Exchange on vSphere

Similar Questions

• In-Guest iSCSI for Exchange 2010

  Hi, we just built and are ready to go into production with Exchange 2010 using LUNS in guest through the card Microsoft iSCSI initiator iSCSI separate network for iSCSI etc. Load tested with JetStress and everything seems fine. We just found out as snapshots are not supported with iSCSI in guest so we are concerned that the other things work or be taken in charge or another, i.e. of vmotion. So, does anyone know if we lose any other characteristic, and we need to change our minds and using ESX iSCSI? I read pieces on being comparable, that we stuck with a guest performance because that's what we know with our existing Exchange 2007 environment (physical). If we must change, is it simple?

  Hey everyone who is following this thread or found via Google.  It is important to understand what is and is not supported when you are running Exchange on a virtual machine.

  To be absolutely clear, combining Exchange 2010 DAG and migration technologies such as vMotion technology is supported.  You must ensure that you are running at least Exchange 2010 SP1 as well as a version of vSphere that sits on the server virtualization Validation program.

  I think that the link was already posted, but here is the final link:

  http://blogs.technet.com/b/Exchange/archive/2011/05/16/announcing-enhanced-hardware-virtualization-support-for-Exchange-2010.aspx

  More specifically, since the post above (in bold italics):

  Combining Exchange 2010 high availability solutions (database availability groups (DAG)) with hypervisor clustering high availability and migration solutions that will be moving or automatically failover servers for mailboxes that are members of a DAG between clustered root servers, is now supported.

  Improved, that we did in Exchange Server 2010 SP1, with more comprehensive tests of Exchange 2010 in an environment that is virtualized, we are pleased to offer this additional deployment flexibility to our customers. Management of updated support applies to any provider of hardware virtualization that participate in the Windows Server Virtualization Validation Program (SVVP).

  Logiboy123, can you provide any documents to support the statement that Microsoft does not support this configuration?  The above quotes are directly from Microsoft and are very clear that they support not only the migration of Microsoft technology, but also similar to any other provider of the hypervisor technology, provided that they are in the SVVP program.

  Since vSphere is part of the SVVP, Microsoft has extended support for the technologies of migration such as vMotion, in addition to their own Live Migration.  Of course, simply support something does not automatically make it works.  If you want knots vMotion DAG works correctly, you might have settings described in this blog post extended the cluster heartbeat timeout (also a fully supported configuration change):

  http://www.thelowercasew.com/vSphere-and-Exchange-Admins-can-live-in-harmony-Microsoft-finally-supports-HA-and-VMotion

  To answer the original question in this post, using the Protocol in-guest iSCSI is supported and with vMotion in this configuration is supported as well.  You're not really 'give up whatever it is' using this configuration well so if it meets your needs, I would stick with it.  I prefer generally VMFS just because of the flexibility it offers, but all the world has different requirements and I have absolutely no problem with guest iSCSI if your organization requires it.

  Do not forget that whatever configuration, snapshots of virtual machine are not supported for Exchange. Here is another post which goes into detail on it and cover the declaration of support for Microsoft Exchange 2010 snapshots and machine virtual: http://www.thelowercasew.com/virtual-machine-snapshots-and-tier-1-apps-not-always-supported

  So in general, I would say that provided you are running the correct versions of Exchange and vSphere must then take full advantage of your configuration to use features like vMotion and HA without problem.  If you adjust your settings accordingly cluster heartbeat timeout, you should have no problem using vMotion with your knots of DAG.

  Matt

  http://www.thelowercasew.com

• vSphere 6 and Exchange 2010

  Hi all

  We want to improve our ESXis where are hosted Exchange 2010 VMs. We are planning to upgrade to VMware ESXi 6.0 U1a.

  Do you know if this version of vSphere is supported by Microsoft? Servers OS of Exchange is Windows Server 2012 Standard.

  Thank you

  you are welocme

  Yes, you are right... it is not supported YET... but take in mind that 6.0 U1 was released last month... so you have to wait a few days/weeks until they test the release.

  but it is quite clear that they will also add u1 to list supported... then you can go ahead with the update... don't you worry that

• vSphere and Microsoft Exchange 2010

  Hello anyone know of a guide of best practices for the configuration of Exchange 2010 on vSphere.  I think mainly to Cluster Dag requriements regarding HA, DRS and FT

  If you have found this device or any other answer useful please consider useful or correct buttons using attribute points

  Tom Howarth VCP / vExpert

  VMware communities user moderator

  Blog: www.planetvm.net

  Author of the contribution on "[VMware vSphere and Virtual Infrastructure Security: securing ESX and virtual environment | ]. [ http://www.amazon.co.uk/VMware-VSphere-Virtual-Infrastructure-Security/dp/0137158009/ref=sr_1_1?ie=UTF8 & s = books & qid = 1256146240 & sr = 1-1] & rdquo; .

