Physical RDM virtual RDMs taken in charge in vSphere 6.0

Similar Questions

• convert physical RDM to virtual RDM

  is there any document to change physical RDM to RDM virtual to a virtual machine?

  I think http://kb.vmware.com/kb/1006599 is what you are looking for.

  André

• Convert physical RDM to RDM virtual disc Exchange

  Hi all

  I need to convert a shared disk (SAN LUNS) used by Exchange 2007 SP1 of RDM physical to virtual RDM, I would like to have a confirmation fo this strategy:

  1. Turning off the virtual Exchange Server computer

  2. Remove the disc in the virtual machine configuration vRDM mode (not the disc, of course)

  3. Fix the disc in mode pRDM

  4. Turn on the virtual machine

  Question:

  This stratey is correct?

  could I have a problem with the disc will type?

  Thanks in advance

  Angelo

  Hello.

  That's it – you can document the file mapping according to how many of them you have.  The procedure is also documented in KB 1006599.

  Good luck!

• How to know the difference between RDM physical and virtual

  Hello!

  How can I see if a RDM (RAW device) is physical or virtual?

  I can see it in the vmx file or easily elsewhere?

  I have a few servers running both VMFS and RDM disks inside the virtual machine, and when you use ESX Ranger and make an instant backup, they are ignored to be backed up.

  Grateful for a response

  When you change the settings of the virtual machine and choose the RDM - there will be a radio button selected for the RDM mode, it is - it is really obvious. She'll be selected for the physical or virtual.

• RDM (Raw Device mapping) physical or virtual?

  Hello:

  I have VM and will add a hard drive.  RDM will be, but I was wondering what "Compatibility Mode" choose "physical or virtual?

  It's my production Oracle machine and this new drive will contains about 500 GB of DATA...

  I think it would be nice to use the 'virtual' mode, to make snapshots, but I'm worrying that, for this one big disk, it will take a lot of time and a lot of space... There are other arguments that I should consider?

  Thank you very much.

  Best regards

  olegarr

  olegarr wrote:

  Surya,

  Thank you very much for your help.

  What is any other reason to use Virtual Mode, if I used instant no?

  Thank you

  olegarr

  "design of the SAN and Deployment Guide system.

  Virtual mode for a mapping specifies full virtualization of the mapped device. He

  appears to the operating system exactly the same as a virtual disk in a file

  VMFS volume. The actual physical features are hidden. Virtual mode

  customers who use raw disks of the benefits of VMFS, such as advanced files

  locking for snapshots to streamline development and data protection processes.

  Virtual mode is also more portable across storage than the physical hardware,

  with the same behavior as a virtual disk file.

  Physical mode for a device mapping gross specifies the SCSI virtualization minimum of la

  device mapped, allowing greater flexibility for SAN management software. In

  physical, VMkernel mode all SCSI commands to the device, with a

  exception: the REPORT LUNS command is virtualized, so that VMkernel can isolate the

  volume to the virtual machine owner. Otherwise, all the physical characteristics of the

  underlying hardware are exposed. Physical mode is useful for running the SAN management

  agents or other software SCSI target on the virtual machine. Mode of physics

  also virtual and physical memory allows for cost-effective high availability clustering.

• Problem of cluster Failover MS after physical RDM conversion to VMDK

  Hello

  Last week I had to migrate 7 x 2-nodes virtual MS Failover clusters to a new data center. All clusters have been configured with the configuration of the cabin and all shared disks were in physical RDM mode.

  The target data center does not RDM disks so I had to convert all RDM disks VMDK files and use config before the migration of the IPC.

  I used vmkfstools to convert VMDK eagdrzeroedthick RDM files.

  5 clusters have been migrated successfully, but two cluster got strange question even if the procedure for all groups was the same.

  So in two groups, I have a problem where the second node in the cluster can not put online some of the shared disks. The first nodes in the clusters have no problem with the disks/SSP.

  But when I try to failover of all services, the second node may not bring online disc 1 or 2 shared, even if she can put the other shared disks online.

  VMKernel.log is not errors or warnings. I checked the configuration of virtual machines and everything seems OK.

  Any ideas what I could check?

  Just in case anyone else is facing the same problem.

  I could not find the root cause of the problem, even if it's without a doubt the conversion that triggered the problem. However, we found quite a simple solution - added new shared VMDK files, copied the files over and replaced the defective discs.

• Limitations of architecture with replication of VM with physical RDM Mode

  What are the Limitations of Architecture with replication of VM connected with physical RDM Mode in vsphere replication. Why VMware does not support this?

  I will add some colors to the response of GS. A particular interest with regard to the physical path RDM (pRDM) works, summarize these two chips of the article:

  • Physical mode specifies minimal virtualization SCSI of the mapped device, allowing greater flexibility for SAN management software.
  • VMkernel passes all SCSI commands to the device, with one exception - the REPORT LUNS command is virtualized, so that the VMkernel can isolate the LUN to the virtual machine owner. Otherwise, all the physical characteristics of the underlying hardware are exposed.

