<s>
A	O
redundant	B-Error_Name
array	I-Error_Name
of	I-Error_Name
independent	I-Error_Name
memory	I-Error_Name
(	O
RAIM	O
)	O
is	O
a	O
design	O
feature	O
found	O
in	O
certain	O
computers	O
 '	O
main	O
random	B-Architecture
access	I-Architecture
memory	I-Architecture
.	O
</s>
<s>
RAIM	O
utilizes	O
additional	O
memory	O
modules	O
and	O
striping	B-General_Concept
algorithms	O
to	O
protect	O
against	O
the	O
failure	O
of	O
any	O
particular	O
module	O
and	O
keep	O
the	O
memory	O
system	O
operating	O
continuously	O
.	O
</s>
<s>
RAIM	O
is	O
similar	O
in	O
concept	O
to	O
a	O
redundant	B-Architecture
array	I-Architecture
of	I-Architecture
independent	I-Architecture
disks	I-Architecture
(	O
RAID	B-Architecture
)	O
,	O
which	O
protects	O
against	O
the	O
failure	O
of	O
a	O
disk	B-Device
drive	I-Device
,	O
but	O
in	O
the	O
case	O
of	O
memory	O
it	O
supports	O
several	O
DRAM	O
device	O
chipkills	B-Error_Name
and	O
entire	O
memory	O
channel	O
failures	O
.	O
</s>
<s>
RAIM	O
is	O
much	O
more	O
robust	O
than	O
parity	B-Error_Name
checking	I-Error_Name
and	O
ECC	B-General_Concept
memory	I-General_Concept
technologies	O
which	O
cannot	O
protect	O
against	O
many	O
varieties	O
of	O
memory	O
failures	O
.	O
</s>
