Adaptec ARO-1130U2 Installation And Hardware Manual page 27

4
When the next screen appears, select the type of array you
want to create:
– Select Optimized for Performance (RAID 0) if you want
the fastest possible data input and output from the new
array. This kind of array does not have special data protec-
tion features, however. When prompted, type the number
of disks you want in this array.
– Select Optimized for Data Protection (RAID 1) if your
main concern is to protect the files on the array from disk
failure. This kind of array safeguards files in the array even
if one of the array disks fails. (This kind of array has two
disks by definition, so you will not be prompted to enter
the number of disks you want in the array.)
– Select Performance and Data Protection with Parity
(RAID 5) if you want fast performance and data protec-
tions, and you have three or more disks available for the
array. This kind of array contains redundant (parity) data
distributed across all disks in the array. If any one disk fails,
data can be reconstructed from the parity information. If a
second disk fails before the array has been reconstructed, all
data is lost. The actual usable data capacity of the array is
equal to one less than the total number of disks. (One disk's
worth of capacity 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 the
array. This kind of array stripes and mirrors data on two or
more pairs of disks. If one disk in a pair fails, data is avail-
able. The actual data capacity of the array equals half the
total available disk space.
5
When the next menu appears, select the type of applications
that you will run on your system. (Select Others if you are not
sure what type of applications you will use.) ArrayConfigU2
will use your answer to create the best array configuration for
your applications.
Creating an Array With the ArrayConfigU2 Utility
4-3