ihuSetArchiverProperty

Use the ihuSetArchiveProperty function to change the value of specific Historian server options.

Prototype

ihuSetArchiverProperty
(long serverhandle,
MSO Char *ArchiveProperty,
MSO Char *PropertyValue)

The following properties are supported:

Table 1. Archiver Properties
Property	Read/Write Access	Values	Description
`ARCHIVER_PROP_CREATEOFFLINEARCHIVES`	Read/Write	`1`, `0`	When set to `0`. (false) writes before the start time of the earliest archive are not enabled. Set to `1` only when you are migrating legacy data, and set the value back to `0` after migration is complete. Leaving this value set to `1` can cause excessive archive creation, especially when data is sent to the archiver out of order.
`ARCHIVER_PROP_CONFIGSERIALNUMBER`	Read-Only		A large value that changes when the tag configuration changes. Typically used to cache configuration properties such as a set of tags. You can determine when your cache is out of date by comparing your saved serial number with the current serial number.
`ARCHIVER_PROP_ACTIVEHOURS`	Read/Write	`1-232800` hours (30 years)	The number of hours before the present time that the archive data became read-only. When migrating legacy data, you might need to set a large value.
`SECURITY_PROP_STRICTCLIENTAUTHENTICATION`	Read/Write	`1`. `0`	Enables or disables strict client authentication. Set to `1` (true) by default for new Historian installations. When set to `1`, only version 4.7 or later clients can access the Historian server.
`SECURITY_PROP_STRICTCOLLECTORAUTHENTICATION`	Read/Write	`1`. `0`	Enables or disables strict collector authentication. Set to `1` (true) by default for new Historian installations. When set to `1`, only version 4.7 or later collectors can access the Historian server.

The ihuSetArchiverProperty returns the following values:

To change this property...	You must be a member of this group...
`ARCHIVER_PROP_CREATEOFFLINEARCHIVES`	ihArchive Admins or ihSecurity Admins
`ARCHIVER_PROP_ACTIVEHOURS`	ihArchive Admins
`SECURITY_PROP_STRICTCLIENTAUTHENTICATION`	ihArchive Admins
`SECURITY_PROP_STRICTCOLLECTORAUTHENTICATION`	ihArchive Admins