<s>
The	O
Oracle	B-Application
Database	I-Application
Appliance	I-Application
(	O
ODA	O
)	O
is	O
a	O
database	B-Application
server	I-Application
appliance	B-Architecture
made	O
by	O
Oracle	B-Application
Corporation	I-Application
.	O
</s>
<s>
It	O
was	O
introduced	O
in	O
September	O
2011	O
as	O
the	O
mid-market	O
offering	O
in	O
Oracle	B-Application
's	O
family	O
of	O
full-stack	B-Application
,	O
integrated	O
systems	O
the	O
company	O
calls	O
engineered	O
systems	O
.	O
</s>
<s>
The	O
ODA	O
is	O
a	O
single	O
rack-mounted	B-Application
device	O
providing	O
a	O
highly-available	O
two-node	O
clustered	B-Architecture
database	B-Application
server	I-Application
.	O
</s>
<s>
Oracle	B-Application
introduced	O
its	O
first	O
engineered	O
database	O
system	O
,	O
Oracle	B-Device
Exadata	I-Device
,	O
in	O
2008	O
.	O
</s>
<s>
In	O
2011	O
,	O
the	O
company	O
announced	O
the	O
Oracle	B-Application
Database	I-Application
Appliance	I-Application
as	O
a	O
smaller	O
,	O
less	O
powerful	O
alternative	O
to	O
Oracle	B-Device
Exadata	I-Device
at	O
a	O
lower	O
price	O
point	O
.	O
</s>
<s>
According	O
to	O
industry	O
analysts	O
,	O
Oracle	B-Application
expected	O
the	O
Oracle	B-Application
Database	I-Application
Appliance	I-Application
to	O
fill	O
the	O
gap	O
in	O
its	O
product	O
line	O
beneath	O
Oracle	B-Device
Exadata	I-Device
,	O
targeting	O
mid-market	O
customers	O
.	O
</s>
<s>
The	O
platform	O
proved	O
very	O
popular	O
with	O
database	B-General_Concept
administrators	I-General_Concept
,	O
with	O
enough	O
support	O
to	O
launch	O
a	O
book	O
about	O
the	O
systems	O
.	O
</s>
<s>
The	O
Oracle	B-Application
Database	I-Application
Appliance	I-Application
supports	O
more	O
than	O
database	O
systems	O
.	O
</s>
<s>
Starting	O
in	O
release	O
2.5	O
(	O
ODA	O
V1	O
)	O
and	O
2.5.5	O
(	O
ODA	O
V2	O
X3-2	O
)	O
,	O
the	O
Oracle	B-Application
Database	I-Application
Appliance	I-Application
can	O
be	O
deployed	O
using	O
Oracle	B-Application
VM	O
,	O
which	O
allows	O
an	O
administrator	O
to	O
install	O
the	O
application	O
tier	O
along	O
with	O
the	O
database	O
.	O
</s>
<s>
The	O
Oracle	B-Application
Database	I-Application
Appliance	I-Application
also	O
offers	O
a	O
pay-as-you-grow	O
model	O
for	O
Oracle	B-Application
licenses	O
.	O
</s>
<s>
This	O
allows	O
a	O
customer	O
to	O
only	O
license	O
the	O
CPU	O
count	O
they	O
need	O
and	O
not	O
the	O
entire	O
capacity	O
of	O
the	O
appliance	B-Architecture
.	O
</s>
<s>
When	O
the	O
Oracle	B-Application
Database	I-Application
Appliance	I-Application
is	O
connected	O
to	O
a	O
ZS3	O
storage	O
array	O
,	O
the	O
DBA	O
can	O
leverage	O
Hybrid	O
Columnar	O
Compression	O
for	O
data	O
stored	O
on	O
the	O
array	O
to	O
enable	O
tiered	O
storage	O
and	O
compression	O
ratios	O
exceeding	O
200%	O
.	O
</s>
<s>
The	O
first	O
generation	O
of	O
the	O
Oracle	B-Application
Database	I-Application
Appliance	I-Application
(	O
ODA	O
V1	O
)	O
is	O
a	O
two-node	O
cluster	O
in	O
a	O
single	O
rack-mounted	B-Application
chassis	O
.	O
</s>
<s>
Each	O
server	O
includes	O
two	O
six-core	O
processors	O
(	O
for	O
a	O
total	O
of	O
12	O
cores	O
per	O
server	O
)	O
,	O
96	O
GB	O
RAM	B-Architecture
,	O
six	O
1	O
Gigabit	O
NICs	B-Protocol
,	O
and	O
two	O
10	O
Gigabit	O
NICs	B-Protocol
.	O
</s>
<s>
The	O
NICs	B-Protocol
are	O
configured	O
in	O
an	O
active/passive	O
HA	O
(	O
bonding	B-Architecture
)	O
configuration	O
.	O
</s>
<s>
Inside	O
,	O
the	O
appliance	B-Architecture
holds	O
four	O
73	O
GB	O
SSDs	B-Device
and	O
twenty	O
600	O
GB	O
hard	B-Device
disks	I-Device
for	O
shared	O
storage	O
.	O
</s>
<s>
Storage	O
is	O
configured	O
during	O
deployment	O
for	O
either	O
double	O
or	O
triple	O
