Re: Limit on number of servers?

On 4/9/2019 12:05 PM, Susan Litzinger wrote:
> Does anyone know if there is a limit or preference on how many database
> servers should be in an AFS installation? 
> 

For OpenAFS the hard coded server limit for UBIK services is 20 and the
maximum number of vlservers that can be specified in a CellServDB is 8.

The maximum number of servers that any particular cell can successfully
operate might be as low as 3 depending on how busy the servers are, how
frequently write transactions occur, and the network path characteristics.

A minimum of 3 non-clone servers are required to permit write
transactions to succeed when one of the servers is shutdown or becomes
unreachable.

For AuriStorFS the maximum UBIK server limit and maximum number of
vlservers that can be specified in a cell configuration is 80.
There are no performance restrictions that limit their use.

Jeffrey Altman

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