MSI P55 GD80 - Motherboard - ATX User Manual page 130

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Intel SATA RAID Intel SATA RAID
(1) Configure Volume
Here you can configure the new RAID volume by enterng the volume name, selectng
the RAID level and strp sze.
■ RAID Volume Name:
A desred RAID volume name needs to be typed n where the "Volume_0000" text
currently appears above. The RAID volume name has a maxmum lmt of 16 char-
acters. The RAID volume name must also be n Englsh alphanumerc ASCII char-
acters.
■ RAID Level:
Select the desred RAID level:
RAID 0 (Performance) :
A volume optmzed for performance wll allow you to access your data more quck-
ly.
RAID 1 (Redundancy) :
A volume optmzed for data redundancy wll provde you wth a realtme duplcate
copy of your data. Note: Only half of the avalable volume space wll be avalable for
data storage.
RAID 5 (Useful) :
RAID 5 can be used on three or more dsks, wth zero or more spare-dsks. The
resultng RAID-5 devce sze wll be (N-1)*S, where N s the how many drve, S s the
sze of the smallest drve n the array. If one of the dsks fal, all data are stll ntact.
It can rebuld the dsk from the party nformaton. If spare dsks are avalable, recon-
structon wll begn mmedately after the devce falure. If two dsks fal smultane-
ously, all data are lost. RAID-5 can survve one dsk falure, but not two or more. Both
read and wrte performance usually ncrease, but can be hard to predct how much.
Reads are smlar to RAID-0 reads, wrtes can be ether rather expensve (requrng
read-n pror to wrte, n order to be able to calculate the correct party nformaton),
or smlar to RAID-1 wrtes. The wrte efficency depends heavly on the amount of
memory n the machne, and the usage pattern of the array. Heavly scattered wrtes
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