  Author of the contribution on "[VCP VMware Certified Professional on VSphere 4 Study Guide: Exam VCP-410 | ]. [ http://www.amazon.co.uk/VMware-Certified-Professional-VSphere-Study/dp/0470569611] ».

  Tom if you can wait a week or two there were also a few sessions at VMworld on this specific topic.  I would like to keep an eye on for them when they go out in public for more information as well.

  -Kyle

  «"RParker wrote: I guess I was mistaken, everything CAN be virtualized"»

• Specifications for a new installation of Foglight a GREAT environment vSphere

  Hello all-

  New Foglight for Enterprise Virtualization and we try to implement a test to see how it performs in an environment of our size.

  We have worked with the representatives of Dell/Quest/Foglight but so far have not been able to get very far in the correctly "tweaking" for usable performance. so I'm tender hand to everyone here for some thoughts.

  We currently have a large enough vCenter with over 7400 VMs, 20 + data centers, hosts 450ish, across the country.  It's a 5.1Update1 environment and the vCenter and related services (VC, SQL, VUM, SSO, WebClient) are all Windows 2008R2 machines virtual on a cluster dedicated to ESXi 2 nodes and all virtual machines to vSphere have all the power in the world to run it.  vSphere itself works well.

  For our Foglight install (the last FfVE v7) consistes of 3 virtual machines.  A FMS server, a SQL Server (2008R2 - dedicated not shared SQL DBs w / any other) and an Agent of vSphere server.  We threw all kinds of resources to this as well - but performance is so bad that it is simply not usable and we have not even present all 7 k + VMs... It is only arount k 5 of them.

  All are Windows 2008R2-

  VSphere VM Agent has been configured for 4 vCPUs and 12 GB of RAM.  It is on the same network segment and same physical host vCenter so it can work on the same vSwitch and did not have excessive network traffic between the two.  The disk is SAN IBM XIV with 8 GB HBAS.

  The SQL VM is 6 vCPUs and 12 GB of RAM.  Another host, network different segmant and different SAN storage IBM XIV.  This SQL Server computer runs ONLY the DB FL.  The DB is locked to 8 GB of RAM, original disc it size 250 GB and there are a lot of drive.  The vDisk is THICK put into service and latency in the standards.

  The FMS server is on a host dedicated - no other guests running on it (for good troubleshooting purposes has not made difference).  He has all the army all processors to himself, has 32 GB of RAM, the virtual machine's memory is all locked/reserved.

  For all three computers virtual, the vCPUs are not competing, time LOANS are low, there is no memory sharing, balooning, or Exchange and the disks are thick with low latency.

  The FMV of the Agent from the server vSphere is set to 8GB min/max.

  The FMS server JVM is located at 12 GB min/max.

  So you see, we gave er everthing she has, but it is VERY VERY VERY SLOW.  To the point, it is completely unusable.

  As a comparison - VMware vCenter Operations manager is a VAPP 2 - VM, has access to the same vSphere with the same objects and it works perfectly fine and smooth.

  My gut tells me there is something not right in the JVM, but I don't know enough.

  Help, please!

  If you have time next week, we can discuss?  I've worked with a lot of large environments and I would like to see the details of what's going on before I comment in too much detail to lead you down a path or another.

• VM Exchange or SQL with instant HIT Kit and VSM

  Hello

  I wonder if someone could explain a bit more on integration of VSM and HIT kit without scenario ISCSI based comments like below...

  Exchange and SQL servers are run under vm on Vcenter/Vsphere 5.5 environment, and there is no comments ISCSI connection which means that all disks are vmdk.

  So, based on this scenario, is it possible to use the HIT kit to restore data (granular level) even if the snapshot has been taken by VSM data store option?

  Thanks in advance...

  Hello

  No, you cannot use HIT / ME in this case.   The HIT kit requires the MS ISCSI initiator to work properly. For creation and restoration of snapshots.

  VSM is against the whole VMFS data store.  First VCS invites you to create snapshots, the VMware VMDK VSM will require instant volume EQL.

  VSM don't offer currently not at the file level restore.  However, you can do it manually.

  Bring the EQL data store snapshot online.

  Connect to a node ESXi and add this snapshot of the data store to that node.

