HightPoint Technologies RocketStor 6314A, User Manual

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Table 3. RAID Level Reference Table
Type Descriptio
n 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