Thank you all for your answers and valuable tips.
Ok, so I won’t partition. I will keep everything on one drive and get an external for cache.
My question however is this, do I really need an SSD for cache? I know that SSD is much faster but will it make a difference just for the cache? Also what is the optimal size of drive. As it will be used for cache only, I assume I only need a small one. Lastly, I know that Thunderbolt is much faster than USB 3, but will this make a difference for the cache drive.
So my questions are:
1) Do I really need SSD for cache?
2) What size drive should I get for cache?
3) Will Thunderbolt make a big difference from USB3?
Drive options:
SSD:
LaCie Rugged SSD – 120GB – Thunderbolt – $200
LaCie Rugged SSD – 256GB – Thunderbolt – $350
Non SSD:
Seagate Backup Plus – 2 TB – Thunderbolt – $260
Lacie Rugged 5400 rpm – 1TB – Thunderbolt – $220
Seagate Backup Plus – 500 GB (USB 3.0) – $60
Seagate Backup Plus – 2 TB (USB 3.0)- $110