Adaptec AAA-133U2 - AAA 133 RAID Controller Hardware Manual
Also see for AAA-130U2 SERIES: Installation and hardware guide
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3-3Creating an Array With the ARRAYCONFIG U2 Utility4 When the next screen appears, select the type of array youwant to create:– Select Optimized for Performance (RAID 0) if you wantthe fastest possible data input and output from the newarray. This kind of array does not have special data protec-tion features, however. When prompted, type the numberof disks you want in this array.– Select Optimized for Data Protection (RAID 1) if yourmain concern is to protect the files on the array from diskfailure. This kind of array safeguards files in the array evenif one of the array disks fails. (This kind of array has twodisks by definition, so you will not be prompted to enterthe number of disks you want in the array.)– Select Performance and Data Protection with Parity(RAID 5) if you want fast performance and data protection,and you have three or more disks available for the array.This kind of array contains redundant (parity) data distrib-uted across all disks in the array. If any one disk fails, datacan be reconstructed from the parity information. If a seconddisk fails before the array has been reconstructed, all data islost. The actual usable data capacity of the array is equal toone less than the total number of disks. (One disk’s worth ofcapacity is needed to hold the parity information.)– Select Performance and Data Protection with Mirroring(RAID 0/1) if you want fast performance and data protec-tion, and have an even number of disks available for thearray. This kind of array stripes and mirrors data on two ormore pairs of disks. If one disk in a pair fails, data is avail-able. The actual data capacity of the array equals half thetotal available disk space.5 When the next menu appears, select the type of applicationsthat you will run on your system. (Select Others if you are notsure what type of applications you will use.) ARRAYCONFIGU2 will use your answer to create the best array configurationfor your applications. |
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