SRM and physical RDM Mode

Similar Questions

• 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.

• 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

• 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

• 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.

• 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

• 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.

• Move cluster configured with replication SRM and Vsphere

  All,

  We go 2 groups in the near future to achieve a geographical distance between the 2 sites.

  A cluster is equipped with VMware 5.0 replication SRM and vSphere and the other cluster running VMware 5.5 and SRM in combination with replication of vSphere.

  What is the best way to move these clusters, I must stop the replication or interrupt the replication process and are these action to perform on SRM or we need to perform any action on the virtual machine itself?

  I read that a stop is setting the State to not configured including destroy all files in the target directory.

  Does anyone have an experience by physically moving a cluster managed by SRM (and replication of vSphere)

  Any help is welcome

  Thank you

  Gerbert Coolen

  Just pause replication before stop you the VR device on the site target/DR. stop vs break with vSphere replication - VMware vSphere Blog - Articles from VMware

• 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

• 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?

• SRM and VCenter on the same server?

  I was just by reading the documentation and I saw that I need to have vCenter in both places in my SRM deployment. Now I'm on a server. SRM and vCenter co-exist on the same server? Is it still a good idea. I don't have a problem with the purchase of another server if I need to.

  I have a follow-up question on the vCenter licenses. Do I need to purchase a second license for the recovering site vCenter?

  -Patrick

  SRM and VCenter can coexist on the same server.  You will see a performance impact when you test your disaster recovery plan.  I think that a lot of achievements have vCenter and SRM on the same server.  If you do not want to take the risk of a performance hit on your vCenter server you might move RS for its own box, but I advise to use a virtual machine instead of another physical server.

  I think that you need a license of vCenter to each site.  If your recovery site hosts only the DR then you can use your existing licenses for ESX.  If your DR will site also its own VM produciton is then you will need full license.

• Tungsten T3 Hot Sync in Windows 7 Ultimate 64-bit and WIndows XP mode

  I've upgraded to Windows 7 Ultimate 64 bit and now my Palm T3 will not be synchronized.  I downloaded desktop 4.1.4e 6.3 and 4.1.4. I tried all three in both windows 7 and windows XP mode that tells me is a 32-bit o/s but I'm really not sure.  I tried to hot sync in bluetooth in windows 7, as the T3 and laptop connect but he always tells me that the port is used by another program? Does anyone know what I have to do to get it to sync or am I've sentenced to throw my faithful T3 out? Any ideas?

  Hello eaglesfan723 and welcome to the forums of Palm.

  The Tungsten T3 HotSync driver is not 64-bit capable, this is why you can't get the T3 to HotSync.  Please read this thread to learn more about your options with Windows 7.

  Alan G

• Satellite L755 - 16L gives the blue screen and physical memory dump

  Please advice

  I bought my L755 - 16L in the month of August.
  Until last week it went very well.

  Last week I'm going to visit another country he only has the 240V voltage.
  Normally at home, I use 100V power supply for my laptop.
  After my return when I connect top of laptop and the go blue screen screen work and grant discharge mini information of physical memory.

  Usually, I unplug the charger after the judgment.
  The next day if I start the computer, the computer gives the blue screen and physical memory dump.
  If not unplug the charger after stop down and don't use the next day then no problem.
  Please advice what can I do to stop this problem.

  This is the report of errors in Event Viewer.

  "The system has rebooted without judgment properly first. "This error can be caused if the system unresponsive, crashed or unexpected power loss.
  System

  -Supplier

  [Name] Microsoft-Windows-Kernel-Power
  [Guid] {331C3B3A-2005-44C2-AC5E-77220C37D6B4}

  Event ID 41

  Version 2

  Level 1

  Task 63

  Opcode 0

  Keywords 0 x 8000000000000002

  -TimeCreated

  [SystemTime] 2011-11 - 27 T 10: 43:19.248036500Z

  EventRecordID 48763

  Correlation

  -Execution

  [ProcessID] 4
  [ThreadID] 8

  Channel system

  Computer toshiba-TOSH

  -Security

  [User name] S-1-5-18

  -EventData

  BugcheckCode 30
  BugcheckParameter1 0xffffffffc0000005
  BugcheckParameter2 0xfffff80003717ce5
  BugcheckParameter3 0x0
  BugcheckParameter4 0xffffffffffffffff
  Fake SleepInProgress
  PowerButtonTimestamp 0

  Hello

  In general the BSOD is the product of the problem of hardware or software problem. To check if it of software or hardware associated with deliver its necessary to reinstall the OS and check if the BSOD will appear using the new OS preinstalled.
  Of course, it s painful to do that because the recovery procedure would format the HARD drive and therefore the data backup is necessary!

  I don t think that the different input voltage might affect the functionality of the laptop computer because the laptop uses the universal adapter that supports entry 100V-240V.

  BSOD can be caused by faulty memory modules so I think that this test of memory could be useful also