topgun80 said:
Thanks for the reply. On the external drive I meant can I turn it off and use the internal drive and turn it back on when I want to record something I want to save.
Yep. The way to swap between internal and external drives is to pull the power plug from the HR, then have the external drive either on or off, depending on what you want to do, then restore power to the HR. If you want it to see the external drive, be sure to let that drive spin up to speed before restoring power to the HR. It's important enough to have the external drive spinning first that I would be sure to have a UPS to prevent issues if the power blinks on and off.
Also, HR21's are especially picky about which external eSATA's they will work with. (HR20's not so much.) There are numerous threads about this, but no brief up-to-date summary. So, if you have an HR21, it's best to spend some time here nosing around and reading stuff before you get an eSATA that won't work. Short answer:
* Antec MX-1 enclosure with WD drives installed seem a safe bet.
* Mixed reviews about using Seagate Barracuda's inside the Antec.
* Seagate FA-Pro's do not work with the HR21.
* Prelim reports seem to indicate that the new Seagate FA-Xtreme's may work with HR21's but evidence is slim.
* There's a Cavalry external eSATA that works too, but I forget which one.
* The list of external drives that don't work is longer than the list of those that do. Nobody knows why.