Can I connect or disconnect power to a SATA disk when the PC is running?
Posted on 2010-11-20
I have a standard PC with several harddisks. I would like to use one of them for backing up important data. Just copy the data to the disk is easy.
However, I want to be able to physically disconnect the drive from the rest of the system to get better data protectin. No matter what happens to the main system there should not even be a theoretical chance that the backup disk is altered or deleted.
My thinking is that I install an physical switch that connect/disconnects the backup disk from power. When I want to back up data I apply power - and when I'm done I switch power off.
I have two questions:
1. Can I have a SATA disk connected with the data cable but with power not connected?
2. If I only connect/disconnect the backup disk to power while the PC is turned off then I should be safe (if question 1 is OK). But how about connect or disconnet while power is on? That is, a kind of "hot-swap". Is that OK, or do I risk damage to the disk or the mother board?
An alternative solution is, of course, to use an USB disk as backup. But right now I would like to explore the SATA disk idea.