Dell W26C Setup And Specifications - Page 25

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Table 11. Audio specifications (continued)

Description

External volume controls

Speaker output:

Average speaker output

Peak speaker output

Subwoofer output

Microphone

Storage

This section lists the storage options on your OptiPlex 7400 All-in-One.

Table 12. Storage matrix

Storage

M.2 SSD Boot

Table 13. Storage specifications

Storage type

M.2 2230, Class 35 SSD

M.2 2230, Class 35 SSD, self-encrypting

drive

M.2 2280, Class 40 SSD

M.2 2280, Class 40 SSD, self-encrypting

drive

RAID (Redundant Array of Independent Disks)

For optimal performance when configuring drives as a RAID volume, it requires identical drive models.

RAID 0 (Striped, Performance) volumes benefit from higher performance when drives are matched because the data is split

across multiple drives: any IO operations with block sizes larger than the stripe size will split the IO and become constrained by

the slowest of the drives. For RAID 0 IO operations where block sizes are smaller than the stripe size, whichever drive the IO

operation targets will 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 very small block sizes.

RAID 1 (Mirrored, Data Protection) volumes benefit from higher performance when drives are matched because the data

is mirrored across multiple drives: all IO operations must be performed identically to both drives, thus variations in drive

performance when the models are different, results in the IO operations completing only as fast as the slowest drive. While

this does not suffer the variable latency issue in small random IO operations as with RAID 0 across heterogeneous drives, the

impact is nonetheless large because the higher performing drive becomes limited in all IO types. One of the worst examples of

constrained performance here is when using unbuffered IO. To ensure writes are fully committed to non-volatile regions of the

RAID volume, unbuffered IO bypasses cache (for example by using the Force Unit Access bit in the NVMe protocol) and the IO

Values

No hardware volume buttons

5 W

6 W

Not applicable

Two—MEMS microphones

SSD

Interface type

PCIe NVMe Gen3 x4

PCIe NVMe Gen4 x4

PCIe NVMe Gen3 x4

Single M.2 socket

Yes

RAID0 or RAID1

Capacity

Up to 1 TB

256 GB

Up to 2 TB

Up to 1 TB

Specifications of OptiPlex 7400 All-in-One

M.2 socket

Yes

RAID0 or RAID1