HighPoint RocketStor 6414TS, Руководство пользователя

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Appendix C: RAID Level Quick Reference
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