Details
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New Feature
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Status: In Progress
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Major
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Resolution: Unresolved
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4.5.0
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Security Level: Public (Anyone can view this level - this is the default.)
Description
Currently all VMs in CloudStack have not been guaranteed IOPS from the primary storage, especially shared storage. In some cases (such as deploying a large number of VMs), this could lead to slow performance and high boot-time of VM.
In CloudStack 4.3, all VMs deployed in XenServer always have a child image VHD stay on the same storage repository with parent image (master image or golden image). Thus, this page describe a new approach in order to increase VM performance by decrease total IOPS in primary storage. The method is simply move the parent image to a new high-IOPS primary storage, similar with XenServer Intellicache feature. This method can reduce storage cost by 30-40%, compare to 80% of Intellicache.