Oracle Video server, Manual

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Oracle Video Server (OVS)
System Architecture 2-9
In a striped volume, the set of stripes that have the same logical location on the
disks of a RAID set is called a RAID stripe.
Figure 2–4 shows a RAID stripe within
the dotted rectangle.
Figure 2–4 A RAID stripe
The MDS designates one stripe in each RAID stripe to store parity information,
technically the "bitwise exclusive OR" of the other stripes. The disk containing the
parity stripe rotates from one RAID stripe to the next as shown in
Figure 2–5 .
Figure 2–5 A RAID set with parity stripes
The amount of data contained in a RAID stripe is:
stripesize x RAIDsize
Since one of the stripes in the RAID stripe stores parity information, the amount of
non-redundant data stored in a RAID stripe is:
stripesize x (RAIDsize–1)
Parity
Data