Just in case a virus or worm happens - most of the time the second drive shouldn't be in the system. Ideally, you want two swappable drives, for redundancy, one that an be in the system permanently. They are much more reliable than USB drives. I like a tray that takes swappable SATA hard disk drives (some claim to be hot-swappable, though I choose to turn systems off and unplug them before swapping drives, to be safe). I wouldn't be surprised if ext4 is fairly good too - though it has permissions, and is journaled, which might mess you up if a system dies, but at least it isn't NTFS, and with a little effort, I think you can overcome the nasty permissions problem on ext4, unlike modern Windows NTFS. Despite what people say about the advantages of "journaled file systems", exFAT is less likely to have a catastrophic loss, in my experience, though you can still lose small amounts, and sometimes you need to run a disk check after a crash. And sometimes drives crash, when an operating system gets confused, or at end of life, and you lose everything, especially if you use something like NTFS format, which has file permissions. Networks, especially if you use WiFi, like USB, are somewhat unreliable, and sometimes mess up. And I try to take safe, redundant approaches. The Value and J lines are cheaper but don't have all the features of the Plus line. It is in the plus-line, which is higher-end than their value lines, but not quite up to industry use. I am new to NAS too, but I just bought the Synology DS920+. Here is a rundown of all the Synology options:
The DS1520+ is several hundred more, adds a fifth bay, and can be used with two expansion units (for a total of 15 drives). The DS920+ was only around $40 more than the DS420+ which is also four bays but can't be expanded. Two drives didn't seem like enough, but anything bigger than four (at least initially) seemed to me to be overkill. I am starting out with two Toshiba NAS 8TB drives.įor the extra $, I felt the four drive option (with the ability to expand) was best.
It also allows for an upgrade of RAM from 4 to 8 and the addition of two M2 SSD cards for cache purposes. The DS920+ I chose has four HDD slots (3.5" or 2.5") but can be expanded to five more (total of nine) with an extension unit (which costs about the same amount as the original unit).
Click to expand.I am new to NAS too, but I just bought the Synology DS920+.
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