Owner's manual

HighPoint Technologies Inc. 40
rebuilding process complete. The status is in “Disabled”.
Array disk member diagram is like this:
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