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We recommend you carefully read the "Notes on Use" section before handling the disk array controller. For more information on the Disk Array Controller (SAS) to which the BBU is connected, refer to the Disk Array Controller User Guide.
Keep this User's Guide handy for quick reference. Be sure to read this section carefully. NOTES ON USE - Always read the Notes - The following includes information necessary for proper and safe operation of the product. SAFETY INDICATIONS In the User Guide, "WARNING" or "CAUTION" is used to indicate a degree of danger. These terms are defined as follows: WARNING Indicates a hazard that may result in death or serious personal injury.
Symbols Used in This Manual and Warning Labels Cautions Indicates a general notice or warning that cannot be specifically identified. Indicates that improper use may cause an electric shock. Indicates that improper use may cause a personal injury. Indicates that improper use may cause fumes or fire. Prohibited Actions Indicates a general prohibited action that cannot be specifically identified.
Safety Notes Read the notes described below carefully to understand them, these will enable you to safely use your product. See "Safety Indications" described earlier for the descriptions of symbols. General WARNING Do not use the product for services involving human lives or requiring high eliability.
Power Supply and Power Cord Use CAUTION Disconnect the power cord(s) before installing or removing the product in/from the server. Make sure to power off the server and disconnect the power cord(s) from the power outlet before installing/removing the product in/from the server, or connecting with the peripheral devices.
Installation, Relocation, Storage, and Connection CAUTION Do not connect any interface cable when the power cord of the Disk Expansion Unit is plugged to a power source. Make sure to power off the server and unplug the power cord from a power outlet before connecting/disconnecting the interface cable.
Cleaning and Working with the Product WARNING Do not disassemble, repair, or alter the server. Do not attempt to disassemble, repair, or alter the product in any occasion other than those described in this User's Guide. Failure to follow this instruction may cause an electric shock or fire as well as malfunctions of the product.
If you find any missing or damaged components, contact your sales agent. Transportation To transport the BBU, remove it from the server as described in "Chapter 1 Overview" and put the BBU and all the accessories in the package used for the delivery.
Uninstall software applications before transferring the product. Recycling and Disposal The battery pack of the BBU is equipped with a recyclable lithium ion battery. To enable such valuable resources to be reused, contact your service representative or bring it to the nearest recycle agent.
Symbols Used in This Manual and Warning Labels..............3 Safety Notes ..........................4 Warning Labels ..........................8 Notes on Use - For correct operation of the BBU - ..............8 This Manual ..........................9 In the Package..........................9 Transportation..........................9 Third Party Transfer ........................
The BBU is an additional battery exclusively used for the Disk Array Controller (SAS). Connecting the BBU to the disk array controller can prevent data from being lost due to an unforeseen accident, including instantaneous power interruption (in the WriteBack mode).
3. Installation Flow The following shows the BBU installation flow. For more information, refer to the corresponding chapters. Start Chapter 1 Check BBU and accessories. Describes how to check the BBU and Check notes. the included accessories as well as installation notes.
5. Names and Functions of Sections This section describes the sections of the BBU. Front view Battery cell NiMH battery cell Battery cable Used to connect the battery cell to the memory module. Memory connector Insert the connector into the memory slot of the disk array controller.
Accessories Setup Date label (accessory) The label comes with the BBU. Fill in the year and month when you install the BBU in the disk array controller. Stick the label on the BBU surface for future reference. 6. Installation Notes Do not lay the BBU on a metallic plate, including the chassis of the server.
This chapter describes the installation of the BBU in the disk array controller. The procedure described here is the installation of the BBU in the Internal SAS HDD Disk Array Controller. It is similar to the installation of the BBU in the External SAS HDD Disk Array Controller. Check 1.
1-2. Putting Setup Date Label Fill in the year and month corresponding to the BBU installation date on the battery label coming with the BBU. Stick the label on the BBU surface. Fill in the year and month. 2005 Example) Y The battery life is about 2 years and varies depending on the environment of use and operating conditions.
2. Utility Check After the installation, check the connections and the settings of the BBU using the disk array controller management utility "MegaRAID Storage Manager " (called MSM hereafter). Boot the OS and start MSM. Make sure that the "Battery Backup Unit" icon appears in the Physical tab of MSM.
Change the Default Write Policy to "Write Back" if not specified. To change the Default Write Policy: 6-1. Select the Logical tab in the left frame of the window, and then select each "Virtual Disk" under the Logical tab. 6-2. Select the Set Virtual Disk Properties under the Operations tab in the right frame of the window, and change the Default Write Policy to Write Back.
Charge the BBU, and make sure that the Current Write Policy (indicating write cache operation status) is indicated as "Write Back." Logical Properties Default Write Policy Current Write Policy The battery cell you have purchased is not charged at all. In this case, the [Current Write Policy] in the [Properties] of the [Logical] tab is indicated as "Write Through"...
You can use MegaRAID Storage Manager™ (MSM) to do so. 2-2. BBU Life The BBU is equipped with a backup battery. The battery life is about 2 years, and varies depending on the environment of use and operating conditions.
Check Array Controller. Fill in the year and month of replacement on the Setup Date label that comes with the new BBU, and stick the label on the BBU surface. (See Section 1-2 for details.). Remove any existing Setup Date label, or make sure to stick the latest on top of the others.
Reconnect all the cables to the disk array controller. Replace the side cover and plug the power cords. Power on the server. Once the OS has booted, check whether the BBU is recognized correctly. Refer to "2. Utility Check" in "Chapter 2 Installing the BBU."...