HA and DRS

Similar Questions

• Please explain SVmotion (Storage Vmotion) and DRS for storage in simple words

  Friends,

  I little confusing... could you please contact Storage vmotion and DRS for storage in simple words and the important points to remember in this regard...

  Kind regards

  Sirot

  9884106697

  Storage DRS is a feature that you allow warehouses of data aggregated on a single object (cluster) and recommend the implementation of disks in virtual machine based on the performance of the store of data and the available space on the data store.

  The DRS storage uses Storage vMotion to migrate virtual (online) computers from a data store to another to balance data store performance and space.

  You can use Storage vMotion without storage DRS too, moving virtual machine between clusters of DRS storage and warehouses of data even from the local level to the data store shared.

• Disabled - HA and DRS cluster hosts do not appear in vCOPS

  Have a cluster HA and DRS disabled so that each of the 10 hosts act as autonomous.  In vCOPS 5.8 UI, the hosts appear in the accounts for the cluster but cannot explore them or access it from the search box.  Any ideas?  Thank you

  Found - http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2068303 problem solved.

• Change the PowerCLI Script to use the DRS and DRS storage

  Hello

  I have a PowerCLI script that specifies a host and a data store to create a new virtual machine, which has served us well. Now we have activated the DRS and DRS storage and I wonder what to change in order to take advantage of these features. Are there commands to specify a cluster and the cluster data store and let the DRS to decide the initial investment for a new virtual machine? At the moment we put all hosts and the warehouses of data as variables and use them in the line below.

  Thank you.

  $newVM = New-VM-name $NewVMname - VM $TemplateName Datastore - $datastore - VMHost $vHost - confirm: $false - location $myName

  You set a Datastorecluster?

  If Yes, then you can replace the value of parameter data with the datastorecluster object store.

  Replacing a VMHost with a cluster is not taken in charge I'm afraid.

  But you can use something like this

  New-VM-name TestVM Datastore - DSC - ResourcePool (Get-Cluster-name mycluster |) Get - Resourcepool - name of resources)

  This will automatically select the VMHost.

  The virtual machine appears in the root of the cluster.

  DSC is the name of a datastorecluster in the cluster mycluster

• HA and DRS pre-Caribbean

  Dear team,

  Please let me know prerequisites them HA and DRS.

  concerning

  Mr. VMware

  In both cases:

  -> Storage access shared

  -> The correct license level

  -> Hosts configured in a cluster

  -> A permitted vMotion VMkernel port group to the SRD

• Advanced features of ESXi 4.1 - vMotion, HA and DRS.

  Hi all

  I have a dell poweredge 1950 with 2 processors dual core, 8 GB ram and 2 hard drives. I would like to install a virtual laboratory for features in advanced practical such as vMotion, HA and Drs I know I need 2 ESXi host and storage San iSCSI shared to implement.

  I have only 1 physical box that has 1 ESXi host installed. I have the vCenter, iSCSI SAN (openfiler) installed in a virtual machine. I have a laptop that has vSphere client to connect to the ESXi host through vCenter.

  Is it possible to install 2nd ESXi host in a VM on the ESXi host 1 and perform advanced functions as mentioned above. I'd appreciate your suggestions and advice.

  Thank you

  -rmshah5050.

  Can't do anything as an automatic resource pools configuration.

  How much memory assign you to virtual ESXi hosts. To properly configure HA you must assign at least ~2.5 GB to hosts.

  André

• vSphere 4.1 HA and DRS technical Deepdive, the book!

  As many questions about this forum can be found in our book that has just been released, I wanted to share the following:

  VMware vSphere 4.1 HA and DRS technical Deepdive zoomed in on two key elements of each based VMware infrastructure and

  is not a "how to" Guide. It covers the basic steps needed to

  create a cluster VMware HA and DRS, but even more important, explain it to

  concepts and mechanisms behind HA and DRS, which will allow you to

  well-informed decisions. This book will take you the trenches of

  HA and DRS and give you the tools to understand and implement for example

  HA admission control policies, the DRS resource pools and resources

  distribution settings. In addition, each section contains basic design

  principles that can be used to design, implement or improve

  VMware infrastructure.

  Coverage includes:

  • HA the node types

  • HA isolation detection and response

  • HA admission control

  • Monitoring VM

  • HA and DRS integration

  • Algorithm of imbalance DRS

  • Resource pools

  • Impact of reservations and limits

  • CPU resources planning

  • Scheduler memory

  • DPM

  I hope you enjoy it and don't mind sharing this with you.

