In many storage systems this is accomplished via a physical LUN migration between tiers. The result of this style of automated data movement, combined with an administrator driven QoS capability eliminates the need for Storage vMotion and all the pains associated with it. The time that the administrator spends tuning storage performance is also reduced.
Essentially once performance parameters are set, it becomes the responsibility of the storage system to make sure they are met.
Finally, an implementation of a single storage system with intelligent, QoS driven data movement actually encourages the consolidation of workloads. The more data that can be placed on the system the less work there is for the storage administrator. Moreover, since the consolidated system has both flash and hard disk it has both the performance needed to meet the demands of mission critical workloads and the capacity to meet the overall storage requirements of the enterprise.
Sponsored by NexGen Storage. NexGen Storage offers value-driven hybrid flash arrays that let customers prioritize data and application performance based on business value.
For more information, visit www. Twelve years ago George Crump founded Storage Switzerland with one simple goal; to educate IT professionals about all aspects of data center storage.
He is the primary contributor to Storage Switzerland and is a heavily sought after public speaker. Prior to founding Storage Switzerland he was CTO at one of the nation's largest storage integrators where he was in charge of technology testing, integration and product selection. Email Address:. Skip to content. Why is Storage vMotion Invoked?
Why Storage vMotion Hurts Storage vMotion is a capability that most VMware administrators use with extreme discretion, and they try to perform these movements during maintenance windows. Stopping The vMotion Pain It is always easier to manage one component instead of multiple components, and storage is no different.
Conclusion The result of this style of automated data movement, combined with an administrator driven QoS capability eliminates the need for Storage vMotion and all the pains associated with it.
Sponsored by NexGen Storage About NexGen Storage NexGen Storage offers value-driven hybrid flash arrays that let customers prioritize data and application performance based on business value.
Like this: Like Loading About George Crump. Trending Now. Storage vMotion, working in conjunction with Storage DRS can work to optimize your storage capacity across datastores. Using the datastore cluster construct in vSphere, the multiple datastores that are part of the datastore cluster can be monitored by Storage DRS so that once capacities reach a certain threshold, VMs are proactively moved to alleviate storage capacity pressure that may build on a single datastore.
With Storage DRS using Storage vMotion to utilize capacity as efficiently as possible, it allows more effectively making use of all available storage. This is difficult to do with manual efforts. Using the configured thresholds, it allows determining the amount of space utilized on a datastore before Storage vMotion operations kick into play. Also, you can set the Minimum space utilization difference to configure which datastores should be considered as destinations for virtual machine migrations using Storage vMotion.
This is the required difference in utilization between the destination and the source datastores. A look at the minimum space utilization difference for SDRS. Another great benefit of performing a Storage vMotion is having the ability to perform a live disk transformation of a running virtual machine. The Storage vMotion process makes transforming disk types possible.
This 1 TB disk is provisioned and storage space is consumed immediately in your datastore. However, if the server was grossly overprovisioned on space and only a small amount of the 1 TB volume is used for storing actual data, a thin provisioned disk would allow reclaiming the space consumed with the thick provisioned disks. Changing the disk type when performing a Storage vMotion.
The process is rather simple. Right-click a virtual machine in the vSphere inventory, and select Migrate. This launches the Migrate wizard. On the first Select a migration type screen, you have three choices:. The second and third options involve using Storage vMotion. You can choose to change only the storage, or change both the storage and the host housing the virtual machine.
On the Select storage screen, choose the virtual disk format and the target datastore for the Storage vMotion. Choose the virtual disk format and target datastore. Finally, on the Ready to complete screen, review the Storage vMotion operation to be performed and click Finish to begin the process. Completing the Storage vMotion wizard. This can easily be achieved with PowerCLI.
The below recorded capture is for the process to perform a Storage vMotion of a particular virtual machine and changing the type of disk as it is migrated to a different datastore.
You can use the output of the code capture to automate further processes such as Storage vMotion. Storage vMotion provides powerful capabilities to the VMware vSphere virtualized environment. This effectively allows freedom from the underlying storage when reconfiguration or other maintenance operations need to be performed. Traditional storage solutions do not provide the ability to safely and easily move production data from one location to another, especially while the workload is running.
Storage vMotion effectively achieves this end goal. However, it is important to note that Storage vMotion is not a form of data protection and is not meant to be used for disaster recovery purposes. Even with the capabilities it provides to your virtual environment, you still need to protect your data. This means you need to have a modern data protection solution that effectively allows backing up your data and storing it separately from your production infrastructure.
Vembu BDR Suite provides a powerful backup and replication solution for not only VMware but also Hyper-V environments that allows effectively backing up and replicating your data securely. This ensures the data is protected regardless of a hardware or other failure. This provides functionality that is not achievable with Storage vMotion alone.
Live migration and suspended migration require that the processors of the target host be the same vendor and family to provide the same instructions to the virtual machine after migration that the processors of the source host provided before migration.
Clock speed, cache size and number of cores may be different. When you attempt to migrate a virtual machine with vMotion, one of the following scenarios applies:. To improve compatibility between varying CPU instruction sets, it is possible to hide some CPU feature typical of that family to fix a watermark of common CPU instruction available, and be compatible different CPU model.
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