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Chapter 5 NVIDIA RAID Introduction
Summary of RAID Configurations
RAID Arrays
This section describes the following types of RAID arrays that NVIDIA RAID
supports:
• RAID 0
RAID 0 defines a disk striping scheme that improves the disk read and write
times for many applications.
• RAID 1
RAID 1 defines techniques for mirroring data.
• RAID 0+1
RAID 0+1 combines the techniques used in RAID 0 and RAID 1 arrays.
• Spanning (JBOD)
JBOD provides a method for combining drives of different sizes into one large
disk.
Array
RAID 0
RAID
0+1
JBOD
100% data
redundancy.
Drawbacks
# Hard Disks
multiple
4+
multiple
Fault Tolerance
None
NVIDIA RAID
Optimized for both 100%
data redundancy and
performance. Allows
spare disks.
Combines and uses the
capacity of odd size
drives.
D e c r e a s e s p e r f o r -
mance because of the
difficulty in using drives
concurrently or to opti-
mize drives for differ-
ent uses.
2
Yes
Yes
No
No fault tolerance.
Advantages
High data throughput.
RAID 1
Requires two drives
for the storage space
of one drive.
Requires two drives for
the storage space of
one drive—the same
as RAID level 1.
