16-06-2012, 11:08 AM
RAID TECHNOLOGY
RAID TECHNOLOGY.ppt (Size: 830 KB / Downloads: 45)
INTRODUCTION:
It is REDUNDANT ARRAYS OF
INEXPENSIVE DISKS.Here the multiple
small,inexpensive physical disks are
combined in to an array thad would
function as a single logical drive,but
provide better performance and higher
data availability than single large
expensive disk drive.
RAID 1
Uses mirroring
Also known as duplexing
Fault tolerant
High Disk overhead
Mirroring typically handled system software
Simplest RAID design
RAID 2
Error Detection and Correction
Parity and Hamming Code
Used to identify and correct errors
Hamming Code
Uses parity bits to verify data integrity
Parity bits signify oddness of data bits
ECC (Error Correction Code)
Conclusion
So what have we learned here?
Well we have learned that RAID is not
just a bug spray.RAID is a good solution
for companies or individuals carving
more transfer performance,redundancy
and storage capacity in their data
storage systems.
RAID TECHNOLOGY.ppt (Size: 830 KB / Downloads: 45)
INTRODUCTION:
It is REDUNDANT ARRAYS OF
INEXPENSIVE DISKS.Here the multiple
small,inexpensive physical disks are
combined in to an array thad would
function as a single logical drive,but
provide better performance and higher
data availability than single large
expensive disk drive.
RAID 1
Uses mirroring
Also known as duplexing
Fault tolerant
High Disk overhead
Mirroring typically handled system software
Simplest RAID design
RAID 2
Error Detection and Correction
Parity and Hamming Code
Used to identify and correct errors
Hamming Code
Uses parity bits to verify data integrity
Parity bits signify oddness of data bits
ECC (Error Correction Code)
Conclusion
So what have we learned here?
Well we have learned that RAID is not
just a bug spray.RAID is a good solution
for companies or individuals carving
more transfer performance,redundancy
and storage capacity in their data
storage systems.