  (With storage add, after a new analysis of the ESXi iSCSI initiator)

  It renames the snapshot of the data store for: "snapshot - XXXXXX -

  You can do a few things here.  Copy the original entire virtual disk of the snapshot to the data store. Or more generally to add the file VMDK from the snapshot on another virtual computer as another drive.

  When you start the virtual computer, it will appear as a new drive letter.  Then, you can copy individual files of this copy.

  An important thing to note.  When you use a snapshot, you will use instant reserve.  So make sure if you attach not already 100% instant reserve that increase you it as much as possible.  If you consume the reserve of the snapshot, you work with is removed.  According to which EQL FW version, you can borrow from the free space.  This is especially true if you replace a VMDK set.   That will use up to the reserve very quickly...

  When you are finished with the EQL snapshot, make sure first that no VMs still use it.  Then put the instant EQL offline in EQL GUI.  And then do a rescan the iSCSI initiator in ESXi GUI.  This will cleanly remove the volume from the node ESXi.  Otherwise, he might try constantly to reconnect to the EQL snapshot, generating errors repeated in the EQL GUI and alerts if you have set up.

  Kind regards

• Exchange 2010 on EqualLogic - VMFS volume?

  Hello world

  I'm just in the planning stages of a deployment of Exchange 2010 (updated 03). Although I attended a good amount of EQL webinars on exchange and read probably each best practice doc out there, I can't get a clear answer on a pretty important point - how best to organize storage.  It is a relatively small exchange deployment (500 mailboxes, 1 PS4000XV, 2 Dell R910 on vSphere 5).

  I can't find a consensus on how to organize storage. Ce_que I speak to you is either A) make data changes a simple disk VMDK (in a VMFS on the EQL volume), or B) doing the volume of exchange data sit directly on the SAN (i.e. RDM or iSCSI Target, so that data exchange is not inside VMFS).

  Everything I read seems to say that the ASM / me tools to be able to speak the volume directly on the SAN, making the B option to go with. I know there could be advantages and disadvantages at the same time, so maybe an option isn't a slam dunk, but there opinions out there on the issue? Best practices?

  There is no 'perfect' here answer.  There is what works best for your situation.

  If you want to take advantage of the DSO / offers ME and most do, then you must use invited inside the OS MS iSCSI initiator to connect to volumes of data and logs.   VMFS or RDM does not work

  .  A feature key with Exchange integration is the exchange administrator may without the GUI EQL access, create a recovery storage group and restore individual mailboxes on the fly from a snapshot.  It is run entirely from the ASM / ME GUI.

  You can also schedule consistent snapshots to check with the ESEUTIL command on another node, thus freeing the Exchange Server.   Here's just a sample of the DSO / ME features.

  In addition, for optimal performance, you would have different cards for VMware iSCSI and iSCSI comments traffic.

  Kind regards

  -don

• Design of dashboard Exchange

  Hello world

  I am very new to VROPs and I have a brand new 6.2 VROPS install which I linked in my vCenter environment.  One of the things I want to do with this environment is to allow our administrators Exchange to connect to VROPs and see ONLY the exchange servers to be able to shoot precisely related performance statistics.

  Currently if I give them permissions to log in to see all the same default dashboards that other users see (for example: recommendations, vSphere vSphere VM disk and network, vSphere, data warehouses, risk capacity, etc.)

  What is the logical method for creating a dashboard customized for exchange users only?  I only grant permissions to the property that I want to allow administrators Exchange display?  For example, machines virtual Exchange, Exchange clusters, hosts, disks, etc. etc. etc.?

  Thank you.

  Environment ---->custom groups--->New Group (Group to choose a Type = function) was from there, you can complete manually or if your Exchange servers are labeled in VSphere you can dynamically create members of the Group (which is really best) using the VSphere tag.

• flow of traffic inside and off-host vSphere

  Our security team dislikes the vShield solution, we have in place, and they want to retire-

  Now, I need to understand exactly where the packages are forced out the virtual switch until the physical switch where our security can inspect the packages with its firewall of choice.

  Here's what I know:

  (1) the packets intended for one VLAN different will leave the port of the host group------vswitch via the uplink to the switch upstream vmnic - this allows deep packet inspection

  (2) I can create ports with different VLAN ID groups that rely on the same subnet addressing

  BUT - packages of VMS in port VLAN separate groups which are essentially on the same subnet actually leave the vswitch via the uplink to the physical switch?

  or the vswitch will recognize that the package is on the same subnet, regardless of the different VLAN ID and keep it in the host vswitch?

  Also, if I had to create multiple groups of ports with the same VLAN ID, moving between these port groups automatically packages would send to the switch upstream simply because they are in groups of different ports or will stay within the host vSwitch as the VLAN ID is the same?

