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Depends on what you plan to do. What is the benefit to uploading your blurays to a server / NAS? Plex has gotten not so great overall, a lot of home labbers will tell you the same Plex has gone down hill a lot. Plex over the years has become generally unreliable.
If you build a NAS you'll be going with FreeNAS / TrueNAS you will also have to learn Docker, drive configurations and other tasks.
Each bluray movie will occupy roughly
That can also vary depending on additional audio-channels encoded.
So for a worst case guess for 100 movies you'd need 50GB * 1000 = 50TB to accommodate 100 movies on the NAS.
You've also have to take into consideration overall bandwidth between network switches as well. And overall network effectiveness you'll need faster than 802.3 1000Base-T because 1GbE will get you a single 4K stream over your network if you have 4K capable hardware. So 125MB/s theoretical bandwidth in a 1000Base-T connection. So you'd need to look at faster than that if you want to run multiple concurrent 4K streams over the network.
Then after ingesting the content of your movie library you'll have to run them through tans-coding.
To cost that out you'd be either looking at WD Red or IronWolfs this will cost
6TB * $94 USD = $564 (48TB) 1TB less than what you would need for 100 Movies.
Builiding your own NAS with an appropriate case is also difficult you will also need a SAS Controller board. With a SFF-8648 and the branch cables with it to build a NAS. The SAS Controller can usually be gotten cheap on ebay. You'll need at minimum 2 SF-8648 cables, you'll also have to find the appropriate micro-ATX motherboard and case to accommodate all this, usually you'd be looking for a micro-ATX formfactor case and also looking for a case that can accommodate 8 drives.
Lost you so far? So unless you have at least $1000 - $1500 to sink into a prebuilt or a build it yourself forget about trying to run a NAS.
Oh and you'll need the knowledge on how to manage windows server if you pay for it, or more likely open source Ubuntu.
Exactly what you'll be using the server for, how many devices at a time, if any transcoding, HD or 4k, and stuff is required will affect the hardware you require.
EDIT: Adding to what Product says above. If using the x265 codec files will take longer to rip but they will be smaller. Depending on the devices being streamed to your server maybe required to transcode a file for the device to view it thus you'd need more powerful hardware.
I started with 2x10TB Ironwolf Pros just over £300 each and a 4 (Diskless) bay Synology DS918+ at around £500. Since then I've added 2 more drive so £1,200+ on drives +£500 for NAS so £1,700- £1,800. My Nas is using Synology raid system with a one drive redundancy. That gives me 30TB of storage and 10TB redundancy. When a drive dies I can remove and add a replacement. Then it's hope the raid can be rebuilt before before another drive dies as if a second dies before it's rebuilt the raid is lost.
2 disc redundancy would be nice but that mean 50% of storage capacity is used for redundancy.
Best option is to actually have a backup of your server. So if/when drives fail or the NAS device fails you still have all the files to transfer to new discs or device. That means you'd need around double the discs to keep data on the NAS and backup.
Thankfully I still have all discs away from kids fingers so I can rebuild it.............it'll just take a longer time to create it all over again.
I went with Synology raid over normal Raid as you can add larger and even smaller drives where as Raid require extra drives be the exact same size.
I just want my media server to be super fast.
Guessing I will need SSDs for that but not sure if it is worth it ?
Errr NO. Not really the drive speed being the issue it's the processing speed when it comes to transcoding and more devices.
You can watch multiple Videos, even 4K video files on a slow 5,400RPM drive play just fine. In a NAS you should be using a NAS rated drive which would be 7,200RPM. Unless you plan on no redundancy you'd use Raid. Which can mean the same data is on multiple drives. As it's on multiple drives it can be read twice as fast.
Only NAS that use SSD use them for cache data and it really doesn't mean anything if you not repeating the same thing. Are you going to watch Film A and then Film A followed by Film A? No so it doesn't need to be cached. Not to mention the fact there would be 0 benefit in SSD speeds. Plus think costs. A 4TB 2.5" SSD is similar price to a 10TB HDD. Now thing adding data redundancy or equal size. You'd get less than half the capacity for similar price and you'd be getting 0 benefit.
