cim_snapshot.mof

Pegasus is an open-source implementationof the DMTF CIM and WBEM standards. It is designed to be por

// Copyright (c) 2005 DMTF.  All rights reserved.
// <change cr="ArchCR00066.004" type="add">Add UmlPackagePath
// qualifier values to CIM Schema.</change>
// ==================================================================
//  CIM_Snapshot
// ==================================================================
   [Deprecated { "No Value" },
       UMLPackagePath ( "CIM::Device::SccExtents" ),
    Version ( "2.7.0" ), Description (
       "Deprecated. Snapshots are now modeled in a more abstrct way "
       "using StorageExtent and StorageSynchronized. \n"
       "The Snapshot class is an optional construct. It can be used to "
       "represent an Extent that contains a full copy of another "
       "Extent, or the changes to that Extent when performing a "
       "delta-based (delta before or delta after) copy. \n"
       "Snapshot's definition in CIM is not equivalent to the act of "
       "creating a volume or file-based snapshot, or a point in time "
       "copy. It is at a much lower level and represents the use of "
       "storage to hold a copied image of an Extent, or to hold "
       "changes to an Extent. Use of the Snapshot object when making a "
       "full copy is only recommended if the purpose is to describe "
       "the existence of a copy. (This use will be very infrequent.) "
       "The problem with describing an Extent solely as a 'snapshot' "
       "is that when the snapshot/copy is broken, the object must be "
       "destroyed. Typically, this object still holds valid data, and "
       "would have to be reinstantiated. If the 'full copy' object is "
       "to be treated as a StorageVolume or more general Extent, then "
       "it should be modeled as such from the beginning - i.e., not as "
       "an instance of Snapshot but as an instance of a generic "
       "StorageExtent or StorageVolume. In this case, the Synchronized "
       "association would be used to describe that one StorageExtent "
       "is synchronized with another. \n"
       "When describing a delta-based snapshot/point in time copy, the "
       "Snapshot object represents the store holding the before/after "
       "image changes to the original Extent. For example, when doing "
       "a 'delta before' Snapshot, the resultant target would be "
       "modeled as a StorageExtent that is BasedOn the original Extent "
       "and the instance of Snapshot (that holds the changes to the "
       "original Extent).")]
class CIM_Snapshot : CIM_StorageExtent {

      [Deprecated { "CIM_Synchronized.SyncMaintained" }, Description (
          "True indicates that the snapshot is synced.")]
   boolean IsSynced;

      [Deprecated { "CIM_Synchronized.WhenSynced" }, Description (
          "The time stamp indicating when the sync occurred.")]
   datetime SyncTime;
};