G-Technology G Speed studio, Product Manual

Page: 114 / 119

p. 114
Appendix
RAID Levels Explained
Description
Disk stripping
Mirroring
Stripped Mirror:
A RAID 1E array
can be built from
three or more disk
drives.
Disk stripping
with distributed
parity
Built from two or
more equal-sized
RAID 1 arrays
Just-a-bunch-
of-disks
Advantage
Offers the highest
performance and
a 100% of total
available storage
capacity
Maximum level of data
protection: identical
data is written to
multiple drives
Similar to a RAID 1 array
except that data is both
mirrored
and
striped,
and more disk drives
can be included.
High read performance,
medium write
performance with data
protection in case of a
drive failure
Mirroring provides data
protection, and striping
improves performance
Each drive can be
accessed as an
individual volume.
Usable storage capacity
is 100% of total
available storage
Disadvantage
No fault tolerance –
failure of one drive
in the array results in
complete data loss
Usable storage
space is 50% of total
available capacity
Usable storage
space is 50% of total
available capacity
Usable storage
capacity equals total
capacity of all drives
in the array less the
capacity of one drive
Usable storage
space is 50% of total
available capacity
No fault tolerance
Ideal for
Content creation
applications requiring
highest performance
and storage capacity
Applications in
which data security
is paramount
Applications in
which data security
is paramount and
additional performance
is needed
Content creation
applications requiring
data protection and
performance
Content Backup
and Content creation
applications with
data protection
Audio applications
RAID Level
0
1
1E
5
(Pre-configured)
10
JBOD