ALSO, can anyone who has knowledge of such things comment on the various HDD configuration/RAID schemes? I'm not very familiar with the best/fastest/etc configurations.
I'm planning the one SSD as my working drive, so I'll have three spare bays/drives to play with. The SSD working drive is the only one who's speed I care about. I also have a 6TB USB3 drive that will be plugged into one of the USB ports on the QNAP.
Some of these TBs may be used for time machine backups, though since i moved to SSD macs, I haven't been as diligent about my backups :-|
I've read in a couple placed that I want to try and configure for iSCSI? (sounds like that's an network protocol and not a drive configuration though)
Sorry for a zillion questions. Some of this may become more clear with a RTFM too...
RAID is generally used for one of three (or all) reasons:
1.
SIZE - Creating a bigger volume than you can fit on a single drive
2.
REDUNDANCY - to protect against downtime due to a failed drive.
3.
SPEED - Faster read/write performance than you can get on a single drive.
Your SSD and fast network should cover #1 and #3. Since you are recording, #2 is not nearly as important on say, a server that can never be down.
I would start with your single SSD and see what you get. If you still have any performance issue, you would want to figure out where the bottleneck is...most likely would network. No need to increase cost and complexity if your simple (single SSD) setup works as intended.
iSCSI is a whole other thing, that can boost performance over network cables by
not using TCP/IP. Turns network cables into direct data cables. Consider that to be a good Plan C if:
• 1 gigabit is too slow
• 2.5 gigabit is too slow
If both are too slow...you could consider iSCSI before spending for 10 gig.
As for any open NAS bays...you could throw spare HDs in there and use them as a second, separate volume to share other files, as a backup destination, or as a destination to backup the SSD. Yes, you could use the 3 spare bays for a single RAID 5 array.