You can but the general consensus is that it is a bad idea for a variety of reasons so I withdraw the idea.can you RAID external drives? I mean single drives, not in an external enclosure like a NAS.
You can push to multiple systems/hard drives with a simple copy/paste through your network.I have cloned external hard drives. One of course is my backup. My question is can I keep adding files and such but to both devices at the same time? I want to keep uploading my DVD and CD collection without having to drag and drop from source to backup.
Sync Toy is a great tool for backing up files. It's not real-time, but it can be scheduled (see Sync Toy Help files) to back up files however often you choose. Only backs up new or changed files, renames files that have been renamed, and deletes (moves to recycle bin) deleted files.You can but the general consensus is that it is a bad idea for a variety of reasons so I withdraw the idea.
I use Microsoft's free SyncToy program for what the OP is doing. It still has to be run manually but it looks for changes so the user doesn't have to remember which files are new or changed. Is offers three different copying modes for uni-directional or bidirectional copying.