How to twin/synch hard disks in order to avoid crying bad in case of unexpected failure and no fresh backups ready?
December 15, 2008 8:53 AM Subscribe
Does it exist for consumer use? A storage device made by two (or more) twin synched separate hard disks, one for normal use and the other one for backup just in case something goes wrong? Or a software doing the same thing with two (or more) external hard disks?
posted by lion to Computers & Internet (11 answers total) 3 users marked this as a favorite
I would like to know if I can buy a product like the one I'm going to describe.
Premise: I have a laptop, and it uses its internal SATA hard disk.
I have a lot of stuff on it, and I have no time - and never will have - to backup everything, every day, on DVDs, external USB hdd, etc.
I would like to be very unlikely to lose some data (or everything).
I know some day the internal HDD, or the laptop, will fail. It's electronics. There are mech parts. It simply won't last forever, it's normal.
Ok, so: I would like some kind of device, which I could connect to my laptop and see it as a normal hard disk, a storage device.
But, it should be a special one: e.g. it should be composed by at least TWO separate hard disks (but it would be nice to have the possibility of adding as many as I can buy).
Let me call them the "main" and the "backup" disk.
The main disk should be used as I normally do with the internal SATA disk. But, there should be some kind of controller synching whatever changes on the main disk, on the backup disk.
This way, if laptop brokes, I still have all my data on the external disk. And if the main disk fails, I still have everything on the backup one: so I can replace the main with a new hard disk, press a (hardware or software) button, and everything from backup to new main is copied, and they start synching again. Or, if the backup fails, I'll replace the backup disk, press a button, and voila'.
And, if the device controller breaks, I can pick one of the disks and put it in a usb external disk case and continue working as nothing happened (or until I buy a new one of this kind of special device).
I don't know if my explanation is understandable, but I hope you got the idea and you know something similar I can buy.
Another solution, if you know of one, would be a software solution which I should configure for the same business, telling it two (or more) external hard disks I want to use as main and backup devices.
Or, if you can suggest some kind of hacker solution for Windows XP, with rsynch and such things, it would be ok too.
Free software would be appreciated, but eventually if some good commercial solutions exist don't exclude them.