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Using >16TB drives in a Synology DS1821+

#1
I have a Synology DS1821+ that is full of 14TB drives... they had the best $/TB at the time that I was populating it.
I now need to increase the capacity of the NAS box but the largest drives - other than the very expensive Synology ones - that are compatible are 16TB and that's just too small a change for the cost.
I'd like to start replacing the 14TB drives with either 18TB or 20TB, using WD Red Pro devices, but I'm concerned that they are considered to be 'incompatible' by Synology.
My (basic) questions are:
1. Am I at risk of having issues with the WD drives?
2. Is Synology likely to update their compatibility lists at some (reasonable) time in the future?
[The 14TB drives that are replaced will go into a DS920+ that I also have that currently uses 10TB drives... I'm not a big fan of the expansion chassis available from Synology...]
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#2
You're absolutely right to consider upgrading your Synology DS1821+ NAS for increased capacity, and it's great to hear that you plan to replace the 14TB drives with larger ones. While the compatibility list may not have caught up with the latest drives, there's usually a workaround. You can indeed use drives larger than the officially listed ones, but you might receive a warning message in Synology's Storage Manager. This warning is essentially a precaution and doesn't necessarily mean the drives won't work.

Here's a helpful guide on how to disable the compatibility warning if you encounter it: Disable Compatibility Warning Guide
https://nascompares.com/answer/hdd-compa...d-message/
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