Which drives to choose for NAS?

Question

Iron

There is a NAS Synology DS212j with two slots for 2-inch and 3-inch drives. It is planned to install two disks in RAID 1, each disk is in the region of 2-3 GB.
Which disk is better to take (meaning a pair)?
specific model?
Manufacturer?
Series?
Rotational speed?
Buffer?
What other features to consider?
For each answer, I would like to know - why?
I would be grateful for answers to one or more questions.
Thank you.

Answer 1

Do not take discs from the same batch to reduce the likelihood of simultaneous failure

Answer 2

It is best to install discs from the compatibility table.
www.synology.com/support/hd.php?lang=rus&bays_id=2&product_id=89#3.5%20SATA%20Hard%20Drives
I've been running a 411j with four Samsung HD204UIs for over a year now.
In general, the choice depends on what you want to get at the output. Low consumption, high speed, reliable.

Answer 3

3 inches, 5200 rpm (they heat up and eat less, the speed is still limited by the network), I have a 2 TB Hitachi DeskStar in DS111j that has been working for the last year.
And yes, UPS is highly desirable.

Answer 4

For your home? Yes, in principle, any will do :) I took a terabyte WD Green (7200, 8Mb), usually 3-4 clients at the same time (the main scenario is to write a torrent, and the rest read heavy media files). Completely satisfied with the speed.