Dell D30M - RAID (Redundant Array of Independent Disks)

Table 13. Storage matrix(continued)
Confi
gurati
on
group
Storage Boota
ble
Devic
e
1st
M.2
PCIe
NVMe
SSD
CPU
lane
2nd
M.2
PCIe
NVMe
SSD
PCH
lane
3rd
M.2
PCIe
NVMe
SSD
PCH
lane
CFI
only
3rd
NVMe
SSD
in
QX118
slim
line
slot
Ultra-
Speed
NVMe
SSD
Zoom
AIC
3.5-
inch
hard
drive
3.5-
inch
hard
drive
3.5-
inch
hard
drive
3.5-
inch
hard
drive
ODD
PCIe lane connection
and SSD location
PCH
Gen3
Slot 3
QX118/ODD Physical
Location
CPU
Gen4
Slot 1
PCH
Gen4
Slot 2
PCH
Gen3
Slot 3
5.25-
inch
front
bay
slimli
ne
PCH
Gen3
Slot 4
C2 Intern
al M.2
SSD
Boot
Option
al
SSDs
3.5-
inch
hard
drives
M.2
SSD
Y
(boot)
RAID
0 or 1
RAID
0 or 1
N/A N/A N/A Y1 Bay
1
Y2
(optio
nal)
Bay 2
N/A N/A Y
(optio
nal)
C2 Intern
al M.2
SSD
Boot
Option
al
SSDs
3.5-
inch
hard
drives
M.2
SSD
Y
(boot)
RAID
0 or 5
RAID
0 or 5
RAID
0 or 5
N/A N/A Y1 Bay
1
Y2
(optio
nal)
Bay 2
N/A N/A Y
(optio
nal)
C2 Intern
al M.2
SSD
Boot
Option
al
SSDs
3.5-
inch
hard
drives
M.2
SSD
Y1
(boot)
Y2
(optio
nal)
N/A Y3
(optio
nal)
Y4
(optio
nal)
Y1 Bay
1
Y2
(optio
nal)
Bay 2
N/A N/A Y
(optio
nal)
C2 Intern
al M.2
SSD
Boot
Option
al
SSDs
3.5-
inch
hard
drives
M.2
SSD
Y1
(boot)
Y2
(optio
nal)
Y3
(optio
nal)
N/A Y4
(optio
nal)
RAID
0 or 1
Bay 1
RAID
0 or 1
Bay 2
N/A N/A Y
(optio
nal)
C3 Intern
al M.2
SSD
Boot
Option
al
SSDs
Front
remov
able
3.5-
inch
hard
drives
M.2
SSD
Y1
(boot)
Y2
(optio
nal)
Y3
(optio
nal)
N/A Y4
(optio
nal)
Y2
(optio
nal)
Bay 1
Y3
(optio
nal)
Bay 2
N/A Y1
Front
Bay 3
Y
(optio
nal)
C4 No storage drive None N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
RAID (Redundant Array of Independent Disks)
For optimal performance when configuring drives as a RAID volume, Dell Technologies recommends drive models that are
identical.
NOTE: RAID is not supported on Intel Optane configurations.
RAID 0 (Striped, Performance) volumes benefit from higher performance when drives are matched because the data is split
across multiple drives: any I/O operations with block sizes larger than the stripe size splits the I/O and become constrained by
the slowest of the drives. For RAID 0 I/O operations where block sizes are smaller than the stripe size, whichever drive the
I/O operation targets determine the performance, which increases variability and results in inconsistent latencies. This variability
is particularly pronounced for write operations, and it can be problematic for applications that are latency sensitive. One such
example of this is any application that performs thousands of random writes per second in small block sizes.
22
Specifications of Precision 3680 Tower