  There is an integrated in vSphere vSphere (RV) replication agent that has several functions. In particular, she keeps track of the Scriptures to the virtual machine. When a replication cycle occurs, the changed data is replicated to the target location. The VR agent should be able to 'see' These Scriptures to follow. Given that the physical mode all SCSI commands directly to the device, the VR agent is unable to follow these changes for replication.

• PvSCSI adapter for physical RDM expandable disk using?

  Hi all

  Can anyone here please indicate if the scenario below is supported for RDM physical disk with the extensible feature in the future?

  R2 Windows Server 2012

  Physical RDM: NTFS table partition GUID 2 TB which can be expandable to 12 TB + in the future

  SCSI controller: pvSCSI SCSI 1:1

  Because the KB article: VMware KB: configuration of disks to use VMware Paravirtual (PVSCSI) SCSI adapters says:

  • Do not use the PVSCSI on a virtual machine running Windows with split volumes. Data may become inaccessible to the guest operating system.

  
  

  Thank you

  If you use physical (amp) RDM, why would you use volumes split inside the guest?  You present a lun 12 to large or smaller and covering inside the guest OS?

  Depending on the version of vSphere you use, this article might help you: how much storage maybe I present to a Virtual Machine? VMware vSphere Blog - VMware Blogs

• Independent drive persistent and physical RDM Mode

  Hi all

  Need your opinion on taking snapshot backup in option of the few VMs via NBU 7.6

  We intend to resume via auto-created snapshot NBU, but is that all VM have persistent independent drive along with some VMs have physical RDM Mode.

  I am aware that the physical RDM mode supports not instant, but is independent of the persistent drive?

  Thank you and best regards,

  Shrikant Germain

  The IIRC snapshots are used when cloning a virtual machine under tension.

  André

• Do > 2 TB physical RDM NEED Directpath IO?

  I've been struggling with this for over a week now so I could really use some advice.

  5.1 ESXi

  I need to install three hard drives 3 to and give them direct access to a virtual computer running FreeNAS (or other) for a ZFS ZRAID configuration to store data.

  From my research, it looks like a physical RDM is my best solution. I want that the BONES of the VM to exert direct and complete control to readers with title bit VM intervention as possible. Reason being, I want readers to be able to be exchanged in a physical server to spare if necessary to recover the data.

  I am able to do a physical RDM using the command line and I'm able to add them in a virtual machine. Once attached, they do not work in the operating system. The operating system can see the disks, but may not use it.

  I am unable to make the virtual RDM because obviously, readers are more 2 TB - 512 k.

  Where can I activate? Do I NEED to have material supporting Directpath IO to use the large RDM? I can't confirm this, but it's the only thing else that I can think of. New versions of ESXi should support up to 64 TB with the RDM...

  My hardware does not support Directpath IO so I can't spend it just a map of entire storage with the disks attached. But I can buy a new motherboard supporting the pull-out decision if that's the answer. Also, for the physics of the RDM will I need to pass to the virtual machine a whole controller (card) or can I just use the physical RDM as on the use of the SATA connectors on board?

  Any advice would be greatly appreciated. ;-)

  What type of storage do you use? ISCSI or FC?

  You certainly don't need direct i/o path for a raw device mapping physics > 2 TB (-512). So that you can safe money

  What's that it is mentioned in vmkernel.log when you join the RDM?

• How to get the number of LUN to physical RDM assigned to VM?

  Hi people,

  Is it possible to get the LUN ID or number of a RDM physical disk attached to a virtual from Windows using PowerCLI machine?

  Thank you.

  Hi Albert,

  the first PowerCLI script will give the LUN ID or the number of physical RDM disks attached to a virtual machine for ESX 3.5 servers:

  Get-VM | `
  Get-HardDisk | `
  Where-Object {$_.DiskType -eq "RawPhysical"} | `
  Select-Object -Property @{N="VM";E={$_.Parent}},
    @{N="HardDisk";E={$_.Name}},
    @{N="Lun";E={$_.ScsiCanonicalName.Split(":")[-1]}}
  

  The second script PowerCLI will give you the LUN ID or number of a RDM physical disk attached to a virtual machine for 4 ESX servers:

  Get-VM | `
  Get-HardDisk | `
  Where-Object {$_.DiskType -eq "RawPhysical"} | `
  Select-Object -Property @{N="VM";E={$_.Parent}},
    @{N="HardDisk";E={$_.Name}},
    @{N="Lun";E={
      $HardDisk = $_
      $lun = Get-VMHost -VM $_.Parent | `
        Get-ScsiLun -LunType Disk | `
        Where-Object {$_.CanonicalName -eq $HardDisk.ScsiCanonicalName}
      [int](Select-String ":L(?\d+)$" `
          -InputObject $lun.RuntimeName).Matches[0].Groups['lunID'].Value
    }}
  

  Thanks to Luke for his blog post the making of a New VIProperty called Monday who gave me the idea for the regular expression.