  Duncan

  VMware communities user moderator | VCDX

  -

  ---

  Out now: vSphere 4.1 HA and DRS deepdive

  Blogs: http://www.yellow-bricks.com | Twitter: http://www.twitter.com/DuncanYB

  Hi Duncan,.

  This book is available in India?

  I ordered the book on Jan. 9 in the Amazon and I get Feb. 22.

  Thank you

  Prakash

• HA and DRS direct mapped LUN.

  I have a virtual machine directly mapped with a 500 GB iscsi LUNS.

  Can any body tell me if HA and DRS will be possible or not.  As I know HA and DRS is possible in RDMS.

  > I have a virtual machine directly mapped with a 500 GB iscsi LUNS.

  I guess you mean that LUN is connected via initiation iSCSI software of guest operating system.

  Yes, HA and DRS are entirely compatible with this scenario.

  ---

  MCITP: SA + WILL, VMware vExpert, VCP 3/4

  http://blog.vadmin.ru

• SRM and DRS

  Hello

  Limited testing, I can do (I'm a little afraid to push the boat because we don't have a completely separate environment), it looks like the DRS configured for the protected virtual machine is deleted when you run a test of the recovery (I guess that's because the VM placeholder is actually deleted and recreated in VC as part of the process of?).

  My recovery plan says:

  "Success: host"host1.my.network ".

  So is - safe add a rule of DRS once the VM is lit during the execution of a test plan? Will be the fact that the VM is moved SRM to be confused when it comes to complete the test and perform a cleanup to the top?

  I guess that once we have a remote subnet, it is not so much a problem, but while we need to rely on the vSwitch testbubble-1 it would be good to stick all the VMS on the same server during the test.

  You are right. Indeed, DRS rules and DRS by VM settings are not replicated, and even rules and settings that you configure on placeholder VMs have no effect.

  Regarding your question:

  Virtual machines that are connected to internal vSwitch cannot be vMotioned, so the DRS will not move them.

• Requirements VMware HA and DRS.

  On vmware site I was just brushing my knowledge on VMware HA and DRS and found a conflict. Someone can it confirm please.

  One of the requirements for VMware vmotion and DRS turns "the virtual machine configuration file must not reside on a VMFS located on the shared data store. . . "(Ref: http://www.vmware.com/support/vc13/doc/c2vmotionreqs12.html) "

  But VMware HA says one of the requirements as "cluster-enabled VMware HA, all virtual machines and their configuration files to .

  reside on the shared storage (Fibre Channel SAN, iSCSI SAN, or NAS iSCSI SAN), because you have to

  ' be able to power on the virtual machine on any host in the cluster " (Ref: http://www.vmware.com/pdf/vmware_ha_wp.pdf ( )

  What does that mean? Or the constraint of VMware vmotion is wrong? I'm just confused!

  The first link is-old vMotion applies to Virtual Center 1.3 and ESX2.

  "The virtual machine configuration file should not reside on a VMFS located on the shared data store '... This applies to 2 ESX hosts. At the time, the virtual machine configuration (.vmx) file was located locally on the ESX host, run the virtual machine in/home/default vmware...  This file have been moved to the local directory on the target host during vMotion...

  This was changed to ESX3, who, with Virtual Center 2, introduced also HA...

  For HA to work all the VM files must reside on the shared storage. This makes all slender VM files available to other hosts of clusters at all times. (difficult to extract different files from a host of dead).

  / Rubeck

• Understand HA and DRS ESX3.5 and VirtualCenter 2.5

  We have ESX3.5 and VC2.5 with active HA/DRS.  DRS in one of the clusters is in part mode.

  We had a situation yesterday with a virtual machine in the cluster HA/DRS (a single pool of resources).   One of our administrators needed for the replacement of a module faulty memory on one of the 3 hosts in the cluster.  He emigrated manually all virtual machines on this host.  Later, another administrator has a problem with one of the virtual machines in the same cluster and powered virtual machine and turn it back on.  He emigrated virtual machine or somehow the virtual machine migrated to the host where there are no VMs located (one who has been to the module memory, replaced by the administrator earlier).

  Note: because the Group was in part mode, I don't know why the virtual machine would automatically migrate to the host where did exist no VMs.  I think, at best, a recommendation would have emerged instead.  However, the virtual machine somehow back on the host where no. VMs must have existed.

