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Creating a second root user account
Run the adduser -u 0 -o -g 0 -G 0,1,2,3,4,6,10 -M root2 command from the ESX server console.
Omit the -M if you want a home directory created.
Run the passwd root2 command to create a password.
Guidelines for Extending a VMFS Volume
An extended VMFS volume may contain from two to 32 physical extents. Each extent is either a primary partition, or a logical partition within an extended partition. These extents can be on one LUN or on multiple LUNs. In the latter case, some of these LUNs can have multiple extents on the volume.
To safely extend a VMFS volume:
- Perform a backup of the VMFS volume.
- Shut down all except one of your ESX Server machines.
- On this active ESX Server system, shut down all virtual machines that access the VMFS volume.
- Extend this volume. Keep in mind that this procedure reformats the volume you choose as the extent candidate, which overwrites any existing data on that volume.
- After the volume extension has successfully completed:
- Restart the virtual machines that you shut down in step 3.
- Restart your other ESX Server machines.
- Schedule regular backups for the extended VMFS volume.
Warning: If one extent is corrupted or damaged, the entire volume becomes unusable.
Hardware and Firmware Requirements for 64-Bit Guest Operating Systems
VMware’s virtual machine monitor has traditionally used segmentation to provide isolation between the guest operating system and the virtual machine monitor. This is necessary because the guest operating system and virtual machine monitor share the linear address space.
A limited form of segmentation was reintroduced in long mode, in revision D AMD64 processors. As a result, AMD64 processors must be revision D or later to run 64-bit guest operating systems.
you do not see this option in the BIOS, contact your vendor to request a BIOS version that lets you enable VT support.
VT should be listed under ‘Other Intel Technologies’ if it is a feature of the CPU.
VMware distributes a free utility that can be used to determine whether or not your CPU is suitable for running 64-bit guest operating systems. You can download this utility from the VMware Web site at http://www.vmware.com/download/ws/drivers_tools.html (scroll down to Processor Check for 64-Bit Compatibility). VMware Server includes this utility in its product distribution, so you don’t need to download an additional tool.
Workstation 5.5 and higher and VMware Server (all versions) support virtual machines with 64-bit guest operating systems only on host machines that have one of the supported 64-bit processors:
- AMD Athlon 64, revision D or later
- AMD Opteron, revision E or later
- AMD Turion 64, revision E or later
- AMD Sempron, 64-bit-capable revision D or later (experimental support)
- Intel EM64T VT-enabled processors (experimental support)
Is Running Older VMware Tools in ESX Server Guests Supported?
“When you install a patched version of ESX Server, VMware expects you to upgrade VMware Tools to the latest version, included with that release. If you report a problem with a virtual machine that has an older version of the VMware Tools installed in the guest operating system, VMware Technical Support may ask you to upgrade the VMware tools to the version included with the ESX Server Patch in the process of troubleshooting that problem.
Unable to boot after ESX upgrade
- Determine if you can boot into Linux/Troubleshooting mode.
If you can boot in to Linux/Troubleshooting, run the following commands:
- esxcfg-boot -p
- esxcfg-boot -b
- If booting into Linux/Troubleshooting mode fails, ensure that the storage is disconnected and do a fresh installation. Ensure to select Keep Virtual Machines and VMFS Volumes intact.
- Reboot the ESX host.