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| Chapter 2: Configuring the LSI MegaRAID Settings | |
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| Item | Description |
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| Rebuild Rate | The rebuild rate determines the percentage of system re- |
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| sources that will be applied toward rebuilding a drive that |
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| has failed. Enter a number between 1 and 100 to control |
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| the rebuild rate. |
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| Patrol Read | A patrol read monitors physical disks to find and resolve |
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| Rate | any problems that may result in disk failure. Enter a num- |
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| ber between 0 and 100 for the patrol read rate. |
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| BGI Rate | The BGI (Background Initialization) Rate determines the |
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| rate at which virtual drives are initialized in the back- |
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| ground. Enter a number between 0 and 100. |
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| Cache Flush | Enter a value in the field to specify (in seconds) how often |
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| Interval | the system will flush the cache memory. |
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| CC Rate | The CC (Check Consistency) Rate determines the rate at |
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| which consistency check scans are performed on a disk to |
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| determine if data is corrupted. Enter a number between 0 |
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| and 100. |
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| Spinup Drive | Enter a number to control the amount of drives that spin up |
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| Count | at one time. |
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| Reconstruction | The reconstruction rate determines the rate at which a |
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| Rate | virtual drive is reconstructed. Enter a number between 0 |
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| and 100. |
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| Spinup Delay | After the RAID controller completes initialization, the spinup |
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| delay is the initial amount of seconds that pass before the |
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| first disk interrogation request is sent to the array. |
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| NCQ | Enable NCQ (Native Command Queuing) to increase |
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| the performance of an HDD by allowing it to optimize the |
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| operation sequence in retrieving outstanding requests and |
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| executing read/write commands. |
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| Spin Down | This item indicates how long a |
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| Delay Time | before the next command is executed |
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| Stop CC On | Select Yes to stop a consistency check when an error is |
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| Error | encountered. |
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| Schedule CC | Use this item to schedule a consistency check. |
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| Maintain PD | Enable this feature to track bad PDs (Physical Disk) across |
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| Fail History | reboot. |
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| Stop on Error | Enable this feature to stop system POST if an error is |
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| detected. |
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| Controller | This item enables the controller BIOS. The default is |
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| BIOS | Enabled. |
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| Disk Activity | Enable this option if you want disk activity indicated by a |
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| green activity LED. The disks must be installed in an enclo- |
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| sure for this option to work. |
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