Dell OptiPlex Tower Plus 7020 - Storage matrix; Redundant Array of Independent Disks (RAID)

Storage matrix
The following table lists the storage configurations supported on your OptiPlex Tower Plus 7020.
Table 13. Storage matrix
Storage Slot
SSD0
(Primary
M.2 PCIe
for boot
function)
SSD1 SSD2 SATA0 SATA1
One M.2 2230/2280 solid-state drive Yes
Two M.2 2230/2280 solid-state drives Yes Yes
Three M.2 2230/2280 solid-state drives Yes Yes Yes
One M.2 2230/2280 solid-state drive
+
One 3.5-inch hard-disk drive
Yes Yes
One M.2 2230/2280 solid-state drive
+
Two 3.5-inch hard-disk drives
Yes Yes Yes
Two M.2 2230/2280 solid-state drives
+
One 3.5-inch hard-disk drive
Yes Yes Yes
Two M.2 2230/2280 solid-state drives
+
Two 3.5-inch hard-disk drives
Yes Yes Yes Yes
Two M.2 2230/2280 solid-state drives
+
One 3.5-inch hard-disk drive
Yes Yes Yes
Three M.2 2230/2280 solid-state drives
+
Two 3.5-inch hard-disk drives
Yes Yes Yes Yes Yes
Redundant Array of Independent Disks (RAID)
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, determines 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 very small block sizes.
Specifications of OptiPlex Tower Plus 7020
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