Accusys ACS-77100 User Manual
ACS-77100 RAID controller
User Manual
User’s Manual
eface ..........................................................................................................................3
Pr
Notice......................................................................................................................3
Trademarks..............................................................................................................3
About This document................................................................................................4
Symbols used in this document..................................................................................4
1. In
troduction to the ACS-77100.....................................................................................5
1.1. Overview...........................................................................................................5
1.2. System Structure ...............................................................................................5
1.3. Understanding RAID Levels.................................................................................6
1.3.1. RAID 0 (striping) ......................................................................................6
1.3.2. RAID 10 (striping and mirroring)................................................................7
1.3.3. RAID 5 (striping with parity) and RAID 5+hot spare ....................................8
2. Build a
3. S
4. Manag
RAID Solution ..................................................................................................9
2.1. Hardware Requirement:......................................................................................9
2.2. LCD Panel Operations.......................................................................................10
et up the RAID solution............................................................................................11
3.1. Setting the RAID Level .....................................................................................11
3.1.1 RAID Level configurations ........................................................................12
3.2.
Creating an Array.............................................................................................13
3.2.1 Enable/Disable Over 2TB capacity.............................................................13
3.2.2 Creating an Array ....................................................................................13
3.3.
Setting the Time and Date by LCD.....................................................................14
3.4. Connecting ACS-77100 to the Host computer.....................................................15
3.5. Formatting and Partitioning the AC S-77100........................................................15
3.5.1. Windows Users.......................................................................................15
3.5.2. Formatting drive over 2TB capacity on Windows Vista................................17
ement.............................................................................................................18
4.1. LCD displayed Messages...................................................................................18
4.1.1. Booting Messages...................................................................................18
4.1.2. Set over 2TB Capacity Messages..............................................................18
4.1.3. Initialization Messages ............................................................................19
4.1.4. System Ready Messages..........................................................................19
4.1.5. Rebuild Messages...................................................................................20
4.1.6. Error Messages.......................................................................................20
4.2.
StorConn GUI introduction................................................................................21
4.2.1. RAID status monitoring window......................................................................22
5. U
pdate Firmware.......................................................................................................23
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.1. Firmware updating steps ..................................................................................23
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6. T
rouble Shooting.......................................................................................................26
7. FAQ..........................................................................................................................27
8. Contact Accusys........................................................................................................28
Accusys, Inc...........................................................................................................28
Accusys U.S.A., Inc.................................................................................................28
Accusys China, Inc..................................................................................................28
Accusys EU B.V ......................................................................................................29
Accusys Korea, Inc. ................................................................................................29
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Preface
Notice
Product fe
notice.
atures and specifications described in this manual are subject to change without
User’s Manual
The man
from the performance or use of the information contained herein.
Trademarks
Accusys and
service marks or registered trademarks and/or service marks of Accusys, Inc.
Microsoft, Windows, Windows NT, MS-DOS are either trademarks or registered
Microsoft Corporation. Intel and Pentium are registered trademarks of Intel Corpo r ation . Other
product and company names mentioned herein may be trademarks and/or service marks of
their respective owners.
All contents of this manual
exclusive property of Accusys, Inc. and shall not be copied, tr ansferred, photocopied, tran slated
on paper, film, electronic media, or computer-readable form, or otherwise reproduced in any
way, without the express written permission of Accusys Inc.
Manual version 1.0
© Copyright 2006 A
All rights reserved.
ufacturer shall not be liable for any damage, or for the loss of information resulting
the names of Accusys products and logos referenced herein are trademarks and/or
trademarks of
are copyrighted by Accusys. The information con tained herein is the
ccusys, Inc.
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User’s Manual
About This document
This document discusses how to properly design your RAID solution when using the ACS-77100
RAID controller, and guides you to configure the RAID controller. Customer should have a
working knowledge of RAID planning and data storage.
Symbols used in this document
Important information that users should be aware of is indicated with the following icons:
Caution
This icon indicates the existence of a potential hazard that
could result in personal injury, damage to your equipment or
loss of data if the safety instruction is not observed
Note
This icon indicates useful tips on getting the most from your
RAID controller.
