Abstract: Techniques manage objects in data storage equipment. Such techniques involve receiving a request to create a new object for a particular object family (e.g., a collection of related data storage objects such as a production volume, snapshots, clones, snapshots of clones, etc.). Such techniques further involve deriving, for the particular object family, a total object count based on an active object count and a deleted object count for the particular object family. Such techniques further involve, in response to the request, performing an object management operation that (i) creates the new object when the total object count is less than a predefined total object count threshold and (ii) prevents creation of the new object when the total object count is not less than the predefined total object count threshold.

Abstract: A method of responding to failures in a tiered storage system is provided. The method includes (a) rebuilding a set of failed storage extents belonging to a first storage tier; (b) receiving a notification that a particular storage extent has failed while rebuilding the set of failed storage extents belonging to the first tier; and (c) upon determining that the particular storage extent belongs to a second storage tier that has a higher priority than does the first storage tier: (1) pausing rebuilding the set of failed storage extents belonging to the first storage tier, (2) rebuilding the particular storage extent, and (3) resuming rebuilding the set of failed storage extents belonging to the first storage tier after rebuilding the particular storage extent. An apparatus, system, and computer program product for performing a similar method are also provided.

Abstract: A method of responding to failures in a tiered storage system is provided. The method includes (a) rebuilding a set of failed storage extents belonging to a first storage tier; (b) receiving a notification that a particular storage extent has failed while rebuilding the set of failed storage extents belonging to the first tier; and (c) upon determining that the particular storage extent belongs to a second storage tier that has a higher priority than does the first storage tier: (1) pausing rebuilding the set of failed storage extents belonging to the first storage tier, (2) rebuilding the particular storage extent, and (3) resuming rebuilding the set of failed storage extents belonging to the first storage tier after rebuilding the particular storage extent. An apparatus, system, and computer program product for performing a similar method are also provided.