  Later that day, the first administrator SHUTDOWN (he has not put the host in maintenance mode) the host to replace the memory module.  He did not check for if sure there were running VM on the host... After all, he had manually migrated them all out of the host as soon as possible.  From here, things get a little blurry from newspapers and testimonials.  But, from what I could tell, the only VM on the host of the judgment remained on the host computer and has been put off.  This caused an alert and of course cause problems for our community of users which were on the virtual machine.

  From what I've read on HA and DRS, HA uses a "worst case scenario" to determine the function of recovery.  This is based on virtual machines running on the cluster, once one or more of the hosts in the cluster fails.  This "worst case scenario" takes the reserve of CPU PLUS used of any computer running in the cluster virtual and the memory MOST used reserve and applies to all virtual machines running to calculate the total of the cluster resources... If I read that correctly.  So, if the total is thus exceeded some migrating VMs won't be able to power on because they will not reach the requirements of admission control.

  If my interpretation of the reading is correct, then this may explain why the VM on the host shudown not being able to save.  Is this correct?

  y at - it the events listed in the tab the cluster events & task say you something to the effect unable to power on the comments make for violation of the resource constraints?

• HA and drs response on failure VCMS

  HI fields,

  Can any body tell me if my vcms down then my HA and DRS will be worh under active HA/DRS cluster.

  Ravi1987 wrote:

  the host-based authorization will support HA after accident of vc.

  only until the grace period has expired.

• Best practices on UAT HA and DRS

  Dear Guru

  To test HA feature (I have esx 1 and esx2), I'm just saying that the only way to test HA is in the power of one of the esx1 and there are toggled to esx2, assuming that there is no constraint.   Can someone show me what is the best configuration to set on the, for example "allow VM to power it on if viloates contrainst... etc"

  One other scenario-let say I have set up a cluster and activated HA and DRS with resouce pool created.   Assumming If I deseelct DRS, will I be able to retrieve the list resources that I have previously set pool resources assuming that if I select DRS Again?

  Last scenario - let say I have 2 esx server who do not set up to be in a cluster.  If the port of vmotion is enabled on both hosts, am I right to say that I am able to perform a vmotion, even if host 2 did not configure for HA and DRS?

  Enjoy your patienace

  #1 I think that the answer is no. If you disable the DRS, all Resource Pools will be deleted and you will need to re-create if you decided to reactivate the DRS.

  #2-Oui, you can VMotion between two hosts that are not in any cluster, so they are managed by the same VirtualCenter and can see the same data warehouses

  Hope that helps! Please, help me by marking my response as "useful" or "correct", if you feel it is useful!

  -Amit

• HA and DRS will work if Vcenter is down?

  Hi guys,.

  I just wanted to know if HA or DRS will work if my grave vcenter fails for some reason any. If so how did information cluster with itself to restart the machine and adjust the charges.

  Thank you

  Hello

  HA will work, because there is a HA agent that is running on each host, and guests are watching each other and keep the list virtual machines need to be restarted in the event of a failure of the host running. vCenter is used just to (of) enable and configure HA.

  DRS will NOTwork without vCenter, because vMotion recommendations are calculated by the vCenter service, and it also initiates the process of migration.

  -Andreas

• ESX 3.5 HA and DRS - fully automated parameters

  I have a two-node cluster and using DRS DRS In settings under "Fully automated" is a sliding bar to the Threshol "Migration." The default setting is in the middle. I have three questions for this...

  1: in the middle position, how long DRS allows the rampant Server eat before doing a vMotion CPU?

  2: the middle and dragging a tick in 'Aggressive' closest right how long DRS allows rampant Server eat before doing a vMotion CPU?

  3: If you select all of the "Aggressive" way, how long DRS allows the rampant Server eat before doing a vMotion CPU?

  Thank you

  Is not so much how long yet will to DRS for vMotion - the determining factor on the issue to know if DRS vmotion is if the virtual machines do not receive their last resources - so if you do not have a 'run away' vm and on ESX server is able to provide the necessary resources, the virtual machine will stay where it is at-see page 67 of the http://www.vmware.com/pdf/vi3_35/esx_3/r35u2/vi3_35_25_u2_resource_mgmt.pdf

  If you find this or any other answer useful please consider awarding points marking the answer correct or useful