  Thanks for help in advance!

  Hello

  Your security team should seriously rethink their thoughts all around security of virtualization. What they offer is a situation "Hairpin", which will treble the bandwidth required to operate a virtual environment. It also does not correctly account internal segmentation of virtual hosts. They need a solution that extends from their physical firewall solution in the virtual environment. I have been asked many times and frankly by using a physical Firewall in a virtual environment is just a horrible solution. It will not work in the cloud and it work well in a virtual environment, I know.

  I have layers of virtual switches within my environment and there is absolutely no physical firewall that can match what I do without resorting to tools that are not actually of security tools. VLANs are these tools actually. Instead I suggest using internal segmentation firewall or virtual firewall. Almost every manufacturer firewall is a virtual version of their firewall and I would go in that direction.

  Please check your security team a usable Secure Hybrid Cloud reference Architecture that extends from firewalls in virtual and cloud environments: Secure Hybrid Cloud Reference Architecture

  In response to your ideas:

  In general the different VLANS can leave the uplink or go to the following top switch, etc. Same VLAN ID implies the vswitch will route between these exchanges. So no, they wouldn't let me. So why you really need to integrate virtual firewalls in your environment.

  This isn't a construction of distributed firewall but place the edges between each of your security zones. There are 3 types of firewall distributed as well.

  The Ark of ref is a little dated, but the concepts have not changed. It is updated even as I write this.

  Let me know if you have any other questions.

  Best regards
  Edward L. Haletky
  VMware communities user moderator, VMware vExpert 2009-2015

  Author of the books ' VMWare ESX and ESXi in the business: Planning Server Virtualization Deployment, Copyright 2011 Pearson Education. ' Of VMware VSphere and Virtual Infrastructure Security: securing the virtual environment ', Copyright 2009 Pearson Education.

  Virtualization and Cloud Security Analyst: The Practice of virtualization, LLC - vSphere Upgrade Saga - virtualization security Table round Podcast

• Installation of POS 6 Exchange 2013 plugin - current user is not a domain administrator

  I installed Exchange SP1 2013 (current patch level).  I'm tying to install the plug-in by vmware-data-protection-administration-guide-60.pdf, Exchange age 169.  VMware VDP Exchange Backup tool for configuring the user start and tells me "the current user is not a domain administrator" (see screenshot).  I am connected to the machine using credentials a domain administrator, not the local computer.  The Exchange sever, Storage group, Mailbox store drop-down lists are empty, apparently a problem of authority.

  The talks on creating a VDPBackupUser account manually KB creating a VMware vSphere backup user account Data Protection (WTP) Exchange plugin with Advanced VDP (2073168).  Before I trot in this way, I thought I'd see if there is anything obvious or that I ran out of base.

  Problem solved.  Setup VMware VDP backup user tool must be "Run as administrator...". "I must have missed that in the doc

  In addition, notes in the log (the configuration tool dialog box) that the created account VMwareVDPBackUser (mailbox) must be connected to (at least once) to complete the configuration.  I use OWA to open a session.

  The VMware install document talks about the user VDPBackupUser.  The user created by this process is VMwareVDPBackupUser.

• Can this load balance and HA cluster with vsphere?

  Hello community!

  Really new on this type of subject, so forgive me if IAM iam do or say something wrong. I'm here to try to understand better this amazing tool so I apreciate your time and knowlodge!
  Im trying to create a failover and balancing cluster with Vsphere, the goal is try to install an MSSQL DB server where the customer can access more quickly and do not have downtime when a node is down.

  I read a lot but still I can't have a full understand abt, so if anyone tries to explain something, please be patient and explain with precision.

  All doing wrong if you really work at home as a LABORATORY, and I can do it, hurt trying to use it to get a job because I don't have and I really need one soon!
  Here is my diagram is possible?

  

  Well ill to explain it, I have clients that will send a work for my DB load process, which will affect on MSSQL Server installed on the 12 TB logical drive created from the union of all methods virtual storage. Each virtual storage is just a virtual disk created on a virtual machine that is hosted on the physical server (node).

  So I have 4 physical server which have 1 VM each with 3 TB of virtual disk, the goal is the customer can send the process of workload on 4 nodes to have a quicker response, and if a single node fails for any reason, the other node can operate withow problem.

  physical server Medley: don't know yet if I have to use one or install VMWARE directly.

  Sagna VM: Windows Server 2008 (don't know if necessary or if I can just install SQL Server directly)

  MSSQL Server VM: 2008 Enterprise (still don't know if I have to use this one)

  Well I can't think right now on the other details, but if you tell me ill be happy to write it.

