Archive for the ‘VMware’ tag
vStorage APIs for Array Integration (VAAI)
vStorage API for Array Integration (VAAI) is an application program interface (API) framework from VMware that enables certain storage tasks, such as thin provisioning, to be offloaded from the VMware server virtualization hardware to the storage array.
Offloading these tasks lessens the processing workload on the virtual server hardware. For a storage administrator to make use of VAAI, the manufacturer of his storage system must have built support for VAAI into the storage system.
Deploying VAAI will provide a performance benefit for the following conditions:
- When a virtual disk has VMDK files stored on an NFS store.
- When a virtual disk is deleted.
What is are storage capabilities?
A storage capability outlines the quality of service that a storage system can deliver. It is a guarantee that the storage system can provide a specific set of characteristics for capacity, performance, availability, redundancy, and so on.
If a storage system uses Storage APIs – Storage Awareness (VASA), it informs vCenter Server that it can guarantee a specific set of storage features by presenting them as a storage capability. vCenter Server recognizes the capability and adds it to the list of storage capabilities in the Manage Storage Capabilities dialog box. Such storage capabilities are system-defined. vCenter Server assigns the system-defined storage capability to each datastore that you create from that storage system.
Storage capabilities can be generated (a) manually by an administrator or (b) retrieved through the VMware APIs for Storage Awareness (VASA).
This was a great update on UC on UCS from Cisco’s Dan Keller. Very good introduction for virtualization “n00bs” like me.
- Fundamentals of UC on UCS Architecture
- UC on UCS Tested Reference Configurations (TRC)
- Virtual Machine Sizing and Placement
- UCS Server Selection
- VMware/vCenter Design Best Practices
- LAN/SAN Design Best Practices
- Migration Strategies