Having extra physical storage on hand is always ideal, allowing you to rely less on cloud options and also quickly transfer files between devices. But when it comes to archiving lots of files, bigger is better. And right now, one of our favorite large-capacity portable SSDs is on sale: the 2TB Samsung T9 is down to just $200 on Amazon, which is a hefty 33 percent discount off its original $300 price. Our review of the Samsung T9 SSD gave it an almost-perfect 4.5 score and our Editors’ Choice award, as our expert reviewer praised the drive’s performance, ruggedness, and the fact that you can ac…