Updating registry keys sp3 online vs offline dating
If you follow the v Sphere Flash Read Cache configuration recommendations documented in the v Sphere Storage guide and the v Sphere 5.5 Beta Release Notes, you can minimize the possibility of encountering this type of error.
Please note that this works only with the Windows drivers.
v Center Server will not be able to manage ESXi 5.5 [ESXi550-201608001] hosts, if you update ESXi before updating v Center Server to version 5.5 Update 3e.
For more information about the sequence in which v Sphere environments need to be updated, see KB 2057795.
The copyright statements and licenses applicable to the open source software components distributed in v Sphere 5.5 are available at on the Open Source tab.
However, there are a few reasons why a computer may use PIO instead of DMA, particularly when it's the hard disk port that falls back, not a CD/DVD drive port.
Read the following documentation: Top of Page For instructions about upgrading v Center Server, see the v Sphere Upgrade documentation.
In your v Sphere environment, you need to update v Center Server to v Center Server 5.5 Update 3e before updating ESXi to ESXi 5.5 Patch [ESXi550-201608001] released on 08/04/2016.
This is normal behavior and not a sign of any problem. (Peter Frank reported successful application on Windows 2000 with Service Pack 4.) DMA is an abbreviation for Direct Memory Access, an access method for external devices where the data transfer is not done by the central processor, but by a small special processor called DMA controller.
It uses a procedure called cycle stealing, where the central processor memory access cycles are delayed for very short times to intersperse DMA controller memory access cycles.