Table of Contents
Advertisement
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
d i s k .
Summary of RAID Configurations
Advantages
Array
High data throughput.
RAID 0
100% data redund-
RAID 1
ancy.
Optimized for both
RAID
100% data redun-
0+1
dancy
and
per-
formance. Allows
spare disks.
Combines and uses
JBOD
the capacity of odd
size drives.
Chapter 5 NVIDIA RAID Introduction
Drawbacks
# Hard Disks
No fault tolerance.
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.
Decreases perfor-
mance because of the
d i f f i c u l t y i n u s i n g d r i v e s
concurrently or to op-
timize drives for differ-
ent uses.
50
Fault Tolerance
m u l t i p l e
None
2
Yes
4+
Yes
m u l t i p l e
No
2005-3-16, 17:33
Hide quick links:
Advertisement
Table of Contents
