HDcctv
DVR
97
6.7.3
RAID
The
RAID
function
(Redundant
Arrays
of
Independent
Disks)
can
enable
two
hard
disks
to
act
as
one,
allowing
users
to
achieve
data
redundancy
(RAID
1)
or
greater
effective
disk
speed
(RAID
0).
Note:
It
is
recommended
to
use
two
HDDs
with
the
same
capacity.
Otherwise,
the
smaller
size
will
be
the
amount
of
disk
space
used
on
both
drives.
For
example,
if
HDD1
is
200
GB
and
HDD2
is
500
GB,
and
RAID
0
is
selected,
the
total
amount
of
disk
space
recognized
by
the
DVR
will
be
400
GB
(200
GB
+
200
GB).
Figure
6
‐
32
Local
Drive
Configuration
RAID
0:
RAID
0
is
designed
to
improve
disk
speed.
Data
is
written
to
two
disks
alternatively,
instead
of
just
one,
which
improves
the
overall
system
speed.
Note
that
if
the
two
HDDs
are
with
different
capacity,
the
smaller
size
will
be
the
amount
of
disk
space
used
on
both
drives.
RAID
1:
RAID
1
is
designed
for
disk
redundancy.
The
same
data
is
written
to
two
disks.
When
one
hard
disk
fails,
the
other
hard
disk
contains
all
the
data.
Note
that
if
the
two
HDDs
are
with
different
capacity,
the
smaller
size
will
be
the
amount
of
disk
space
used
on
both
drives.
Local
Drive
Information:
Display
the
status
of
the
local
drive.
