Change Operating System Versions

Vaults are not compatible with changes of the Windows operating system version running on the Meridian server. This issue affects server operating system upgrades and downgrades as well as vaults moved or restored to a new server with a different operating system version. The reason is that the Windows API sorting functions that support National Language Support (NLS) change between each Windows version.

When an old (prior to 2008a SP1) Meridian vault is upgraded to a newer version on the same operating system version, the existing vaults are not visible because they lack the operating system version and NLS version information that is stored in vaults as described below. In that case, the tool described below can be used with its update option to add the information to the vault. The tool can also be used to verify vault compatibility with the current operating system with the verify option. Use the update option of this tool only if the Meridian software has been upgraded to version 2008a SP1 or later and the operating system version has not changed.

Important!

In the preceding scenario, the tool will not upgrade a vault created on one Windows version so that it can be opened or restored on a different Windows version without serious damage occurring.

Vaults created by newer versions of Meridian (version 2008a SP1 and later) are also affected by this issue but the operating system version and NLS version information are stored in the vault and a check of this information is performed in the software that will prevent the vault from opening on a different operating system unless the vault is properly reindexed as described below.

There are only two ways to safely transfer an existing vault from a computer running one Windows version to another version:

  • Import the vault from the computer running the first operating system into a new vault on the computer running the second operating system. After import, no further action is necessary.

  • Reindex the vault on the second operating system with the icosnlsver tool described below.