HighPoint RocketStor 6328 - Manual (Page 39)

HighPoint Technologies Inc.
39
APPENDIX C - RAID Technology Explanation
Type Description Mini.
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 1 Disk
Mirroring
2 50% It provides convenient
low-cost data
redundancy for
smaller systems and
servers Useable storage
space is 50% of total
available capacity Operating system,
backup, and
transaction database.
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 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. Data archives, and
ideal for application
that require data
protection
RAID 50 RAID5 set
followed by
stripe 6 67-94% High read
performance, and
medium write
performance with
data protection with a
single drive failure Cost is high because
minimum disks
requirement is 6 Large database, file
server, application
servers
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