Similar Questions

• Impossible to enable Fault Tolerance on a cluster of ESXi 4.1

  Can anyone offer any suggestions as to what I may have missed in the attempt of activation FT on our VM vcentre?

  The Setup is a cluster of 3 nodes Dell R610 (record identical machine) with an iSCSI SAN, licenses are Enterprise

  VCentre VM runs on this cluster and I would allow to FT.

  Cluster goes on Site 2.5.2 brilliantly, all green ticks and not a red cross. VCentre VM disk has been eager to zero cloned, CD/disks removed, only uses 1 vCPU

  When I try to activate FT I get an error "the VM runs in a monitor mode that is not compatible to the fault tolerance", which is breathtaking in its usefulness

  Any ideas where to go from here? Is there a more detailed log than that presented in the gui VI who can point me in the right direction?

  Stephen Dunne wrote:

  When I try to activate FT I get an error "the VM runs in a monitor mode that is not compatible to the fault tolerance", which is breathtaking in its usefulness

  See KB 1036775 for instructions on changing the mode of monitoring.  For the compatibility of fault tolerance, you want to 'use Intel VT-X/AMD-V for the instruction set virtualization and software for MMU virtualization.'

• Fault tolerant on VMware linked clone Desktop

  Hello

  someone may answer whether it is possible to enable fault tolerance on linked clone VM to a master, through composer.

  Client wants to protect in this way, hundreds of virtual office, I thought about using a channel 10 gigabit for the communication of FT logging, that think u dou everything?

  Thank you very much

  First off it is only recommended to have 4 FT running for each host, so would need you 25 hosts make 100 mV.

  Secondly, I am sure that this is taken care with view.

  Thirdly, also sure FT requires full VMs, clones and unrelated, so your cost of SAN will rocket sky.

  Fourth and this is my favorite, it is exteremly high Windows going down until your host blocks (ESX breaks down).  FT no help even in this situation as if OS1 block him operating system on the other server will crash at the same time.

  FT is designed for mission critical Server VM, not of VDI.

  Gunnar

• VSAN 6.2 'method of fault tolerance' is not available

  Hello

  I installed 4 6, 0u2 ESXi hosts, each equipped with 3 flash devices and a VCVA 6.0U2

  I built the VSAN cluster without activating dedup and compression.

  But when I try to build a raid5 storage strategy, I can't find the parameter of the method of fault tolerance to allow coding of erasure with RAID5,

  I found the after fault tolerance method parameter enabled dedup and compression.

  Is this good?

  It's surprising. I have 60U2 basic vsan cluster where I am able to see 'Method of fault tolerance' the two option of raid 0 and raid 5/6 without activation of compression and deduplication.

  Can you confirm that you have all the flash disk group when you tried this option

  You can logout/login to the webclient service and check if you are able to see (there is a known, documented problem where some of the policies will not be visible unless you disconnect/connect back to the user interface)

  Was it installed or upgraded charges. If you upgrade, you did the upgrade of the disk version. I think that features will not appear if the upgrades of the disc are not (and automatically activating dedup/compression is an upgrade of the disk)

• 6.0 Update 01 vSphere fault tolerance

  Hello everyone,

  I have a problem whene I activate Fault Tolerance on dv01.

  It is the configuration of my physics

  • 2 ESXi 06 update01 build 3073146
  • 1 cluster HA active
    • Ordered admission disabled
    • Disabled DRS
  • 1 with port configuration of vMotion group vDS
  • 1 starndar vSwitch for Fault Tolerance with 2 x Intel® Ethernet Converged Network Adapter X 520 - T2 10 Gbps
  • e

  Dv01 Config

  • 4 vCPU
  • 3 ramdisk stored a first shared data store datastore01 1.35 to:
    • Reset Eager 136 GB Thik provisioning
    • 500 GB Thik provisioning eager to zero
    • 600 GB Thik provisioning eager to zero
  • connected to the port vDS group 1 VMXNet3 network adapter
  • latest VMware tools installed
  • Guest OS Windows Server

  When activated the fault tolerance, I chose the ESXi02 and second datastore02 shared data store 1.28 at: the vmdk and vmx file is created successfully and I free 44Go on the datastore02 of a second.

