Database Disk Image Malformed

{kb-symptom}

CDP Server returns the following error message:

"Error Server [11] reset(): database disk image is malformed(11)"

To workaround this issue investigate your hardware and O/S for faults. If the error is not temporary you will need to create a new Disk Safe.

If a CDP 3 Disk Safe is corrupted by any one of the events below, it can not be repaired.
• Delete a file in the Disk Safe Folder.
• Make an incomplete copy of the Disk Safe folder thereby corrupting the copy.
• Making a copy of the Disk Safe files when the Disk Safe is open and being written to by the CDP Server thereby corrupting the copy.
• A hardware or O/S fault causing incorrect data to be written to Disk Safe files.
• A faulty hard disk or storage controller failing to flush volatile cache when requested can break protection from unclean shutdowns and power failures.
• Rogue process writing to the Disk Safe files.
• Soft Linking any files Inside of the Disk Safe Folder. If the block deltas store and its associated write journal (created at run time) end up on different file systems data loss can occur if there is a crash or power failure.
• Failure to store the Disk Safe on a journaling file system can cause the write journal to be lost or moved to lost+found. If this happens the Disk Safe may likely become damaged beyond repair.

Note
Windows NTFS and Linux Ext3, Ext4, XFS, and ReiserFS ARE Journaling File Systems.
• NFS (Linux / Unix Network File System) faults or bugs.
If using NFS on Linux, R1Soft recommends you use the latest available NFS versions and latest stable Linux kernels, and do not export NFS file systems with asynchronous writes (async option).

• It is possible for hardware or O/S faults to cause incorrect data to be read from the Disk Safe at the time of restore even though the data on disk media is correct. In these cases, some or all of the archived data may appear damaged beyond repair until the fault is corrected. Determining if the fault is occurring only on read or if the data is damaged on media may be difficult or impossible. Furthermore, no amount of checking or validating of data in the Disk Safe can prevent or pre-warn these kinds of faults.