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EVGA Z390 FTW (123-CS-E397)
The RAID5 diagram below is a bit more complicated than the others, due to the nature
of how data is distributed. In the diagram you will see that there is one more Physical
drive than there is data set. This method of data distribution shows that as long as you
have three (3) copies of each data set (Data-A, Data-B, and DATA-C), the array will be
functional and capable of rebuilding when you add in replacement drive in. And while
this is not mathematically correct for HOW the data distribution works, it is a good
visualization to understand the basics of how it works.
RAID 5 (4 Drive)
P-DRIVE1
P-DRIVE2
P-DRIVE3
P-DRIVE4
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
L-Drive = DATA-ABC
P-DRIVE1
P-DRIVE2
P-DRIVE3
P-DRIVE4
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
L-Drive = DATA-ABC
RAID10
: RAID10 is the only level of nested RAID currently supported by the
integrated PCH controller. Nested RAID is the process where a controller makes
multiple RAID arrays, treating each of them as their own device and applies them to
ANOTHER RAID level. This type of virtualization allows you to have an array where
each node has its own level of redundancy.
In the instance of RAID10, it is two (2) or more Mirrored arrays (RAID1s) that are
striped together (RAID0). In effect, this is RAID0 where every physical drive (now
logical drive due to nested RAID functions) in the array is internally redundant via a
mirror. This means you can lose a drive and the data set is still present; when the drive
is replaced, it is replicated by the data internal to that node.
RAID10 is highly scalable. RAID10 always scales in two (2) drive increments, starting
with a minimum of four (4) drives. This motherboard series supports a four (4) drive or
a six (6) drive RAID10 array. Lastly, RAID10 is a mirrored array, which means it shares
the same 50% drive capacity, as all data has a 1:1 copy.
P-DRIVE1
P-DRIVE2
P-DRIVE3
P-DRIVE4
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
L-Drive = DATA-ABC
P-DRIVE1
P-DRIVE2
P-DRIVE3
P-DRIVE4
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
DATA-ABC
L-DRIVE = ≃ 3TB
P-DRIVE1
P-DRIVE2
P-DRIVE3
P-DRIVE4
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
L-Drive = DATA-ABC
P-DRIVE1
P-DRIVE2
P-DRIVE3
P-DRIVE4
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
DATA-A
DATA-B
DATA-C
L-Drive = DATA-ABC
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