Kontron KISS Stor 0/5 - Manual (Page 16)

Introduction to RAID Levels
KISS-Stor 0/5 – User’s Manual 15
RAID 5: Independent data disks with distributed parity blocks
Characteristics: Recommended use:
q
Each entire data block is written on a data disk.
Parity for blocks in the same rank is generated
on Writes, recorded in a distributed location
and checked on Reads.
q
Highest Read data transaction, medium Write
data transaction rate.
q
Relatively low ratio of ECC (Parity) disks to
data disks means high efficiency (compared to
other RAID levels).
q
Good aggregate transfer rate.
q Storage capacity = (No. of disks – 1) ×
(capacity of smallest disk)
q
File and application
servers
q Database servers
q WWW, E-mail and News
servers
q Intranet servers
q Most versatile RAID level