Adaptec AAA-UDMA Guía de instalación descargar pdf (Pagina 29)

3-3

Creating an Array With the ARRAYCONFIG UDMA Utility

Insert the

ARRAYCONFIG UDMA

diskette into drive

and

reboot the system. Wait for

ARRAYCONFIG UDMA

to start

automatically.

Read the text that appears on the initial screens. Press any key

to view the next screen, or press

Esc

to return to the previous

screen.

Select

xpress Setup

from the Setup Type Selection menu

When the next screen appears, select the type of array you

want to create:

– Select

Optimized for P

erformance (RAID 0)

if you want

the fastest possible data input and output from the new

array. This kind of array does not have data protection fea-

tures, however. When prompted, type the number of disks

you want in this array.

– Select

Optimized for D

ata 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 Par

ity

(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, 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 worth of

capacity is needed to hold the parity information.)

– Select

Performance and Data Protection with M

irroring

(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.

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