<s>
RecoverPoint	B-General_Concept
is	O
a	O
continuous	B-General_Concept
data	I-General_Concept
protection	I-General_Concept
product	O
offered	O
by	O
Dell	O
EMC	O
which	O
supports	O
asynchronous	O
and	O
synchronous	O
data	B-Architecture
replication	I-Architecture
of	O
block-based	O
storage	O
.	O
</s>
<s>
RecoverPoint	B-General_Concept
was	O
originally	O
created	O
by	O
a	O
company	O
called	O
Kashya	O
,	O
which	O
was	O
bought	O
by	O
EMC	O
in	O
2006	O
.	O
</s>
<s>
EMC	O
had	O
already	O
announced	O
a	O
product	O
named	O
RecoverPoint	B-General_Concept
in	O
October	O
2005	O
,	O
adapted	O
from	O
a	O
product	O
called	O
Recovery	O
One	O
from	O
Mendocino	O
Software	O
.	O
</s>
<s>
The	O
EMC	O
RecoverPoint	B-General_Concept
product	O
based	O
on	O
Kashya	O
technology	O
was	O
released	O
in	O
2007	O
,	O
and	O
version	O
3.0	O
released	O
in	O
2008	O
.	O
</s>
<s>
RecoverPoint	B-General_Concept
continuous	B-General_Concept
data	I-General_Concept
protection	I-General_Concept
(	O
CDP	O
)	O
tracks	O
changes	O
to	O
data	O
at	O
a	O
block	O
level	O
and	O
journals	O
these	O
changes	O
.	O
</s>
<s>
Every	O
write	B-General_Concept
is	O
tracked	O
and	O
stored	O
as	O
a	O
different	O
snapshot	B-Application
.	O
</s>
<s>
CDP	O
can	O
journal	O
each	O
write	B-General_Concept
individually	O
,	O
hence	O
enabling	O
any-point-in-time	O
snapshots	B-Application
,	O
or	O
it	O
can	O
be	O
configured	O
to	O
combine	O
consecutive	O
writes	O
in	O
order	O
to	O
reduce	O
journal	O
space	O
and	O
improve	O
bandwidth	O
.	O
</s>
<s>
CDP	O
works	O
only	O
over	O
a	O
storage	O
area	O
network	O
-	O
the	O
RecoverPoint	B-General_Concept
appliances	B-Architecture
need	O
to	O
be	O
configured	O
for	O
the	O
replica	B-General_Concept
and	O
the	O
journal	O
Logical	O
Unit	O
Numbers	O
(	O
LUNs	O
)	O
.	O
</s>
<s>
RecoverPoint	B-General_Concept
continuous	O
remote	O
replication	B-Architecture
(	O
CRR	O
)	O
enables	O
a	O
replica	B-General_Concept
in	O
a	O
remote	O
site	O
.	O
</s>
<s>
For	O
such	O
a	O
setup	O
,	O
RecoverPoint	B-General_Concept
appliances	B-Architecture
clusters	O
are	O
required	O
in	O
both	O
the	O
local	O
and	O
remote	O
sites	O
.	O
</s>
<s>
These	O
2	O
clusters	O
communicate	O
over	O
either	O
Fibre	B-Architecture
Channel	I-Architecture
(	O
FC	O
)	O
or	O
Internet	B-Protocol
Protocol	I-Protocol
.	O
</s>
<s>
RecoverPoint	B-General_Concept
applies	O
data	B-General_Concept
compression	I-General_Concept
and	O
data	B-General_Concept
de-duplication	I-General_Concept
in	O
order	O
to	O
reduce	O
wide	O
area	O
network	O
traffic	O
.	O
</s>
<s>
As	O
of	O
RecoverPoint	B-General_Concept
3.4	O
,	O
only	O
one	O
remote	O
site	O
.	O
</s>
<s>
CRR	O
can	O
be	O
combined	O
with	O
CDP	O
in	O
order	O
to	O
provide	O
concurrent	O
local	O
and	O
remote	O
(	O
CLR	O
)	O
replication	B-Architecture
.	O
</s>
<s>
The	O
consistency	O
group	O
(	O
CG	O
)	O
term	O
is	O
used	O
for	O
grouping	O
several	O
LUNs	O
together	O
in	O
order	O
to	O
ensure	O
write-order	B-General_Concept
consistency	I-General_Concept
over	O
several	O
volumes	O
.	O
</s>
<s>
These	O
logical	O
drives	O
must	O
be	O
kept	O
in-sync	O
on	O
the	O
replica	B-General_Concept
if	O
data-consistency	B-General_Concept
needs	O
to	O
be	O
preserved	O
.	O
</s>
<s>
Other	O
examples	O
are	O
multi-volume	O
file	O
systems	O
such	O
as	O
ZFS	B-Application
or	O
Windows	O
 '	O
Dynamic	O
Disks	O
.	O
</s>
<s>
Similar	O
to	O
other	O
continuous	B-General_Concept
data	I-General_Concept
protection	I-General_Concept
products	O
,	O
and	O
unlike	O
backup	B-Protocol
products	O
,	O
RecoverPoint	B-General_Concept
needs	O
to	O
obtain	O
a	O
copy	O
of	O