mirroring	B-Architecture
(	O
giving	O
an	O
overall	O
capacity	O
of	O
6	O
TB	O
or	O
4	O
TB	O
,	O
respectively	O
)	O
.	O
</s>
<s>
The	O
appliance	B-Architecture
also	O
contains	O
redundant	O
power	O
supplies	O
and	O
cooling	O
fans	O
.	O
</s>
<s>
Later	O
generations	O
of	O
the	O
appliance	B-Architecture
moved	O
to	O
a	O
more	O
flexible	O
platform	O
,	O
utilizing	O
Oracle	B-Application
X3-2	O
and	O
X4-2	O
x86	O
servers	O
and	O
one	O
or	O
two	O
SAS	O
storage	O
trays	O
.	O
</s>
<s>
Each	O
compute	O
node	O
of	O
the	O
latest	O
X4-based	O
configuration	O
includes	O
four	O
10GBaseT	O
network	O
ports	O
,	O
two	O
12-core	O
Intel	B-Device
Xeon	I-Device
E5-2697	O
v2	O
processors	O
,	O
256	O
GB	O
RAM	B-Architecture
,	O
and	O
optional	O
10	O
Gigabit	O
fiber	B-Application
connectivity	O
.	O
</s>
<s>
The	O
system	O
can	O
also	O
support	O
up	O
to	O
two	O
storage	O
trays	O
,	O
each	O
with	O
twenty	O
900	O
GB	O
hard	B-Device
drives	I-Device
and	O
four	O
200	O
GB	O
SSDs	B-Device
for	O
a	O
maximum	O
capacity	O
of	O
36	O
TB	O
of	O
hard	B-Device
disk	I-Device
space	O
and	O
another	O
1.6	O
TB	O
of	O
SSD	B-Device
space	O
.	O
</s>
<s>
Single	O
-	O
and	O
double-mirroring	O
of	O
disks	O
is	O
supported	O
,	O
for	O
up	O
to	O
18	O
TB	O
of	O
local	O
data	O
storage	O
.	O
</s>
<s>
The	O
Oracle	B-Application
Database	I-Application
Appliance	I-Application
runs	O
Oracle	B-Application
Linux	O
,	O
Oracle	B-Application
Grid	O
Infrastructure	O
for	O
cluster	O
-	O
and	O
storage-management	O
,	O
and	O
a	O
choice	O
of	O
Oracle	B-Application
Enterprise	O
Edition	O
,	O
Oracle	B-Operating_System
Real	I-Operating_System
Application	I-Operating_System
Clusters	I-Operating_System
(	O
RAC	O
)	O
,	O
or	O
Oracle	B-Operating_System
RAC	I-Operating_System
One	O
Node	O
.	O
</s>
<s>
These	O
latter	O
two	O
database	O
products	O
leverage	O
the	O
clustered	B-Architecture
nature	O
of	O
the	O
hardware	O
to	O
provide	O
database-service	O
failover	B-General_Concept
in	O
the	O
event	O
of	O
a	O
failure	O
.	O
</s>
<s>
Oracle	B-Application
also	O
provides	O
Oracle	B-Operating_System
Clusterware	I-Operating_System
for	O
high-availability	O
monitoring	O
and	O
cluster	O
membership	O
,	O
and	O
Oracle	B-Application
Automatic	B-Application
Storage	I-Application
Management	I-Application
(	O
ASM	O
)	O
for	O
storage	O
and	O
disk	O
management	O
.	O
</s>
<s>
Oracle	B-Application
Appliance	B-Architecture
Kit	O
(	O
OAK	O
)	O
software	O
offers	O
a	O
built-in	O
management	O
interface	O
.	O
</s>
<s>
Oracle	B-Application
provides	O
a	O
deployment	O
tool	O
called	O
the	O
appliance	B-Architecture
manager	O
to	O
simplify	O
deployment	O
and	O
make	O
it	O
less	O
time-consuming	O
.	O
</s>
<s>
The	O
vendor	O
also	O
provides	O
special	O
patch	O
bundles	O
for	O
the	O
database	O
appliance	B-Architecture
,	O
consisting	O
of	O
patches	O
for	O
firmware	O
,	O
the	O
Linux	O
OS	O
,	O
clustering	O
,	O
storage	O
management	O
,	O
and	O
database	O
which	O
have	O
been	O
tested	O
for	O
compatibility	O
.	O
</s>
<s>
Customers	O
can	O
choose	O
to	O
license	O
only	O
a	O
subset	O
of	O
the	O
processor	O
cores	O
in	O
the	O
Oracle	B-Application
Database	I-Application
Appliance	I-Application
.	O
</s>
<s>
Cores	O
can	O
be	O
enabled	O
at	O
a	O
later	O
time	O
,	O
allowing	O
customers	O
to	O
increase	O
the	O
capacity	O
of	O
the	O
appliance	B-Architecture
if	O
required	O
.	O
</s>
<s>
The	O
Oracle	B-Application
Database	I-Application
Appliance	I-Application
is	O
only	O
available	O
in	O
fixed	O
configurations	O
.	O
</s>
<s>
Currently	O
,	O
when	O
leveraging	O
an	O
Oracle	B-Application
ZS3	O
array	O
,	O
the	O
storage	O
limit	O
is	O
approximately	O
3.5	O
PB	O
.	O
</s>