  Best regards, Robert

  Post edited by: RvdNieuwendijk

• SQL snapshots in physical RDM mode help?

  If a virtual machine with a drive located on a RDM in physical mode, doing things like SQL snapshots work?

  There is a discussion where some people wondered if them soon be virtualized servers SQL must use internal iSCSI client to connect directly to a SAN logical unit number or if you are using a physical RDM mode. They were not sure if features like SQL snapshots work.

  Operating system doesn't "know" what type of disc it uses (virtual physical RDM, RDM virtual disk), so that all the functions as snapshots made within the OS itself will work the same. It's only the instant VMware that has no effect on a physical RDM.

  André

• SLES + OCFS2 shared physical RDM

  I intend to install a cluster node Linux SLES OCFS2 using a RDM in physical mode 3.

  I did this once before with both VM and set bus SCSI physical Division on the 1st virtual machine, and then for the 2nd server selected the 1st mapping VMDK file. This gave the desired effect to allow the physical RDM to be shared, but meant that vMotion was not possible for one of these two servers.

  What I intend to do this time is to configure all the same VM 3, everyone has the physical RDM attached without bus sharing together on the SCSI bus.  This is possible, I think that, by setting config.vpxd.filter.rdmFilter to false before you add the ROW to each virtual machine. Then the anti-affinites rules will be set to stop 3 VM running on the same host. This should allow the sharing of the RDM OCFS2 and vMotion of virtual machines.

  I think it will work. Can someone tell me if there are problems with it? Is this a supported configuration?

  Thank you

  Neil.

  More than 2 nodes is not supported by VMware. OCFS2 supports more than two nodes. It has been popular with Oracle RAC, until everyone has opted for the DSO. While VMware does exactly what the no-MSCS Clustering support or requirements are. Most of the things are based on the limitations of MSCS clusters in VMware. I am about to implement a number of clusters for a customer with OCFS2, but will be limited to two nodes. We were just will you use FT for our high availability needs, but with the guest operating system as a single point of failure have failed to meet application SLAS.

• VMWare ESXi 5.5 - VMotion & HA supported MDM physical or virtual

  Hello

  Hope someone can shed some light on the survey below:

  1. can you VMWare ESXI 5.5 HA and Vmotion supported with vmdk files located in front of multiple vmfs datastore 3/5? I have problems with VMotion or HA?
  
  2. can you VMWare ESXI 5.5 HA and Vmotion (not storage Vmotion) support with a VM scenario below:

  3 three nodes with iSCSI SAN storage

  VM1
  -Drive C-> vmfs Datastore1
  -Drive D-> RDM (is this support on a physical or virtual compatibility mode)
  

  VM2

  -Drive C-> vmfs Datastore 1

  -Drive D-> vmfs Datasore 2

  
  IV ' e seen these link below no mention if need pyshical or virtual mode
  http://KB.VMware.com/selfservice/microsites/search.do?language=en_US & cmd = displayKC & externalId = 1005241
  https://pubs.VMware.com/vSphere-55/index.jsp?topic=%2Fcom.VMware.vSphere.storage.doc%2FGUID-D9B143D8-9F93-41D1-A32F-9FF4DE4CDF14.html
  
  3. can you multiple access by 5.5 ESXi host the same data store (located on a San) vmfs using the free version of ESXi 5.5?
  Can I use this in a production environment? I have seen some companies test this on a non-production environment. Technically, it works.
  
  Thank you
  Paul

  Welcome to the community-

  (1) as long as the DRS HA cluster hosts see data even warehouses there will be no problem

  (2) once more, also longer than the nose can see data warehouses including the LUNS as the RDM it home should be without issue.

  (3) Yes multiple instances of the free version of ESXi can access LUNS shared - Yes it can be used in a production environment, but remember you can not handle the free hypervisor with vCenter.

• After installation of Medal of Honor in Windows 7, get the error DXGI_ERROR_UNSUPPORTED (not taken into "charge.").

  Original title: NEED HELP PLEASE

  Hello

  I installed the game Medal of Honor - Warfighter on my desktop pc with Intel(r) G41 Express Chipset. I have 2 GB DDR3 RAM & P4 Dual Core E5400 2.70 GHz CPU. I received the error message: failed to create D3D Device of at least 10.0 on adapter "Intel(r) G41 Express Chipset 'chauffeur 'Unknown'. The error is DXGI_ERROR_UNSUPPORTED (not taken into "charge."). I don't have any video card.

  I tried separately installation of DirectX 11, but the problem is not resolved. I use Windows 7 Ultimate x 86

  Kindly help me.

  Castelbajac

  ReadyBoost was intended to give a boost to the systems where only 1 GB has been installed and some of the RAM was shared with the video.

  This is no replacement for actual physical RAM, which is what your system needs for the game...