RAID Maintenance Free Backup Basic Functionality (RMFBU)

RAIDMai
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TheRMF
B
package,
pointwit
h
level,and
intheev
e
Theserai
d
canbeus
yielding2
super‐ca
p
fromthe
c
n
tenanceFr
e
RMFBU(A)
B
Usolutioni
n
bothofwhic
h
h
intheserve
r
theTFMinc
l
e
ntofapow
e
d
controllers
edascontrol
GBofNAND
p
acitorpack
u
c
ontrollerD
R
e
eBackupBa
s
Figure
1
andRAIDco
n
n
cludesaTra
n
h
arehoused
r
chassis.Th
e
l
udeson‐boa
e
rlosssituati
o
andmodules
lercache.T
h
flashmemo
r
u
tilizesthree
6
R
AMtothen
o
s
icFunctiona
l

1
‐RMFBUCon
n
n
troller(B)
n
sportableFl
a
inaplasticr
e
e
TFMinclud
e
rdNANDflas
o
n.
Figure2
R
includeupt
o
h
eflashonth
r
ythatcanst
o
6
.8F,13.2Vc
a
o
nvolatilefla
s
l
ity
2
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n
ectiontoaCo
n
R
M
a
shModule(
e
tentionbra
c
e
scircuitryth
a
hmemoryth
R
MFBUCompo
n
o
1GBofDD
R
eTFMconsis
o
rethecach
e
a
pacitorstha
s
hmemoryo
n
trollerorMod
u
M
FBU(A)an
d
(
TFM)conne
c
c
ketthatallo
w
a
tmonitors
c
atactsasar
e
n
ents
R
31333mem
s
tsoffour4G
e
contentsin
tprovideth
e
ntheTFM,if
u
le
d
RAIDModu
c
tedtoasup
e
w
sattachme
n
c
apacitorvolt
e
positoryfor
ory,ofwhic
h
bx8bitwidt
h
eventofap
o
e
powertoof
f
apowerfail
u

le(B)
e
r‐capacitor
n
ttoamoun
t
t
ageandcha
r
controllerc
a
h
alargeport
i
h
NANDflash
o
werloss.T
h
f
loadcached
u
reoroutag
e
t
ing
r
ge
a
che
i
on
parts
h
e
data
e
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