Files in backup folder

Hi,

I have my back-ups set to run weekly and save the last 10 backups copies on my server. My host (hostgator) also does weekly back-ups but they always fail because my account is too large. It turns out I have a lot of files in my backup folder that I don’t recognized.

This is my most recent backup.
weddingsbynneka-com-backup-complete-2013-11-24-23-03-43.zip – 7.56Mb

At the same time this file was saved.
zilO3bgf – 2.94Gb (no extension or file type)

Is this file part of the backup? I have 13 of these files at almost 3Gb each. The most recent 10 were created at about the same time as the backup zip file.

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