Storage Questions

Nope. You should've researched this prior to buying methinks.

As to which hard drive I'd recommend? The one that fits your needs and budget and has a good warranty. A hard drive's a hard drive.

 

It is replaceable, but there aren't 3rd party replacement parts available. It's basically not upgradeable because of this.

I've had good luck with WD external drives.

 

Western Digital offers an external thunderbolt hd. Its kinda pricy starting at 299 for 2TB, but its super quick at 233MB/s. This is the best portable one you will get unless you go external SSD, then the price triples and less storage.

http://www.wdc.com/en/products/products.aspx?id=1240

 

I bought a Samsung Evo 850 250gb SSD for $100 & a $20 USB 3.0 UASP off Amazon and get pretty good read/write speeds. For less than $150 delivered. Definitely what I recommend for FAST external storage.

[Optimized For SSD, Support UASP SATA III] Inateck 2.5 Inch USB 3.0 Hard Drive Disk HDD External Enclosure Case with usb 3.0 Cable for 9.5mm 7mm 2.5" SATA HDD and SSD, Tool-free (FE2002) https://www.amazon.com/dp/B00FCLG65U/ref=cm_sw_r_awd_u5Lyvb1PAZAYK

Samsung 850 EVO 250GB 2.5-Inch SATA III Internal SSD (MZ-75E250B/AM) https://www.amazon.com/dp/B00OAJ412U/ref=cm_sw_r_awd_U5Lyvb0V3B79K