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Фрагмент инструкции
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 Corporation. Otherproduct 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, transferred, photocopied, translated 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. 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. 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 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 optimized 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 for disk hot-swapping), connectors for out-band connection (eSATA/SATA host connector, DB9 connector for COM port), a selector for RAID level configuration, power supply, fan and all internal cables. Customer 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 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 array. 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 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. 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 Characteristics .. This configuration provides optimal speed and reliability. .. Requires even number of disks (minimum 4 disks) Recommended Uses .. Imaging application. .. General Fileserver. 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 s...
Эта инструкция также подходит к моделям:Сетевое оборудование - RAID Controller ACS-77100 (847.21 kb)
Сетевое оборудование - RAID Controller ACS-77100 (847.21 kb)
Сетевое оборудование - RAID Controller ACS-77100 (847.21 kb)
Сетевое оборудование - RAID Controller ACS-77100 (847.21 kb)