Shuttle Computer Group KD21 User Manual

Product Specifications

Page 4 | 28 August 2013

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Shuttle OMNINAS KD21 – Special Product Features

LAN/Disk

Performance

up to 100 MB/s

Read

up to 70 MB/s

Write

Superior Performance

The OMNINAS KD21 provides high stability and delivers excellent

performance with top read/write speeds of up to 100 MB/s & 70 MB/s

while it also allows for up to 256 clients to be connected to the device

at the same time. [1]

Two bays provide various expansion modes

The OMNINAS KD21 supports 3.5” or 2.5” hard disks or SSDs with a

maximum capacity of 4 TB (or more) for each drive. The drives are

simple to install and configure. Depending on your specific

requirements you can choose from several RAID modes:



Single disk with expansion capability: install one disk

permanently and you can add a second disk temporarily. You

can always remove or replace the second hard drive, similar

to as how external hard drives are used.



Combine the capacity of two disks with JBOD or RAID 0. If you

are using two identical HDDs, it is recommended to use RAID 0

for optimised performance.



RAID 1 (mirroring): The data is duplicated on two physical

disks. In the event of a single disk failure, the complete data is

still available on the working disk. KD21 supports hot-swapping

and auto-rebuild functionality without having to turn off the

NAS.

2.5mm

Robust aluminium chassis with a clean and modern look

KD21 is built of a 2.5mm thick stylish aluminium housing that not only

blends well with home environments, it moreover is of technical benefit

- it is also increases the thermal performance of the device.

Fan speed

Full

Middle

Off

Shut down

40 50 60

Temperature/°C

Reliable, cool and quiet

With the above in mind, the inside temperature doesn’t increase easily.

The fan will never turn on when the hard disks’ temperature is below the

threshold value of 55°C [2]. Should the uncommon case of higher

temperatures arise, the large 70mm cooling fan starts spinning at a

comfortably low speed to keep the system quiet.