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User’s Manual
1. Introduction to the ACS-77100
1.1. Overview
The ACS-77100 RAID controller provides RAID 0 (striping), RAID 10 (Striping and mirroring)
and RAID 5 (striping with parity) for you to construct a disk array op timized for performance or
reliability. By connecting the SATA cables between the ACS-77100 and the disks, a RAID
solution can be easily built.
The ACS-77100 controller is equipped with Java-based GUI (graphical user interface)
monitoring program, by which users can easily monitor the RAID status from web browsers at a
remote site. The monitoring program is also capable of sending out notification mail to users so
that users can always be informed of the updated status of the device.
1.2. System Structure
An internal or external RAID subsystem can be built by integrating RAID controller (with LCD
module), back-plane (or disk board f or disk hot-swapp ing), connectors for out -band connection
(eSA TA/SATA host connector, DB9 connector for COM port), a selector for RAID level
configuration, power supply, fan and all internal cables. Custom er should provide the materials
beside the RAID controller.
PWR1 Power connector CN4 Button connector CN7 Host I/F
CN2 BP I/F (LED, I2C) CN5 Disk I/F CN8 COM and RAID configuration I/F
CN3 LCD connector CN6 Dick I/F CN9 FAN connector
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1.3. Understanding RAID Levels
1.3.1. RAID 0 (striping)
RAID 0 links each drive in the array to from one large drive.
Storage capacity is determined by the smallest drive in the arra y .
This capacity is then applied to format all other drive in the
array.
When using a 40GB, 50GB and a 60GB drive in a RAID 0 array,
your system will have, in effect, one 120GB drive (40GB x 3)
The diagram above represents the writing of data on a RAID 0
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array composed of four disks connected to the controller. Data
block are distributed across all disks in the array.
Characteristics
RAID 0 implements a striped disk array, the data is broken down into blocks and each
block is written to a separate disk drive.
I/O performance is greatly improved by spreading the I/O load across many channels and
drives.
Fastest and most efficient array type but offers no fault-tolerance.
Recommended Uses
Video production and editing.
Image editing.
Pre-press applications.
Applications requests high-bandwidth.
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1.3.2. RAID 10 (striping and mirroring)
RAID 0+1 combines mirroring and striping functions on a minimum
of four hard disks. Mirroring provides full redundancy and protects
data in case of multiple drive failure (providing that data on one of
each mirrored pair of drives is intact).
The diagram shown represents the writing of data on a RAID 0+1
array composed of four DISKS connected to the controller. The
controller creates two matching RAID 0 arrays on four DISKS
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Characteristics
This configuration provides optimal speed and reliability.
Requires even number of disks (minimum 4 disks)
Recommended Uses
Imaging application.
General Fileserver.
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User’s Manual
1.3.3. RAID 5 (striping with parity) and RAID 5+hot spare
RAID 5 uses a mathematical expression that compares data from
three drives and calculates a fourth piece of data called “parity”
which is saved on a fourth drive. Should one of the drives failed ,
parity data can be used to rebuild the failed data. Under RAID 5,
parity data is stored across all drives in the array. This maximizes
the amount of storage capacity available from all drives in the
array while still providing data redundancy. RAID 5 requires at
least three drives. The ACS-77100 allows user to set RAID 5 with
three drives and the fourth drive as a hot-spare driv e ready to be
used for rebuilding data in case one of the other drives fails.
The diagram above represents the writing of data on a RAID 5 array composed of four disks
connected to the controller. Parity blocks are represented by the letter P
Characteristics
Each entire data block is written on a data disk. Parity for blocks in the same rank is
generated on Writes, recorded in a distributed location and checked on Reads.
Highest Read data transaction, medium Write data transaction rate.
Relatively low ratio of ECC (Parity) disks to data disks means high efficiency (compared to
other RAID levels).
Good aggregate transfer rate.
Recommended Uses
File and application servers.
Database servers.
Web, Email servers.
Internet server
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