Naim Audio HDX - Manual (Page 5)

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2.1 Selecting Options
The Select Options menu enables adjustment of the test parameters. Each parameter is
explained in the following paragraphs. The NAS Simulation application simulates a hard
disk player or music server accessing audio files from a NAS drive and generally higher
parameter settings are indicative of larger systems. Higher settings also generate more
data overhead on the network and potentially cause the test to fail. The default parameter
settings are appropriate for most tests, however extending the “Read Analysis Period” will
produce a more realistic set of results.
Simulate Random Playback:
Simulates a random read process, more indicative of playing a random playlist, quick-play
or a user-generated playlist.
Simulate Background Music Rescan:
A hard disk player or music server will scan for changes to the music stores/shares
periodically. This setting simulates the player scanning the NAS drive whilst playing back
audio streams, thus increasing the network overhead.
Total Rooms Playing At Once:
Enables adjustment of the number of simulated streams (i.e. rooms) being read from the
NAS. Specifying more rooms makes the test more realistic for larger setups.
Rescan Throttle in ms:
This setting changes the time (in milliseconds) for the application to access the NAS drive. A
higher setting allows more time for re-scanning so giving the NAS more breathing room.
Total Artists:
Enables adjustment of the number of “artists” available during the test.
Total Albums Per Artist:
Enables adjustment of the number of “albums” per “artist” to be read from during the test.
Select Audio Quality:
Allows specification of the quality level of the music files during the test. Higher quality will
increase network overhead. The options are CD Quality (i.e. 16bit/44kHz) and High Definition
(i.e. 96kHz/24bit).
Select Reading Analysis Period:
The Read Analysis Period sets the time allowed for the application to read files back from
the NAS. Setting the read period to a higher value gives a more accurate result at the
expense of the time taken for the test to complete. The default setting is 24 hours. Do not
adjust this seting unless instructed to by Naim technical support.
Reset to Default:
Sets the parameters back to their defaults.
With the options set as required click Next to begin the test.
NAS Simulation Tool Supplement
Note: The write portion of
this test copies “music” files
to the NAS device, prior
to the read test. This on
average will take around
two hours on most NAS
devices. This has to be
taken into account in the
overall test time of the
storage device.