SSD Drive - At what percentage of capacity do you think you should get a larger SSD Drive.

[mwheelerk]

Here are the current SSD drives I use in my system.  One is used to house my Music Library.  The others are a Time Machine backup on my MacBook and Music Library and three SSD drives used with Carbon Copy Cloner, two for Music Library backups and one for my MacBook backup.  Below are the capacities of each drive, how much is currently used and how much capacity is left along with a percentage of capacity left.

 

 

SSD CAPACITIES

 

 

Size - Used - Available - Percentage Remaining

 

 

MASTER MUSIC LIBRARY 2TB -  1.45TB - 547.2GB - 27.36%

 

 

TIME MACHINE 2TB - 1.9TB -  73.11GB - 3.66%

 

 

CCC MB PRO 1TB - 804.54GB - 191.03GB - 19.10%

 

 

CCC MUSIC MASTER 2TB -  1.31TB -  681.97GB - 34.10% 

 

 

CCC MUSIC SECONDARY 2TB - 1.46TB -  537.07GB - 26.85%

 

Is there any rule or rule of thumb for upgrading to a larger SSD when a certain capacity is met or exceeded?