Lenovo ThinkServer RD350 (English) User Guide and Hardware Maintenance Manual - Page 60

Configuring RAID, About RAID

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3. Check and configure the BIOS settings for your specific needs. See "Using the Setup Utility program" on page 39. • Using the BIOS recovery jumper 1. Remove all external media from the drives and turn off all attached devices and the server. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the server. 2. Prepare your server. See "Removing or extending the server from the rack cabinet" on page 53. 3. Remove the server cover. See "Removing the server cover" on page 53. 4. Locate the BIOS recovery jumper on the system board. See "System board jumpers" on page 32. Then, remove any parts and disconnect any cables that might impede your access to the jumper. Note: Do not remove the memory modules or microprocessors. 5. Remove the jumper cap from the jumper cap storage. See "System board jumpers" on page 32. 6. Note the orientation of the jumper cap and then install the jumper cap on the BIOS recovery jumper. 7. Connect the server to an ac power source. The server turns on and then turns off automatically. 8. Move the jumper cap back to the jumper cap storage. See "System board jumpers" on page 32. 9. Wait for several minutes. When the BIOS recovery process is completed, the server turns on automatically. 10. Ensure that the Setup Utility program starts normally. See "Starting the Setup Utility program" on page 39. Then, disconnect the server from the ac power source. 11. Reinstall any parts and reconnect any cables. Then, reinstall the server cover. See "Completing the parts replacement" on page 128. 12. Connect the server to an ac power source and turn on the server. Check and configure the BIOS settings for your specific needs. See "Using the Setup Utility program" on page 39. Note: If you cannot recover the BIOS after using the instructions in this topic, the BIOS read-only memory (ROM) might be damaged. You must replace the system board. Contact the Lenovo Customer Support Center. Configuring RAID This topic provides information about RAID and the utility programs that are available for you to configure RAID. This topic contains the following information: • "About RAID" on page 46 • "Configuring RAID using the Lenovo ThinkServer Deployment Manager program" on page 48 • "Configuring the advanced SATA or SAS hardware RAID" on page 48 About RAID RAID, an acronym for Redundant Array of Independent Disks, is a technology that provides increased storage functions and reliability through redundancy. This is achieved by combining multiple hard disk drives into a logical unit, where data is distributed across the drives in one of several ways called RAID levels. When a group of independent physical hard disk drives are set up to use RAID technology, they are in a RAID array. This array distributes data across multiple hard disk drives, but the array appears to the host server as one single storage unit. Creating and using RAID arrays provides high performance, such as the expedited I/O performance, because several drives can be accessed simultaneously. 46 ThinkServer RD350 User Guide and Hardware Maintenance Manual

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3. Check and configure the BIOS settings for your specific needs. See “Using the Setup Utility
program” on page 39.
•
Using the BIOS recovery jumper
1. Remove all external media from the drives and turn off all attached devices and the server. Then,
disconnectallpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedto
the server.
2. Prepare your server. See “Removing or extending the server from the rack cabinet” on page 53.
3. Remove the server cover. See “Removing the server cover” on page 53.
4. Locate the BIOS recovery jumper on the system board. See “System board jumpers” on page 32.
Then,removeanypartsanddisconnectanycablesthatmightimpedeyouraccesstothejumper.
Note:
Do not remove the memory modules or microprocessors.
5. Remove the jumper cap from the jumper cap storage. See “System board jumpers” on page 32.
6.NotetheorientationofthejumpercapandtheninstallthejumpercapontheBIOSrecoveryjumper.
7. Connect the server to an ac power source. The server turns on and then turns off automatically.
8. Move the jumper cap back to the jumper cap storage. See “System board jumpers” on page 32.
9. Wait for several minutes. When the BIOS recovery process is completed, the server turns on
automatically.
10. Ensure that the Setup Utility program starts normally. See “Starting the Setup Utility program” on
page 39. Then, disconnect the server from the ac power source.
11. Reinstall any parts and reconnect any cables. Then, reinstall the server cover. See “Completing
the parts replacement” on page 128.
12. Connect the server to an ac power source and turn on the server. Check and configure the BIOS
settings for your specific needs. See “Using the Setup Utility program” on page 39.
Note:
IfyoucannotrecovertheBIOSafterusingtheinstructionsinthistopic,theBIOSread-onlymemory
(ROM) might be damaged. You must replace the system board. Contact the Lenovo Customer Support
Center.
Configuring RAID
ThistopicprovidesinformationaboutRAIDandtheutilityprogramsthatareavailableforyoutoconfigure
RAID.
This topic contains the following information:
• “About RAID” on page 46
• “Configuring RAID using the Lenovo ThinkServer Deployment Manager program” on page 48
• “Configuring the advanced SATA or SAS hardware RAID” on page 48
About RAID
RAID, an acronym for Redundant Array of Independent Disks, is a technology that provides increased
storagefunctionsandreliabilitythroughredundancy.Thisisachievedbycombiningmultipleharddiskdrives
intoalogicalunit,wheredataisdistributedacrossthedrivesinoneofseveralwayscalledRAIDlevels.
When a group of independent physical hard disk drives are set up to use RAID technology, they are in a
RAID array. This array distributes data across multiple hard disk drives, but the array appears to the host
server as one single storage unit. Creating and using RAID arrays provides high performance, such as the
expeditedI/Operformance,becauseseveraldrivescanbeaccessedsimultaneously.
46
ThinkServer RD350 User Guide and Hardware Maintenance Manual