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Originally Posted by STEED
SATA Operation setting
What is the different between RAID Autodetect/ANCL and RAID Autodetect/ATA
I'm no expert so I would be grateful to know what this would do if I changed the first one to the second one, and there meaning as well.
Thanks
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Without checking my A+ Manuel:
When using 2 or more harddrives in close conjunction is a RAID.
For Example:
RAID 0: Stripe: 2 Hard Drives - 1 piece of data, 1 half is written to each drive so each drive only spins half as much to read data. Both drives read half and report it back to whatever hardware/software requested information. Supposivdly twice as fast as a regular HD.
Raid 1: Mirror: Same data written to two HDs. If one of your HDs has a hardware malfunction, you have all your data exactly stored on the other drive for data redundency.
RAID 3/5: Mirror/Stripe/Parsec: RAID 3 and RAID 5 are basicly the same thing. Both RAID 0 - 1 combined. BUT - in a RAID 3, 1 peice of data is broken up into 2 pieces, 2 of the HDs get 1 piece, and the 3rd drive gets a Parsec Bit. The Pasec bit is written on a different drive for each byte of data. So it stripes the data across three drives and sets the parsec bit in the empty space. The parsec bit is there for rebuilding one of the HDs if it fails. You have three, 1 has a mechanical problem, you pull it out and replace it, the other two HDs place all nessasary data onto the new drive for you. "Data Redundency"
RAID 5 works in the same way but with 5 HDs for added protection.
Any other RAID numbers above that use tape drives and such and were not on Microsofts exams. To use a RAID your motherboard must support it and your HDs must be exactly the same size/type/speed/brand.
If you don't use a raid just ignore it, it will only check at POST. (Power on self test) and it won't slow you down any inside windows. It doesnt hurt to disable it though, doesnt help either...
If you are running a RAID, and its working, I wouldnt mess with it because the detection is working already, and no need to fix something that isnt broke.