I am streaming , how can I play music when provider goes down.

What is the 1T server - is it a NAS drive?

1T = one terabyte.

2T = two terabytes.

Tidal allows downloads. Once you download and have Tidal software installed, you'll be able to play downloaded songs/tunes. It's all tied up to the license terms of the installed software and must be current.

Enjoy listening and start downloading what you might want to listen again.

I must assume you are storing your files on a providers server. 
 

Then use a streamer with storage. Most quality streamers have options for internal storage… and sound better than other options.

I stream Amazon Ultra HD. Music I like I download to my LG V40 phone that's used strictly as a player. I use it I walk or can stream to my system through BT AptX or wired. No internet required. This is a great way to explore music because you can download without having to buy and it stays there while you keep the streaming service. I do also have a Bluesound node for system streaming with gigabit fiber internet. 

And people wonder why I have 500 CDs on a SSD.  :)

Hello To all ,I just have a fanless computer  running Roon,qobuz and separate dac 

i will purchase whatever is needed , I am just building a reference digital system

it bugs me to be crippled ,every time spectrum goes out 

when I have 1Terabytes of Flac files on a Solid state drive ,

much appreciated with any all help !!