EDIT: Just ran a check for you using a 4k HDR x265 7.1 surround sound file on a 5,400RPM HDD in my PC. Usage spiked to 3MB/s. Considering Even the poorest perform HDD is capable of 100+MB/s that means a HDD can supply over 30 4k video streams. Reading/writing on my NAS can see speeds exceeding 300MB/s. I'm Raiding mine so data is mirrored on more than 1 HDD and doubling the speeds as data is pulled from more than 1 drive. Even if it was capped at 300 MB/s for combined that's be 150MB/s per drive. That's means drive could read enough data to supply 50+ 4k HDR streams.
Lower if Transcoding was needed but not exactly an issue with soooo much excess available.
If you want to run a Plex server (or anything similar) all you need is a computer to do it. You can use your regular use PC, in which case the server will only be "up" when the PC is on and you have the server app running. Alternatively you can use just about *any* older PC as well.
With that said there are a few things to think about:
If you plan to stream high rez content to lower rez devices (or over limited bandwidth connections) you will want to stick to a minimum of an FX8350/i7 (first gen) or better. Anything less will start to choke hard on 4k>Lesser transcodes. If you stick to 1080p content or lower you can drop the CPU down to an i5, or even something as old as an Athlon x4, provided that you are keeping to a single "on-the-fly" transcode.
Which brings us to the next part. Rez vs Bitrate. Its *way* easier to transcode same rez to lower bitrate than it is to transcode high rez to lower rez. IE, its much easier to take a 4.5mbps 480p file and transcode that to a 1.5mbps 480p file, than it would be to take a 4.5mbps 1080p and convert it to a 1.5/480 file. Likewise, quality is two parts, rez and bitrate, and you might find that in side by sides a good quality 3-4mbps 480p rip acutally looks *better* than a 1-1.5mbps 1080p rip. There is a ballance game between rez and bitrate, too low a rez and no matter the bitrate it will look crap, but conversely too high a rez with too low a bitrate and it will look even worse...
On a final note, when choosing format for your video rips, though the size will be a bit larger I highly suggest sticking to x264 mp4/m4v with web-optimisation. If you stick to that then for 90% or greater of the streams over plex you will be able to run Direct Stream, and you will only have to transcode on rare instances. If you run a more modern codec/container such as h265 or .mkv you will run into more on the fly transcoding and thus will need a more powerfull base build.
I personally run two plex servers, a public one, and a private "backup" plex server. The one I share out to friends and fam is on an FX8350 w/32GB RAM and PrimoCache backed HDD's (highly recomended for multi-user plex if single disk non-SSD). The secondary rig is an old Athlon II x4 w/6GB RAM. Even that one can handle a single on the fly 1080p transcode without issue, while also streaming direct stream local at the same time.
In terms of network, I have sucessfully pushed 1080p streaming from a server whos only link was a Wireless G 2.4Ghz 54mbps link (pushed a 10.5mbps BR Rip, the connection does ~20-25mbps sustained so no issue)... So no, you dont *need* gigabit. Though for internal high bit rate streaming haveing gigabit and wireless AC is a nice boost. For outside streaming (WAN) you will want as much upload as you can, but you can easily get by with what you have (so long as its at least a few MBPS)
as far as your storage, forget h.264 - h.265 is the way to go, I convert all my BRs to 1080p H.265 and the storage drops to under 5Gb per movie, more details:
Guide to HEVC/H.265 Encoding and Playback[www.techspot.com]
HandBrake – H.265 NVEnc 1080p Ripping Chart and Guidelines[www.ryananddebi.com]
Says the guy going into details off bitrate, format, res and stuff.
Plus what's the point of being quite vague and lacking details in a informative post? OP asked a question/. And then asks more after providing some info. Instead of keeping post brief and waiting to see if OP asks follow up questions it's useful to provide extra information upfront. You just did exactly the same.