Archived from groups: alt.comp.hardware.pc-homebuilt (More info?)
"Erik Janssen" <firstname.lastname@example.org> wrote in message
> Can anyone tell me what RAID5 means?
> I know that RAID5 are used for secure backup of data, but what if I use
> example 4 harddisks each with 300GB as a RAID5 solution. What will the
> diskspace be then?
> Best Regards
With 4 disks, Raid5 Uses data on 3 disks and parity on fourth, but
parity is spread over all drives to aid performance. Capacity is 3D where D
is drive storage. If one drive dies, all data is still available. When
faulty drive is replaced, array rebuilds onto new drive to restore original