Questions about WD Ultrastar DC HC550

Does the WD Ultrastar DC HC550 (18 TB, 3.5", CMR) also click every 5 seconds when it is booted up? It sounds like a drop of water dripping onto the bottom of an upturned plastic bucket. You can still hear the clacking at a distance of 6 metres. I have tried them in 2 external housings. If you touch the external case, you can even feel the clack. When writing data, the read head noise can also be heard, but it is within the normal range as with other disks and much quieter than the "clack every 5 seconds" that also occurs during data writing in addition to the read head noise. It works, but a mechanical noise whose vibration can still be felt on the external housing sounds like a defect to me. When it is not in use, the clacking stops at some point (presumably hibernation), but as soon as I start reading or writing again and it starts up again (with a very loud rattle of about 3 seconds), the clacking every 5 seconds is also back.

Hello data guru`s Is this WD Ultrastar suitable for a normal Windows 10/11 Pro PC, for data, music or video storage? The PC is not always running, so every now and then. Why so cheap compared to the WD Red CMR HDD? Thank you very much.

Hello HDD Freaks, Data Collectors and Backup Specialists I wanted to ask, if I write data on such an 18 TB, e.g. this DC HC550, once, practically only folders with music files, how does this HDD last if it is not switched on for years? How should I store it? Well, I only know that it has to be stored dry and antistatically. But what else do you have to look out for? Many thanks to the hardware professionals.

Does anyone know if this 18TB Ultrastar DC HC550 will also run in a Synology? The compatibility list unfortunately still only goes up to 16TB (https://www.synology.com/de-de/compatibility?search_by=products&model=&category=hdds_no_ssd_trim&filter_brand=Western%20Digital&p=1). There, the Ultrastar DC HC550 with 16GB is listed as "compatible". Does anyone have any practical experience?

The official WD website states that the warranty is 5 years vs Galaxus 2 years...Which is it? Thanks! https://www.westerndigital.com/products/data-center-drives/ultrastar-dc-hc500-series-hdd

Yesterday it still cost CHF 583.- Is the price drop that rapid?