SQL snapshots in physical RDM mode help?

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• 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

• 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.

• SRM and physical RDM Mode

  I have a RDM in physical Mode on a system of FalconStor. FalconStor agents create snapshots consistent Application of Applications.

  It's supported by MRS. RDMs?

  The response must do the exact opposite of your concerns, but I left out some details, so I'll try to clarify this point.

  The signature in question is a part of the logical volume manager, consists of the ID of LUN as seen by the ESXi host and the disk number of the LUN of the data store.  This value is written as metadata in the header of VMFS volume.  In the case of a ROW, there is no VMFS file system, so there is no signature to worry.

  http://www.VMware.com/files/PDF/vmfs_resig.PDF

  See you soon

  Tim Oudin

• 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.

• Request for clarification - physical RDM and vMotion - in case of issue of the review

  Hello

  I'm getting closer to my VCP-410 exam. There are a few things that annoys me on the documents against the experience of real life.  If I have a question in this area, I would like to know what way to go!

  The books that I use for study, as well as the official material state that you can not vMotion invited with a physical training RDM mode, yet a VMware KB 1005241 says the opposite, and I have a production VM with several RDMs physical (for taking snapshots SAN) who fortunately vMotions around my ESXi 4.1 cluster when DRS requires it.

  What is going on?

  Richard

  I'm not aware that there is a restriction for vMotion with RDMs in any version 4.x. In any case, I suggest that read you a few messages from jonhall. He is a developer of technical Certification at VMware and posted some useful certification as facts Re: Will VCP400 review include 4.1 points?.

  André

• Convert a physical compatibility mode raw device mapping to a virtual compatibility mode raw device mapping

  Hello forum,.

  I have a virtual machine that got a RDM in physical Compatibility Mode, so I can't create snapshots of this disc.

  Is there a way to convert this ROW to a virtual Compatibility Mode to allow the creation of the snapshot?

  The client must create a snapshot tomorrow in order to update the database. In case of failure it would be easy to write the snapshot again.

  Hope you understand my problem.

  concerning

  Dennis

  Assuming that the RDM is attached to a single virtual computer, see http://kb.vmware.com/kb/1006599

  Conversely, virtual and physical memory ROW, make sure you have deleted (Clerk) the snapshot before you remove the disk devices to the virtual machine, otherwise you will lose changed data!

  André

• Snapshot with large RDM

  Hello

  I have a virtual machine with 2 virtual disks and 2 RDM. The 2 virtual drives are each about 20-30GB. The RDM is 2 TB each. Can I make a snapshot with just the 2 virtual drives? What is the best way to save before making changes

  other than the backup.

  Thank you

  Mike

  Hello

  If the RDM are in mode physical then instant does not apply to the RDM. If your RDBMS is in virtual mode, then you can make snapshots of the RDM, but to do this, I'll make sure you have PLENTY of space, up to 2 tablespoons available just in case you do something touches all the blocks of the RDM.

  Personally, I keep large RDMs like physics and save them within the virtual machine to an external source. Mitigate the need a lot of disk space.

  Best regards, Edward L. Haletky VMware communities user moderator, VMware vExpert 2009
  "Now available on Rough Cuts: url = http://www.astroarch.com/wiki/index.php/VMware_Virtual_Infrastructure_Security' VMware vSphere (TM) and Virtual Infrastructure Security: ESX security and virtual environment ' [url]
  Also available url = http://www.astroarch.com/wiki/index.php/VMWare_ESX_Server_in_the_Enterprise"VMWare ESX Server in the enterprise" [url]
  [url =http://www.astroarch.com/wiki/index.php/Blog_Roll] SearchVMware Pro [url] | URL = http://www.astroarch.com/blog Blue Gears [url] | URL = http://www.astroarch.com/wiki/index.php/Top_Virtualization_Security_Links Top security virtualization [url] links | URL = http://www.astroarch.com/wiki/index.php/Virtualization_Security_Round_Table_Podcast Virtualization Security Table round Podcast [url]

• Physical RDM virtual RDMs taken in charge in vSphere 6.0

  Anyone know if this process in KB 1006599 works in vSphere 6.0 +?

  VMware KB: Switching between physical and virtual compatibility modes in ESX/ESXi, a mapping of raw data

  We are about to move a bunch of RDM to VMDK, but we need to convert physical to virtual RDMs first (you can live storage migration [to VMDK] with virtual RDM but not medical examinations). The other part of the story is that we are running vSphere 5.5 and are about to upgrade to vSphere 6.0

  KB wrote on October 17, 2014 and I wonder if this is still the method support in vSphere 6.0 and that it has not been updated; or if it is no longer supported, in which case I have to do the migration before the upgrade?

  Thank you

  I see no reason why this will not work in vSphere 6, given that the procedure is simply to remove the physical RDM disks and add them again as RDM virtual disks... In my view, that the KB is just outdated.

• 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

• 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.

• 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

• 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

• The using Excel and Oracle SQL Developer data import - I need help

  Dear friends,
  
  I use Oracle SQL Developer 1.5.1 and I need to import an Excel file into a database table. If I try to import this file into XLS format, fields and headers are properly presented and separated, but if I press the button 'Next', it does nothing - it remains stopped.
  
  I did some research here in this forum and it seems to me that when you try to import a file via the XLS format, Developer SQL has bugs. Is this correct?
  
  If I save the same file in the CSV format and try to import the same file, it moves forward, but SQL Developer is not separating headers and fields correctly. It includes all CSV fields into one - say Column0 and fields 1. TEST; 01/01/2000 under the same Column0.
  
  Save the file in the CSV format is not a problem, by taking a little time. But I don't know how to make Developer SQL import correctly. Could someone help me please? Thanks in advance.
  
  Best regards
  
  Franklin

  This is a known bug in 1.5.1 so use 1.5.0 to import from Excel.
  With respect to the CSV, make sure that you have the right setting in the Preferences - Database - settings of export of genres - delimiter of export custom .

  Have fun
  K.