HighPoint RocketStor 6414S, User Manual

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Appendix C: RAID Level Reference Guide
1
Type Description Min.
disks
Usable
space
Advantage Disadvantage Application
JBOD
Just a bunch of
disk
1 100%
Each drive can be
accessed as a single
volume No fault tolerance - failure
of one drive results in
complete data loss Backup
RAID
0
Disk Striping
2 100%
Offers the highest
performance No fault tolerance – failure
of one drive in the array
results in complete data
lose Temporary file,
performance driven
application.
RAID
1 Disk Mirroring
2 50%
Provides convenient low-
cost data redundancy for
smaller systems and
servers Useable storage space is
50% of total available
capacity. Can handle 1 disk
failure. Operating system,
backup, and
transaction database.
RAID
10
Disk Mirroring
followed by
stripe
4 50%
High read performance
and medium write
performance with data
protection for up to 2-
drive failures Useable storage capacity
equals total capacity of all
drives in the array minus
two Fast database and
application servers
which need
performance and
data protection
RAID
5
Disk Striping
with Rotating
parity
3 67-94%
High read performance,
and medium write
performance with data
protection with a single
drive failure Not recommended for
database applications that
require frequent/heavy
write sessions. Can handle
1 disk failure. Data archives, and
ideal for application
that require data
protection
RAID
6
Disk Striping
with dual
rotating parity
4 50-88%
High read performance,
and medium write
performance with data
protection in case of up
to two drives failure Not recommended for
applications that require
frequent/heavy write
sessions. Data archives and
ideal for application
that requires data
protection
1
Refer to the RAID controller product specifications for supported RAID levels.