detaching vmdk files on vmware vm
When the application failover happens in VMware Guest enviorments, the VCS is responsible for failing over the application to other vm/vcs node on diffrent ESX host. In a scenario where the ESX/ESXi host itself faults, the VCS agents begin to fail over the application to the failover target system that resides on another host. The VMwareDisks agent communicates with the new ESX/ESXi host and initiates a disk detach operation on the faulted virtual machine. The agent then attaches the disk to the new failover target virtual machine. In this senario, how are the stale i/o from failing over guest/ESX host avoided? Are we on the mercy of VMware to take care of it? With SCSI3 PR this was the main problem that was solved. Moreover in such senario's even a garceful online detach wouldnt have gone through. I didnt find any references on VMware discussions forums as well. My customer wants to know about it, before he can deploy the application. Thanks, Raf
Veritas InfoScale Operations Manager 7.0: Viewing the impact of enabling SmartIO
Veritas InfoScale Operations Manager 7.0 enables you to viewthe impact of enabling SmartIO in an interactive graphical format. Using this graph you can see the performance difference in a single view. You can view the following information for a host in a chart: This graph Displays Volumes - Total Bytes Read Number of bytes read from the SmartIO enabled volumes for the specified duration. Disks - Total Bytes Read Number of bytes read from the disks of the SmartIO enabled volumes for the specified duration. You can view the following information for an application in a chart: This graph Displays Volumes - Total Bytes Read Number of bytes read from the SmartIO enabled volumes for the specified duration. Disks - Total Bytes Read Number of bytes read from the disks of the SmartIO enabled volumes for the specified duration. Volumes - Average Read Latency Average read latency for the SmartIO enabled. For more information on SmartIO impactsee the following topic: Viewing the SmartIO Impact analysis chart Storage Foundation and High Availability and Veritas Operations Manager documentation for other releases and platforms can be found on theSORT website.
