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RAID
User Guide
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© Copyright 2009 Hewlett-Packard Product notice Development Company, L.P. This user guide describes features that are Intel is a trademark of Intel Corporation in the common to most models. Some features U.S. and other countries. Microsoft, may not be available on your computer. Windows, and Windows Vista are U.S. registered trademarks of Microsoft Corporation. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in
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Table of contents 1 Introduction 2 RAID technology overview RAID terminology ................................................................................................................................. 2 RAID modes supported ........................................................................................................................ 3 The advantages of RAID modes supported ......................................................................................... 5 3 Operating s
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iv
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1 Introduction Until recently, there were limited options for most notebook PC users who wanted to protect their data from loss in the event of a hard drive failure. These options were; manually copying files to a backup drive or using cumbersome backup software. If users failed to perform one of these mundane tasks prior to a hard drive failure, they had to spend considerable time and money to recover even a portion of the data on the drive. Server and desktop computer users have long enjoyed t
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2 RAID technology overview This chapter defines the terms used in this guide and describes the RAID technologies supported by select HP Business Notebook PCs. RAID terminology Some of the terms in the following table have a broader meaning, but they are defined in relation to the RAID implementation described in this guide. Term Definition Fault tolerance The ability of the computer to continue to operate if one drive fails. Fault tolerance is often used interchangeably with reliability, but the
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RAID modes supported The RAID modes supported by HP Business Notebook PCs include RAID 0, RAID 1, and Intel® Rapid Recover Technology (RAID 1 enhanced) as described below. Each RAID mode requires two SATA HDDs. This can be accomplished by inserting a second SATA hard drive into the Upgrade Bay or eSATA port (if available) of the notebook PC, or in the SATA swappable bay of the HP Advanced Docking Station (see Devices supported on page 6). RAID 5 and RAID 10 are not supported. RAID 0 RAID 0 strip
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RAID LEVELS Function/Applications Advantages/Disadvantages Applications: Disadvantages: ● Accounting Only half of the total drive capacity can be used for ● Payroll storage. ● Financial Storage space may be wasted if the capacities of the primary and recovery HDDs are different (see HP SATA drive option kits on page 6). RAID IRRT Function: Advantages: Identical (mirrored) data is Provides high fault stored on two drives. tolerance. Boosts the functionality of Users can choose to mirror RAID 1 wi
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The advantages of RAID modes supported Fault tolerance and performance are important terms to understand when choosing a RAID mode. Fault tolerance Fault tolerance is the ability of a RAID array to withstand and recover from a drive failure. Fault tolerance is provided by redundancy. Therefore, RAID 0 has no fault tolerance because it does not copy data to another HDD. With RAID 1 and IRRT, one drive can fail without causing the array to fail. With IRRT, however, recovery of a single file or an
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3 Operating systems and devices supported Operating systems supported HP RAID supports 32-bit and 64-bit versions of Microsoft® Windows® XP Professional (SP1, SP2, and SP3), Windows Vista® (SP1 and SP2), and Windows 7 operating systems. Devices supported This section describes the devices supported for RAID migration, including the SATA drives, computers, and docking station. Device support is summarized in the following table and then explained in more detail below the table. External USB 2.0 S
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eSATA HDDs (select models only) External SATA, or eSATA, is an external interface that allows a SATA drive to achieve data transfer speeds up to 6 times that of a SATA drive using a standard USB 2.0 interface. The following illustration shows a supported notebook PC with a primary HDD (1) and an eSATA drive (2) connected to the eSATA port (select models only) to allow RAID IRRT. Regarding the capacity of the eSATA drive, the same recommendations apply as stated for secondary drives in the notebo
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HP Advanced Docking Station IRRT supports docking and undocking. It can be used to implement mirroring between the primary HDD (1) and an optional HDD in the SATA swappable bay of the HP Advanced Docking station (2). The following illustration shows an HP Advanced Docking Station with the recovery HDD in the SATA swappable bay that allows IRRT. 8 Chapter 3 Operating systems and devices supported
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4 Intel Matrix Storage Manager features The Intel Matrix Storage Manager supports the following features. Advanced Host Controller Interface The Advanced Host Controller Interface (AHCI) is a specification that allows the storage driver to enable advanced SATA features such as Native Command Queuing and hot plug capability. AHCI must be enabled in the system BIOS for these features to apply (see Enable RAID through the system BIOS (f10) on page 12). AHCI is enabled by default on supported HP Bus
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Intel Rapid Recover Technology Intel Matrix Storage Manager supports the following IRRT features. Mirror update policies With IRRT, you can determine how often the mirror HDD is updated: continuously or on-request. When using the continuous update policy, data on the primary drive is simultaneously copied to the mirror drive as long as both drives are connected to the system. If you undock the computer while using the docking station recovery drive, all new or revised data on the primary HDD is
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5 RAID volume setup The following instructions assume that a supported HDD is installed in the computer Upgrade Bay, in the SATA swappable bay of the docking station, or connected to the eSATA port of the notebook PC (see Devices supported on page 6). The basic RAID migration steps are as follows: ● Enable RAID through the system BIOS. ● Initiate RAID migration using the Intel® Matrix Storage Console. CAUTION: Make sure that the notebook PC is connected to AC power before initiating the followin
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Enable RAID through the system BIOS (f10) NOTE: The following procedures assume that you are using the HDD image that shipped with your computer. If a different image is installed on your computer, you must first enable RAID through the system BIOS (f10), and then install the operating system and all required drivers, including the Intel Matrix Storage driver. Then follow the steps in Initiate RAID migration using Intel Matrix Storage Console on page 14. Users must enable RAID capability through
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4. In the Device Configurations window, select RAID to the right of SATA Device Mode. Click Yes when the message displays: “Changing this setting may require reinstallation of your operating system. Are you sure you want to proceed?” NOTE: The HDD image supplied with your notebook PC contains drivers that allow you to switch between AHCI and RAID modes without reinstalling the operating system. If you use a different HDD image, you may need to reinstall the operating system. 5. Select File > Sav
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Initiate RAID migration using Intel Matrix Storage Console 1. Open the Intel Matrix Storage Console (Console) by selecting Start > All Programs > Intel Matrix Storage Manager > Intel Matrix Storage Console. NOTE: Windows Vista includes the User Account Control feature to improve the security of your computer. You may be prompted for your permission or password for tasks such as installing software, running utilities, or changing Windows settings. Refer to Windows Help for more information. The C
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of the following sections. If you are an advanced user and prefer more options, refer to Intel Matrix Storage Console advanced features on page 22. Migrating to RAID 1 1. In the left pane, select Protect data from a hard drive failure with RAID 1, and then click the icon beside Create a RAID 1 volume in the right pane. When the confirmation message displays, click Yes to begin the migration, or click No to cancel the migration. 2. The progress of the RAID 1 migration displays in a separate windo
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3. The hard drive and volume status display after the migration is complete. 4. Close the Console window, save any open files, and reboot the computer. Migrating to RAID 0 NOTE: Migrating to RAID 0 requires you to perform additional advanced steps, which includes copying data to an additional external USB HDD. Please read the entire RAID 0 migration procedure before you begin. 1. In the left pane, select Improve storage performance with RAID 0, and then click the icon beside Create a RAID 0 volu
