DACCF Configuration Utility
The DACCF utility is included with the AcceleRAID™ 250 Controller. The AcceleRAID™ 250 supports various versions of RAID technology (referred to as RAID levels). To use any RAID level, you must configure the RAID controller using the DACCF Configuration Utility prior to installing your Network Operating System. For an explanation of this utility, refer to the Disk Array Controller Configuration Utilities Manual that was shipped with the controller. Chapter 2 (Preparing the Array) covers array hardware preparation, configuration, and initialization. After completing the steps in Chapter 2, you can install your Network Operating System.
Factory RAID Configurations with SCSI Hard Drives
Number of | RAID Level | Hard Drives |
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Hard Drives | Configured | in Array | Description |
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1 | JBOD | 1 | JBOD (RAID 0) JBOD is an acronym for Just a |
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| Bunch Of Disks. Each drive can operate |
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| independently as with a common host bus adapter; |
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| or multiple drives may be spanned and seen as a |
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| single very large drive. No redundancy is provided. |
2 | 1 | 2 | Mirroring (RAID 1) Drives are paired and mirrored. |
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| All data is 100% duplicated on an equivalent drive |
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| (fully redundant). |
3 | 5 | 3 | Striping with Parity (RAID 5) Data is striped across |
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| several physical drives. Parity protection is used for |
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| data redundancy. |
4 | 5 | 3 plus 1 hot | Striping with Parity (RAID 5) Data is striped across |
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| spare drive | three physical drives. Parity protection is used for |
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| data redundancy. This drive is used as the “Hot |
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| Spare.” |
5 or more | _ | _ | The first four disks are as stated above. The |
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| remaining disks are not part of the array, but are |
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| ready to be configured. |
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