  But whene I try to turn on this dv01 I have this error

  • vCenter car not power on the secondary VM
  • and whene I look on the event, the error is not "enough space for the secondary virtual machine."

  Can someone help me, please to fix this whene I enabled FT on litle VM02 with 1 thin vdisk, is working but for dv01 is not work

  THX in advance

  Best regards

  Hi DZinit,

  The computation of the space you need on the second data store, you take the file vswp into account. This will generate enough to on and be equal to the size of RAM allocated to the VM.

• Espacio clubbing of fault tolerance

  Hola, tengo una duda con Fault Tolerance y con el espacio en disco Québec debo asignar al ESX, quiero crear una Máquina virtual y quiero asignarle UN disco 50 GB means that Québec asigar 100 GB al ESX tengo para as h. el Fault Tolerance?

  Hello that tal!

  in any case necesitaras el espacio en disco doble para enable FT.

  Al activar FT to crea una Máquina virtual espejo as it requires the same amount of cpu resources y memoria as the mv than estas thing, but in any case storage adicional requieres.

  Saludos

• Fault tolerance switch port guidelines

  I am setting up our lab to test fault tolerance. I plan to use a vSwitch sperate isolated FT and separate FT VLAN. Are there specific indications for siwthc trial paramΦtres I can give to my network group. I want to just make sure that the physical ports are configured before idelly I start testing.

  I didn't know that your plan was to use vSwitch dedicated only for FT traffic and nothing else.

  So, I recommended that you use the "load-driven" (new feature in 4.1) for a better distribution of traffic between natachasery on vswitch but also for network IO contol to partition the link between the different types of traffic. But you are right, as long as the vswitch is dedicated for FT, no need to use it.

  The extent of the Cisco switch port config, if you run the two natachasery to the same switch, you can use etherchannel, although the single link 1 Gbit/s is more than enough for traffic FT. Also, I recommend to enable portfast on ports involved to avoid any interruption when other devices added to the network, triggering the spanning tree protocol recalucations.

  For traffic to

  distribue distributed by grouping network adapters, configure the virtual switch through which the logging

  traffic flow on the road based on IP hash policy. This strategy uses

  source IP address and destination of traffic flows to

  determine the uplink. Pairs of feet between different hosts ESX employ more than

  a pair of source address and destination for logging of FT.

  To use the route depending on the hash IP policy, the physical switch ports must be configured etherchannel mode.

• You can install vCenter as a virtual machine with fault tolerance

  The benefits of having vCenter as a virtual machine are features such as HA and snapshots, is there a problem with having a fault tolerance enabled on a virtual machine that is the vCenter server to manage fault tolerance?

  He couldn't see in the documentation for fault tolerance limits

  Well...

  vCenter lists 2 CPUs as required and FT only works with one...

  -Matt

  VCP, vExpert, Unix Geek

• NEITHER 9852 communication with fault tolerant CAN materials

  Hello

  I have a cRio 9074 and recently bought a module NI 9852 2-port low-speed/fault-tolerant CAN.

  It's my first attempt at network comms in cRio and I realized that none of the devices with that I want to communicate are immune to failures and fault-tolerant physical layer requires different endings to 'normal' high speed MAY (immediately after I broke the seal on the box, of course!)

  Is it possible that I can configure the physical layer for this configuration to work reliably (alebit to)< 125="" kbps="" and="" with="" no="" fault="">

  Kind regards

  Chris

  I'm sorry. The low speed / transceivers and breakdown-tolerant high speed MAY use different communication protocols.

  HS CAN is recessive when CANH and CANL are both to nominally under 2, 5V. It is dominant when CANH is 3.5V and CANL is 1, 5V.

