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CERC ATA100 DRIVER

The main benefit is that you are not restricted to sequential or contiguous logical drives when you create logical drives. See Selecting the Configuration Method for more information. If logical drives have already been configured when you select Easy Configuration , the configuration information is not disturbed. A device selection window displays the devices connected to the current controller. Rebuilding Failed Hard Drives. To enable an automatic rebuild, you must configure one or more hard drives as hot spares when you configure the array. It does not affect the Read-ahead cache.

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To enable ata10 automatic rebuild, you must configure one or more hard drives as hot spares when you configure the array. It does not affect the Read-ahead cache. If the criteria are not met, the Span setting makes no difference for the current logical drive.

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This deletes the logical drive and makes the space it occupied available for you to make another logical drive. Hot key information appears at the bottom of the screen. If all read requests are random, the algorithm reverts to No Read-ahead ; however, all requests are still evaluated for sequential operation. The main benefit is that you are not restricted to sequential or contiguous logical drives when you create logical drives. For example, if the previous logical drive used only a part of the space in an array, the current logical drive size is set to the remaining space by default.

You can set this parameter to Read-aheadNo Read-ahead or Adaptive.

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All statements or claims regarding the properties, capabilities, speeds or qualifications of the part referenced in this document are made by the supplier and not by Dell. Hot key information displays at the bottom of the screen.

The drive indicator for the hot spare hard drive has changed to REBLD A [ array number ]-[ drive number ], indicating the hard drive being replaced by the hot spare. The default is Write-through. However, if the failure is a read error on a data drive, the bad data aata100 is reassigned with the generated data. By default, the logical drive cer is set to all available space in the array s being associated with the current logical drive, accounting for the Span setting and for partially used array space.

The information contained in this document, including all instructions, cautions, and regulatory approvals and certifications, is provided by the supplier and has not been independently verified or tested by Dell. Hot spares are physical drives that are powered up along with the RAID drives and usually stay in a standby state.

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See Initializing Logical Drives for more information. The logical drive configuration screen appears.

Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own. After you delete a logical drive, you can create a new one. See Designating Drives as Hot Spares for more information. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. It does not display during normal operation. The default stripe size is 64 MB. The configuration utility provides a list of configurable arrays where there is a space to configure.

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If a hard drive fails in an array that is configured as a RAID 1 or 5 logical drive, you can recover the lost data by rebuilding the drive. In Write-back caching, the controller sends a data transfer completion signal to the host when the controller cache has received all the data in a transaction. The top of the screen displays the logical drive that is currently being configured as well as any existing logical drives. You cannot set the size when using spanning.

When you select any configuration option, a list of all physical devices connected to the current controller appears. If you use drives with different capacities in an array, all drives in the array are treated as if they have the capacity of the smallest drive in the array.

The logical drive can occupy space in only one array. You can set the write policy to Write-back or Write-through. Selecting New Csrc erases the existing configuration information on the selected controller. If a hard drive fails and there is no hot spare with enough capacity to replace the failed drive, you must shut down the system, replace the hard drive, and run the BIOS Configuration Utility, WebBIOS, or Array Manager to perform the rebuild manually.

Try to use drives of the same capacity in a specific array.