Hi
is there any way to take a backup from Operating System located on the hard drive of Appliance ?
i appreciate any help
thanks.
You mean backup the operating system, not just the database? No, not officially.
Outside of that, you could remove the drive and connect it to a PC and use tools like Gparted or Partition Magic to image or duplicate the drive, it would allow you to re-image a new drive, but it would be back to the time you imaged it unless you restored a database backup on top if it. BTW, I have not tested this and partition and drive cloning on unsupported operating systems is questionable at best as a recovery option.
I would suggest either using the officially supported Mitel RAID option, or just getting a second hard drive, install the software and leave it sit as spare. We have a couple customers that do this, and basically every time we upgrade them we do it twice. Upgrade the first drive, backup, then swap drives and upgrade that one and restore the database. I'm not sure it's the best solution but it was their idea.