Veritas SFHA 6.2: Layered volume enhancements for recovery and snapshots
SFHA 6.2 introducesa new enhancement for layered volumes. A layered volume is a virtual Veritas Volume Manager object that is built on top of other volumes. The layered volume structure tolerates failure better and has greater redundancy than the standard volume structure. The enhancement ensures that when storage disconnection and subsequent reconnection happen, only inconsistent regions in the affected sub-volume are synchronized using the FastResync feature. In case of a storage failure, the mirror of the sub-volume on that storage will be detached and the future I/Os on the sub-volume will be tracked by the DCO associated with the parent volume. When such a detached mirror is reattached after restoring storage connectivity, only regions that are inconsistent in the mirror will be synchronized using the FastResync feature. Prior to this release, for a layered volume, if the storage within a mirror of a sub-volume became inaccessible, it led to full synchronization of that mirror when the storage was reconnected. For more information about FastResync and layered volumes: About FastResync About layered volumes Veritas SFHA documentation for other releases and platforms can be found on the SORT website.Veritas SFHA 6.2: SmartIO support for SF Oracle RAC environments
The SmartIO feature of Storage Foundation and High Availability Solutions (SFHA Solutions) enables data efficiency on your SSDs through I/O caching. With SmartIO, you can optimize the cost per IOPS. SmartIO does not require in-depth knowledge of the hardware technologies underneath. SmartIO uses advanced, customizable heuristics to determine what data to cache and how that data gets removed from the cache. The heuristics take advantage of SFHA Solutions' knowledge of the characteristics of the workload. SmartIO supports read and write caching for VxFS file systems mounted on VxVM volumes, in several caching modes and configurations. In SF Oracle RAC environments, when SmartIO is enabled on multiple nodes, the Group Lock Manager (GLM) library keeps cache on each node coherent. Read caching for applications running on VxVM volumes Read caching for applications running on VxFS file systems Database caching on VxFS file systems Database caching on VxVM volumes Note: SmartIO writeback caching is not supported in SF Oracle RAC environments. To use SmartIO, you set up a cache area on the target device. You can do this task simply with one command, while the application is online. When the application issues an I/O request, SmartIO checks to see if the I/O can be serviced from the cache. As applications access data from the underlying volumes or file systems, certain data is moved to the cache based on the internal heuristics. Subsequent I/Os are processed from the cache. You can also customize which data is cached, by adding advisory information to assist the SmartIO feature in making those determinations. For more information, see the Storage Foundation and High Availability Solutions SmartIO for Solid State Drives Solutions Guide. Veritas SFHA documentation for other releases and platforms can be found on the SORT website.
InfoScale 7.0 for Windows: About the product correlation between Symantec Storage Foundation and High Availability Solutions and Veritas InfoScale Family
In the 7.0 release, the following products from Symantec Storage Foundation and High Availability Solutions are rebranded and repackaged under the Veritas InfoScale family. Storage Foundation (SFW) Storage Foundation and High Availability Solutions (SFW HA) Cluster Server (VCS) Dynamic Multi-Pathing for Windows (DMPW) The Veritas InfoScale family consists of the following products: Veritas InfoScale Foundation Veritas InfoScale Availability Veritas InfoScale Storage Veritas InfoScale Enterprise The following table depicts the existing-to-new product correlation: Existing product New product SFW Basic Veritas InfoScale Foundation VCS Veritas InfoScale Availability SFW Veritas InfoScale Storage SFW HA Veritas InfoScale Enterprise As a result of repackaging the following changes apply: DMPW and VBS are not available as separate products. The following product options are not available as user-selectable options during the product installation. All these features are now available by default with the concerned InfoScale product. FlashSnap Replace Disk Management Snap-in with SFW VEA GUI Volume Replicator (VVR) Fast failover Global Cluster Option For information about the simplified product packaging, changes to the user-selectable product installation options, and the components that are offered in each InfoScale product, see: Veritas InfoScale™ What's New Guide InfoScale documentation for other platforms can be found on the SORT website.
