Emc IP Holding Company LLC

Minjie Zhang

Peiyu Zhuang

Yue Zhao

Arun Joseph

Zhen Zhang

Fei Dong

Joshua D Hutt

Yiming Bao

Described are techniques for synchronizing system times. A request is sent from a first system to a second system to obtain a current remote system time. A first time value denotes a time when the request is sent. A response, including the current remote system time, is received from the second system. A second time value denotes a time when the response is received by the first system. An average of the first time value and the second time value is determined A difference between the current remote system time and the average is determined. It is determined whether the difference is more than an endurance value. Responsive to determining the difference is more than the endurance value, the difference is used to convert a remote system time of the second system to an equivalent local system time of the first system.

Converting and synchronizing system times

Techniques are disclosed for monitoring the performance of transient virtual volumes created for a virtual machine. Each transient virtual volume is created in response to a first trigger event, used by the virtualization environment solely to perform a single function supporting execution of the virtual machine, and deleted in response to a second trigger event. When creation of a current transient virtual volume is detected, and while the virtualization environment uses the current transient virtual volume to perform a single function supporting execution of the virtual machine, performance data is collected for the current transient virtual volume, and combined with performance data collected for at least one other, previously deleted transient virtual volume that was used solely to perform the same single function supporting execution of the same virtual machine. The combined performance data is represented as performance data for a single monitored virtual volume associated with the virtual machine.

Monitoring performance of transient virtual volumes created for a virtual machine

Techniques for visualizing performance of file-based VVols and block-based VVols for aiding in administration of a data storage system operating in a virtualization environment allow performance of these different types of VVols to be visualized side-by-side using a common set of performance metrics. Thus, in one embodiment, the performances of file-based and block-based VVols are both converted into a mutually-compatible format and rendered for display together on screen.

Techniques for converging metrics for file- and block-based VVols

Techniques for visualizing performance of VVols for aiding in administration of a data storage system operating in a virtualization environment allow performance of these VVols to be visualized in a highly-flexible manner. Thus, in one embodiment, the performances of all VVols within a storage container are aggregated together for easy comparison among the aggregated performances of different storage containers.

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Shanghai, China

Minjie Zhang