Objective 3.1 – Configure Automated Pools Using Linked Clones
For this objective I used the following resources:
- VMware View Administration documentation
- VMware KB Article Differences Between QuickPrep and Sysprep
Identify Floating vs. Dedicated Assignments
- Dedicated Pool – In a dedicated assignment pool, each user is assigned to a desktop. Users receive the same desktop each time they login.
- Floating Pool – In a floating assignment pool, users receive different desktops each time they log in.
Identify Persistent Disk Settings
Identify the Disposable Disk Settings
The blueprint has each of these broken out separately, but as each option is configured on the same screen (see below) I thought I would tackle them together.
- Persistent Disk – Allows you to store Windows user-profile data on a separate disk. Using a persistent disk allows you to preserve users data and settings even during View Composer tasks (refresh, recompose, and rebalance). Another added feature is the ability to detach and reattach the persistent disk to another virtual desktop. Note, this can’t be used as a migration tool from Windows XP to Windows 7. Persistent disks can only be reconnected to the same source/destination OS.
- Disposable Disk – Use a disposable disk when redirecting the guest OS’s paging file and temp files. The disk size needs to be larger than the page file size of the guest OS.
Identify Pools Settings
|Connection Server Restriction||
|Remote Desktop Power Policy||Determines how a virtual machine behaves when the user logs off of the associated desktop|
|Automatically Logoff After Disconnect||
|Allow Users to Reset Their Desktops||Allow users to reset their own desktops without administrative assistance|
|Allow Multiple Sessions Per User||Allow a user to connect to multiple desktops in the pool at the same time.|
|Delete Desktop After Logoff||Select whether to delete floating-assignment, full virtual machine desktops.
|Delete or Refresh Desktop on Logoff||Select whether to delete, refresh, or leave alone floating-assignment, linked-clone desktops.
|Refresh OS Disk After Logoff||Select whether and when to refresh the OS disks for dedicated-assignment, linked-clone desktops.
|Default Display Protocol||Select the display protocol that you want View Connection Server to use to communicate with View Clients
|Allow Users to Choose Protocol||Allow users to override the default display protocol for their desktops by using View Client|
|Windows 7 3D Rendering||You can select whether to enable 3D graphics rendering if your pool comprises Windows 7 desktops that run on vSphere 5.0 or later, PCoIP is the selected protocol, and the Allow users to choose protocol setting is set to No.When you select this feature, you can configure the amount of VRAM that is assigned to desktops in the pool. You can select at most two monitors for your View desktops. The maximum resolution of any one monitor is set to 1920×1200 pixels. You cannot configure this value|
|Max Number of Monitors||If you use PCoIP as the display protocol, you can select the maximum number of monitors on which users can display the desktop.
When the Windows 7 3D Rendering setting is not selected, the Max number of monitors setting affects the amount of VRAM that is assigned to desktops in the pool. When you increase the number of monitors, more memory is consumed on the associated ESX hosts.
When the Windows 7 3D Rendering setting is selected, you cannot change the maximum resolution of any one monitor. The resolution is set to 1920×1200 pixels.
|Max Resolution of Any One Monitor||If you use PCoIP as the display protocol and you do not select
the Windows 7 3D Rendering setting, you should specify the
maximum resolution of any one monitor.
When the Windows 7 3D Rendering setting is not selected,
the Max resolution of any one monitor setting affects the
amount of VRAM that is assigned to desktops in the pool.
When you increase the resolution, more memory is
consumed on the associated ESX hosts.
When the Windows 7 3D Rendering setting is selected, you
cannot change the maximum resolution of any one monitor.
The resolution is set to 1920×1200 pixels.
|Adobe Flash Quality||Determines the quality of Adobe Flash content that is displayed on Web pages.
|Adobe Flash Throttling||Determines the frame rate of Adobe Flash movies. If you
enable this setting, you can reduce or increase the number of
frames displayed per second by selecting an aggressiveness
Identify Provisioning Settings
|Enable Provisioning||Instructs View Manager to create (provision) desktops for the pool|
|Stop Provisioning on Error||Desktop provisioning (creation) will stop if an error is encountered during desktop creation|
|Virtual Machine Naming||
|Max Number of Desktops||The maximum number of desktops that will be provisioned for the pool|
|Number of Spare (Powered On) Desktops||Number of desktops that will be available and “idle” to accept in coming connections|
|Provision Desktops on Demand||Desktops will be provisioned “as needed” as users connect|
|Provision All Desktops Up-Front||All desktops for the pool are provisioned (see Max Number of Desktops)|
Identify vCenter Server Resource Settings
View Composer leverages vCenter for it provisioning operations. By default vCenter is configured to allow “Max concurrent provisioning operations” at 8 and “Max concurrent power operations” at 5. The options can be modified in View Administrator by going to View Configuration –> Servers –> Highlight your vCenter and click “Edit”. Under “vCenter Server Settings” click the “Advanced’ icon and modified the settings as needed:
Identify Guest Customization Settings (e.g., QuickPrep, Sysprep)
Note - Information taken directly from VMware KB Article Difference Between QuickPrep and Sysprep
QuickPrep is a VMware system tool executed by View Composer during a linked-clone desktop deployment. QuickPrep personalizes each desktop created from the Master Image. Microsoft Sysprep is a tool to deploy the configured operating system installation from a base image. The desktop can then be customized based on an answer script. Sysprep can modify a larger number of configurable parameters than QuickPrep.
During the initial startup of each new desktop, QuickPrep:
- Creates a new computer account in Active Directory for each desktop
- Gives the linked-clone desktop a new name
- Joins the desktop to the appropriate domain
- Optionally, mounts a new volume that contains the user profile information
This table lists the main differences between QuickPrep and Sysprep
|Removing local accounts||No||Yes|
|Changing Security Identifiers (SID)||No||Yes|
|Removing parent from domain||No||Yes|
|Changing computer name||Yes||Yes|
|Joining the new instance to the domain||Yes||Yes|
|Generating new SID||No||Yes|
|Language, regional settings, date, and time customization||No||Yes|
|Number of reboots||0||1|
|Requires configuration file and Sysprep||No||Yes|