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What is difference between APD and PDL?

What is difference between APD and PDL?

A clear distinction has been made between a device that is permanently lost (PDL) and a transient issue where all paths are down (APD) for an unknown reason….Permanent Device Loss (PDL)

SCSI Sense Code Description
H:0x0 D:0x2 P:0x0 Valid sense data: 0x2/0x4c/0x0 NOT READY/LOGICAL UNIT FAILED SELF-CONFIGURATION

What is APD in VMware?

All-Paths-Down (APD) situation occurs when all paths to a device are down. As there is no indication of whether this is a permanent or temporary device loss, the ESXi host keeps reattempting to establish connectivity.

How do I assign a user to a vCenter?

Click the Inventory object, then click the Permissions tab. Click on the plus (+) sign to Add Permissions….To create a role and assign the necessary privileges:

  1. Open a vSphere Client connection to the vCenter Server.
  2. Click Home > Administration > Roles > Add Role.
  3. Give the new role a name, then select these Privileges:

How do I enable APD timeout on host?

In vCenter, to enable the APD for NFS and set NFS heartbeat timeout.

  1. Select the node and go to Configuration > Software > Advanced settings.
  2. Go to Misc and set Misc.APDHandlingEnable to 1.
  3. Set NFS. HeartbeatTimeout to 30.
  4. Click OK.

What is Datastore APD?

An APD occurs when an ESXi host loses access to a LUN device but has not received a PDL SCSI sense code from the array. This could happen if there is a failure at the fabric or at the initiators.

What is vmware VMCP?

VMCP provides protection against datastore accessibility failures that can affect a virtual machine running on a host in a vSphere HA cluster. When a datastore accessibility failure occurs, the affected host can no longer access the storage path for a specific datastore.

How do I add users to my virtual machine?

Create a role

  1. Click Settings > Create > Create User Role.
  2. In the Create User Role Wizard, enter a name and optional description for the role, and then click Next.
  3. In Profile page, select the role, and then click Next.
  4. In Members, click Add to add user accounts and Active Directory groups to the user role.

How do I give someone access to my VM?

Select the virtual machine in a console and choose VM > Settings. The virtual machine settings editor appears. 2. Click the Options tab, then click Permissions.

What is VMCP in VMware?

Why vSphere ha restarted this virtual machine?

VMware HA restarts a virtual machine even if VMware HA is disabled at the cluster level. Disabling VMware HA ensures that VMware HA takes no action in case of a loss of a heartbeat from the virtual machines. In some cases, VMware HA restarts the virtual machine even if VMware HA is disabled at the VMware cluster level.

What is VMware proactive ha?

Proactive HA is a new feature integrated with server vendor monitoring systems. The cluster must use vSphere DRS for correct Proactive HA. With Proactive HA coming to the new server state Quarantine Mode, you must have a server vendor that supports Proactive HA and correctly configures the plugin to vSphere Web Client.

Can multiple people log into a VM?

With a Windows Server machine, you can have multiple users log in at the same time via RDP to one machine. Please note that as standard, Windows Server has only two TSclient licenses to allow this.

How do I check permissions in Vcenter?


  1. Select an object in the object hierarchy, for example a resource pool or virtual machine, and click Permissions.
  2. You can then view the privileges associated with each group. On the vSphere Client Home page, click Administration. Under Access Control, click Roles. Click a role name (CloudAdmin, for example).

How do I share a VM with someone else?

How do I share my VM?

  1. Head over to VM settings and locate the “Share VM” feature.
  2. Turn on VM Sharing and add the username of a Koding user with whom you wish to share your VM with.
  3. The user with whom the VM has been shared will now see an accept/reject notice.

How does vCenter HA work?

vSphere HA provides high availability for virtual machines by pooling the virtual machines and the hosts they reside on into a cluster. Hosts in the cluster are monitored and in the event of a failure, the virtual machines on a failed host are restarted on alternate hosts.

What is difference between vSphere ha and proactive ha?

In your typical server failure, the server just goes down and HA restarts virtual machines. However, with vSphere proactive HA, it allows you to configure certain actions for events that MAY lead to server failure.

Does VMware HA use vMotion?

VMware HA and vMotion are two interwoven processes; VMware HA is dependent on vMotion. The technology of the migration process is designed so that there is no downtime and the user does not even notice these actions.