What are my options with a downloaded Rackspace cloud image?

If what you get after putting the .tar.gz back together and unpacking it results in a disk image, then you should be able to recover files from it.

To begin with, for best results you should be working from a Linux system, with plenty of drive space available (50GB or more). I'm not sure if this is even possible with Windows.

First put the file back together:

cat emergency*.tar.gz.* > image.tar.gz

Now unpack it:

tar -zxvf image.tar.gz

What comes next depends on what was in the tarball. Hopefully it's a single file containing a disk image. In that case, inspect it with:

kpartx -l *imagefile*

(Where imagefile is the name of the disk image file that came out of the tarball.)

You should see what looks like a partition table. If all looks well with the partition table, run:

kpartx -v -a *imagefile*

This will map the partitions in the image to /dev/mapper/loop0p*.

You should then be able to mount these partitions and look at their contents. Remember to mount the filesystems read-only (-o ro) to prevent further damage.

FYI, this almost definitely belongs on ServerFault.

The "emergency" files are showing up as ".tar.gz" in the file extension, which tells me that they should be tar archives that you can extract like a zip file. If you're on Windows, download 7-zip from http://7-zip.org and you should be able to open them.

I'm not sure what you'll find within since I've never been a Rackspace customer; but I hear that they have "fanatical support" so it may be within your power to ask them about their backup files and how to access them....

Best of luck.