local spare disk
With the new JanusRAID2 storage structure, local and global
spares can be configured. Local spares will belong to specific Disk Groups
and will only replace faulty drives in a specific Disk Group. Meanwhile,
Global Spares will replace faulty disk in any available Disk Group.
- 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 LUN
The JanusRAID2 series natively supports 16byte CDB to allow
for easy creation of LUNs greater than 2 terabytes.
- Background 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 background
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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