every	O
write	B-General_Concept
in	O
order	O
to	O
track	O
data	O
changes	O
.	O
</s>
<s>
EMC	O
advertises	O
RecoverPoint	B-General_Concept
as	O
heterogenous	O
due	O
to	O
its	O
support	O
of	O
multi-vendor	O
server	O
,	O
network	O
and	O
storage	B-General_Concept
arrays	I-General_Concept
.	O
</s>
<s>
Host-based	O
write	B-General_Concept
splitting	O
is	O
done	O
using	O
a	O
device	B-Application
driver	I-Application
that	O
is	O
installed	O
on	O
the	O
server	O
accessing	O
the	O
storage	O
volumes	O
.	O
</s>
<s>
The	O
usage	O
of	O
a	O
host-based	O
splitter	O
allows	O
replication	B-Architecture
of	O
selected	O
non-EMC	O
storage	O
.	O
</s>
<s>
This	O
requires	O
the	O
investment	O
in	O
additional	O
switch	O
blades	B-Architecture
.	O
</s>
<s>
This	O
configuration	O
allows	O
splitting	O
from	O
all	O
operating	O
systems	O
regardless	O
of	O
their	O
version	O
,	O
and	O
is	O
agnostic	O
to	O
the	O
storage	B-General_Concept
array	I-General_Concept
vendor	O
.	O
</s>
<s>
Storage	B-General_Concept
array	I-General_Concept
splitters	O
are	O
only	O
supported	O
on	O
a	O
subset	O
of	O
EMC	O
storage	O
products	O
.	O
</s>
<s>
This	O
method	O
allows	O
write	B-General_Concept
splitting	O
from	O
all	O
operating	O
systems	O
,	O
and	O
does	O
not	O
require	O
special	O
SAN	O
switching	O
hardware	O
.	O
</s>
<s>
The	O
RecoverPoint/SE	O
is	O
a	O
slimmed-down	O
version	O
that	O
only	O
supports	O
this	O
type	O
of	O
splitter	O
.	O
</s>
<s>
Each	O
site	O
requires	O
installation	O
of	O
a	O
cluster	B-Architecture
that	O
is	O
composed	O
of	O
2-8	O
RecoverPoint	B-General_Concept
appliances	B-Architecture
.	O
</s>
<s>
The	O
multiple	O
appliances	B-Architecture
work	O
together	O
as	O
a	O
high	O
availability	O
cluster	B-Architecture
.	O
</s>
<s>
Each	O
appliance	O
is	O
connected	O
via	O
FC	O
to	O
the	O
SAN	O
,	O
and	O
must	O
access	O
both	O
the	O
server	O
(	O
SCSI	B-Architecture
initiator	O
)	O
and	O
the	O
storage	O
(	O
SCSI	B-Architecture
target	O
)	O
.	O
</s>
<s>
Replication	B-Architecture
takes	O
place	O
over	O
either	O
FC	O
or	O
standard	O
Internet	B-Protocol
Protocol	I-Protocol
.	O
</s>
<s>
One	O
or	O
more	O
splitters	O
would	O
split	O
traffic	O
to	O
both	O
the	O
storage	O
and	O
the	O
appliances	B-Architecture
.	O
</s>
<s>
Besides	O
integration	O
with	O
EMC	O
products	O
such	O
as	O
AppSync	O
,	O
ViPR	O
,	O
Replication	B-Architecture
Manager	O
,	O
Control	O
Center	O
and	O
Unisphere	O
,	O
and	O
the	O
Clariion	B-Operating_System
,	O
VNX	O
,	O
Symmetrix	B-Device
and	O
VPLEX	O
storage	B-General_Concept
arrays	I-General_Concept
,	O
RecoverPoint	B-General_Concept
integrates	O
with	O
the	O
following	O
products	O
:	O
</s>
<s>
Integration	O
with	O
VMware	B-Application
vSphere	I-Application
,	O
VMware	O
Site	O
Recovery	O
Manager	O
and	O
Microsoft	O
Hyper-V	O
allows	O
protection	O
to	O
be	O
specified	O
per	O
virtual	B-Architecture
machine	I-Architecture
instead	O
of	O
per	O
volumes	O
that	O
are	O
available	O
to	O
the	O
hypervisor	B-Operating_System
.	O
</s>
<s>
Integration	O
with	O
Microsoft	O
Shadow	O
Copy	O
,	O
Exchange	B-Operating_System
and	O
SQL	B-Application
Server	I-Application
and	O
Oracle	B-General_Concept
Database	I-General_Concept
Server	O
allows	O
RecoverPoint	B-General_Concept
to	O
temporarily	O
stop	O
writes	O
by	O
the	O
host	O
in	O
order	O
to	O
take	O
consistent	O
application-specific	O
snapshots	B-Application
.	O
</s>
<s>
Application	B-Application
programming	I-Application
interfaces	I-Application
and	O
command-line	B-Application
interfaces	I-Application
allow	O
customers	O
to	O
integrate	O
with	O
custom	O
internal	O
software	O
.	O
</s>
