VMWare is a powerful software tool that can empower ones IT staff to build a lot more flexible and resilient natural environment for business applications.vmware cloud computingThere are several benefits to utilizing VMWare with your SAN, NAS or iSCSI storage space infrastructure. The ultimate goal involving performance optimization is finding and eliminating all possible roadblocks that reduce the full utilization of the Core Four resources (CPU, Network, Memory, and Storage).
Repurposing and Retrofitting a legacy storage platform
Utilizing 10K 146 or 300GB fibre channel drives in leui with SATA drives
Swapping SATA for fibre channel drives
De-installed brand name named storage arrays and storage expansion upgradesComputer Drives: Fibre vs. Sata vs .. SSD vs. SAS
Assessing the correct tier for various applications is a critical step that should not be skipped. When determining which application to run on high-performance disks and which ones to save for SATA-based sections, it may help to ask yourself a few pre-determined questions first.
How critical is the VMWare environment to your enterprise?
What are the application-specific performance and provision requirements?
Special Requirements for High Provision
Production systems need to be designed to eliminate just about all single points of failure. Make sure that redundancy was made into the storage design at all levels of the virtualized stage. Make sure that people build in additional goes, HBAs and HBA options, and storage processors that induce effective and redundant access paths to your data.
This can be done in alot of ways:
Redundant Storage Components - Redundant SAN hardware such as HBAS, switches and directors and access ports are necessary for full redundancy. In certain cases, a redundant storage array may get in on the design
Redundant I/O Routes - Paths from the host or server to the storage array need to be redundant and switchable when a port, device, or connection failure should occur
Mirroring - In order to protection against failure of an entire LUN, mirroring may be implemented. Mirroring designates an additional LUN designed to capture all write operations to your primary LUN. LUN mirroring can be either be implemented in the SAN switch, server, or storage array stagePlanning Disaster Recovery
In the instance of a disaster scenario or even site failure, it may be asked to recover the failed functions and virtual machine data from your remote site. A storage array must allow access to the data from an alternate server to be able to begin the data treatment process. VMWare, as properly as VMWare Site Treatment Manager (SRM), makes this process easier as you dont need to to reinstall the OS for a separate physical machine. Administrators can restore the virtual machine image and continue working in the future.
Performance Tuning: What to Watch
If you have VMWare capacity planning equipment or performance monitoring abilities, here are a few performance metrics to watch on your storage selection:
I/O Deciphers
I/O Publishes articles
Disk Write Queue Length
Computer Read Queue Length
Typical Disk Sector Transfer Time period
I/O Examine Bytes
I/O Write BytesImproving Performance
When looking at improving performance for virutal machines and unfortunately your VMWare environment, there are several ways to increase speed.
First, ensure the LUN has enough capacity and the disk utilization isnt too big. You might begin experiencing degradation at high levels of utilization of volumes together with devices (80-90%).