  LS CAN is recessive when CANH is a CHANNEL and 0V to 5V. It is dominant when CANH is 3.6V and CANL is 1.4V.

  You can see that they are almost the same for the dominant, but different for recessive. In addition, the sequence of end between two buses is different. For a HS-bus, you usually resistance 120 ohm between CANH and CANL at both ends of your bus.  A bus of the LS, you have a terminating resistor separate for CANH and CANL (for RTH and RTL).

• Fault tolerance of CAN 'high speed '.

  There is a lot of information on "Low Speed CAN" being "Fault tolérant."  In other words, every time CAN - H or CAN - L is shorted to either on the ground or + 12v, the other non-court-circuit CAN online will continue to work, but with the problems of timing and reduced immunity to noise.  But there is an absolute lack of information on the high-speed CAN fault tolerance (i.e., 125 kb/s speeds).  And if one wants to face that at high speed is as Fault Tolerant as SLOW, why then isn't high speed MAY also deemed "Fault Tolerant"?

  Can someone point me to an ISO document or other official document that specifically speaks to about high-speed CAN and what happens when lines CAN be is shorted to ground or + 12v?  I need a 'official' source of information on this subject, not only his own personal experience or hear - say.

  Thank you.

  ISO 11898-2: 2003 should be a good source for an official response

  http://www.ISO.org/ISO/catalogue_detail.htm?CSNUMBER=33423

• WLC balancing without fault tolerance

  Hello, I need 13 points of service and provide load balancing between all connected AP

  Fault tolerance is not a concern at the present time where my reasoning below.

  I look at by specifying two 4402 controllers with the AP 12 license and configure them both in a single group of mobility, I then manually specify the primary access point controller and distributed accordingly between controllers one on access point two controllers for example 7 and 6 on the other.

  Could I ask if it could it be an acceptable method?

  Concerning

  Hi Mark,

  It is a perfectly acceptable design. If/when fault tolerance becomes a review a 25 model AP can be purchased to provide protection for the two 12 AP WLC Fail-over.

  I hope this helps!

  Rob

• On R2 2012 Windows fault tolerance

  We had a problem with fault tolerance.

  We tried to use a Windows Server 2012 R2 for FT, but when they tried to activate it on the virtual machine; 1 vCPU is allowed.

  It does not have a configuration of 2 or 4 vCPU.

  Probably you have already tried it, but you use the Web Client?

  The FT for more than 1 CPU is something you can do only by using the web client.

  Best regards

• Protect both virtual machines with features of ESXI fault tolerant clustered disk

  Hello world

  I read the following:

  VMware vSphere with operations management: fault tolerance | United States

  The line that interests me is:

  "VMware vSphere® fault tolerance (FT) ensures the continued availability of the applications in the event of server failure by creating an instance of live snapshots of a virtual machine that is always up to date with the first virtual machine. In the event of hardware failure, vSphere FT triggers automatically failover - ensure no interruption of service and prevent data loss. »

  Question:

  FT can protect both virtual machines that share disks in a cluster configuration? (A cluster SQL instance for example)

  FT can protect both virtual machines that share disks in a cluster configuration? (A cluster SQL instance for example)

  No, you can't, because there is an incompatibility with FT.

  Refer to the documentation for all requirements and interoperability: interoperability of fault tolerance

• Certs host message-&gt; vm fault-tolerant

  Salvation communities,.

  I get the following error message configuration of fault tolerance for a virtual machine, we have in our environment

  The configuration of the fault tolerance of the entity {entityName} has a problem: check the host certificates indicator undefined vcenter Server

  Hi Aneetu,

  The box "check certificates of the host" is unchecked in the SSL settings for vCenter Server. You must check this box if it isn't already

• Fault tolerance is possible within a single host?

  Fault tolerance is possible within a single host?

  My requirement is to create two virtual machines within a single host and high availability between these two VMs.

  Please suggest a solution.

  You will not be able to fulfill this requirement through VMware FT, this feature requires a minimum of 2 host.  you'd have to consider third-party solutions to meet your specific needs