“required” is a relative term here, I would suggest disabling or lowering the priority of the photo scanning / indexing processed if you have a lot of photos.
This is a goog post on disabling the scanning, see work work arounds section
I have actualy changed mine to run at a lower priotiry and reenabled them, so far it seems good
I strongly suggest a backup of any file before changing it. this requires SSH access and putty or similier. proceed at your on risk. easy change if you ever used Linux / Unix
edit /etc/init.d/wdphotodbmergerd and /etc//init.d/wdmcserverd they had renice 0 -p $$, change it to renice 15 -p $$
if previously disabled do these 4 commands
update-rc.d wdphotodbmergerd enable
update-rc.d wdmcserverd enable
/etc/init.d/wdmcserverd start
/etc/init.d/wdphotodbmergerd start
If not disabled do these 4
/etc/init.d/wdmcserverd stop
/etc/init.d/wdphotodbmergerd stop
/etc/init.d/wdmcserverd start
/etc/init.d/wdphotodbmergerd start