A proper planning is required to set up storage for ESXi system before formatting the LUNs with VMFS datastores. Keep in mind the following considerations when deciding the LUN:
Each LUN must contain only one VMFS datastore
If multiple VMs access the same VMFS, use disk shares to prioritize VMs.
Each LUN should have the correct RAID level and storage characteristic for the applications running...
Friday, June 21, 2013
SplitRX mode
SplitRx mode, a new feature in ESXi 5.0, uses multiple physical CPUs to process network packets received in a single network queue. This feature can significantly improve network performance for certain workloads.
Workloads like: ?
Multiple virtual machines on one ESXi host all receiving multicast traffic from the same source. (SplitRx mode will typically improve throughput and CPU efficiency...
DRS Automation Threshold
The migration threshold specifies the tolerance of imbalance of the Current Host Load Standard Deviation relating to the Target Host Load Standard Deviation. DRS assign a priority level to a recommendation and compared to the migration threshold. If the priority level is less than or equal to the migration threshold, the recommendation is displayed or applied.
Level 1 (Conservative)
When Selecting...
What’s in vCenter Database
The vCenter database mainly consists of alarm/event data, HA/DRS data, ESX host information, task/scheduled tasks and VM information. All ESXi server and VM configuration data is stored on each ESXi server and is simply read and displayed by vCenter. You can also use the vSphere Client to connect directly to the ESXi servers without vCenter and modify the same configuration data. Once you add the...
Sunday, June 16, 2013
VMFS-5 Enhancements
Unified 1MB File Block Size. Previous versions of VMFS used 1,2,4 or 8MB file blocks. These larger blocks were needed to create large files (>256GB). Very large files can now be created on VMFS-5 using 1MB file blocks.
Large Single Extent Volumes. In previous versions of VMFS, the largest single extent (LUNs) was 2TB. With VMFS-5, this limit has been increased to ~ 60TB.
Smaller...
Saturday, June 15, 2013
VMware Converter P2V / Cold Clone Process
The cold clone process when using the VMware Convert Cold Boot CD is pretty straight forward but in case anyone out there who haven’t tried using it before and would like to know what it looks like, this post serves to show the step-by-step instructions for using it to clone a physical...
Configuring HA on ESX hosts fails with the error: Cannot complete the configuration of the HA agent on the host (Re install HA agents)
Cannot configure HA on ESX hosts.Unable to configure the aam agent.Configuring HA on ESX hosts fails.In vCenter Server one or more hosts in the HA cluster report the error:Cannot complete the configuration of the HA agent on the host.ResolutionThis issue may occur if the vpxa agent on the ESX host is corrupted due to which you are unable to configure the aam agent.Note: the below troubleshooting...
ESXi 5 Tips & Tricks: Disable Tech Support Mode Warnings
ESX is officially gone and VMware has made the succession to ESXi complete. Still, some of us might want to log into ESXi's shell by enabling Tech Support Mode or Remote Tech Support via SSH. Now by enabling one of these two support modes, a yellow warning will appear on the host object in vCenter. If you select the Summary tab of the actual host itself, you will see a couple of messages that are...
Understanding/Using log files for troubleshooting
Log files are generally your best tool for troubleshooting any type of problem. ESX has many log files. Which ones you should check depends on the problem you are experiencing. Below is the list of ESX log files that you will commonly use to troubleshoot ESX server problems. The VMkernel and hosted log files are usually the logs you will want to check first.• VMkernel - /var/log/vmkernel – Records...
Unable to connect MKS
1) MKS console fails to open with the error: the process /usr/lib/bin/vmware-vmkauthd-start failed to launch properly This issue occurs when the vmware-vmkauthd service cannot start due to insufficient memory. To resolve this issue, be sure to maintain adequate memory levels.To ensure adequate available memory:Check for resource pools having reservations over all available memory. If resource...
VMware ESXi 5 Install
1. Either burn or mount the ESXi 5 iso image to the DVD drive of the server and let the server boot from dvd.
2. The dvd continues to boot.
3. Press enter to continue at the Welcome to VMware ESXi 5 Installation screen.
4. Press F11 to accept the End User License Agreement.
5. Select...
First Blog Entry !!!
Thanks for visiting Our site! this blog will mostly contain articles about virtualization stuff (VMware). we started this blog for only two reasons, first of all we enjoy sharing our knowledge and secondly memorizing all the problems, Queries and solutions is not an easy task to remember, this blog help to retain that knowledge.
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