  Sorry if my writing or semantics is false but English is not my first language.

  Really thanks to get to this point and share your knowlodge!

  Best regards, josh of Argentina!

  Josh, please correct me if I'm wrong, you have 4 knots of MS - SQL, and you need to read/write at the same time in a shared database of 12 to.

  If this is the case check the following documents:

  VMware KB: MSCS support improvements in vSphere 5.5

  http://KB.VMware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalID=1004617

  http://KB.VMware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalID=1034165

  Clustering using VMDK sharing between virtual machines

  http://KB.VMware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalID=2009226

  https://www.VMware.com/PDF/vsphere5/R55/vSphere-55-configuration-maximums.PDF

  http://KB.VMware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalID=2003813

  The above covers the part of the diagram which includes 4 nodes SQL and the shared database, the other part of the client to the SQL nodes that segments the loads on the nodes, I think you should see Microsoft options.

  I found a few relevant links below:

  https://ask.SQLServerCentral.com/questions/51824/cluster-with-more-than-2-nodes.htm l

  SQL server 2008 r2: how? Several active node SQL Cluster (not) - database to stack Exchange administrators

• POS 6.0 DAG 2013 Exchange fails continuously

  Thanks for reading. To say I'm a little nervous that here would be an understatement. I worked on getting this thing deployed since Saturday. Whenever there is consistent failure. I have taken from the configuration and started from scratch, he continually fails.

  The last error I have is below.

  2015-06-16 14:53:18 Exchange_DAG - 1434491732837 WARNING < 0000 >: exit status no no [ctl_spawn] Workorder "Exchange_DAG-1434491732837" ' 536870919 code: various error '

  I found the article to support, but it does nothing. VMware KB: backups Exchange DAG fails in VMware vSphere Data Protection

  The ports are open on the MS Server 2008 R2 servers. I have zero problem with this. There is nothing between the two servers that can stop them except the ESXi host. It is on the same subnet too so it's not like there issues play with it. One thing I notice, for any reason, the Cluster DAG that is created seems to be losing the IP address that has been provided, I do not understand how it is possible. When I go back to check the configuration, it shows the address IP is 0.0.0.0. but when I go through some of the files I see 10.10.20.0. I'd be 10.10.20.159. Now, the really good part is that if I restart the POS device, it stop trying to save completely. It's like he forgets the whole thing never existed. This is beyond frustrating...

  If it has never worked before, I would start by confirming the exchange of VDP requirements and Setup with the VDP Administrator's guide.

  http://pubs.VMware.com/vSphere-60/topic/com.VMware.ICbase/PDF/VMware-data-protection-Administration-Guide-60.PDF

  -If this OPTION is enabled, confirm that you have run the msiexec /i command during installation - Page 154

  -East .net framework 4 is installed? -page 165

  -I run the user setup utility backup Exchange and confirm the permissions are correct and the services run under the appropriate user. -page 168

  Other things to look at that are not clearly documented in the VDP Administrator's guide

  -I believe that POS 6.0 requires Exchange 2013 CU3 or newer

  -Try backup 1 node in the DAG.  You don't have to back up a DAG by using the backup DAG Federated configuration.  If you select 1 server to the DAG, as if it were a single server, it will still work and be easier to troubleshoot.

  Good luck.  Alternatively, you can try to open a ticket with the help of VMWare.

• Replication of VSphere marked as non-active

  Dear all,

  I configured the SRM connection between two sites. I have them paired with success and set up the connection to VR.

  Problem is when I put a replication for certain one VM, once the wizard is finished, vsphere replication monitor displays status - not Active. The events and tasks of the VM, I found the following warning:

  No connection to the server of VR: do not answer

  I am able to ping/telnet port 80 two of these machines of this virtual machine replication.

  Could you please help me solve this problem.

  Thank you

  Aleksandar Aleksandrov

  Hi again,

  OK, here's the problem.

  Basically when pair you it with DR site both VR servers are to exchange information between them for example VRS server target. So in this case you end up with the following situation:

  (1) VRS on the DR site has different IP address than the Production site

  (2) production site ESXi tries to connect to VRS IP at the Dr site not directly through your port transfer machine

  (3) what makes the replication to go to idle state

  Please check the messages in the vmkernel.log file located in your source ESXi machine. Here's a useful KB KB VMware: VMware vSphere troubleshooting replication problems that might be useful.

  Thank you

  Dzhem

• with vSphere replication to replicate vCenter Server in a VM

  Hi guys,.

  I am trying to find some info on this. I currently have vCenter 5.5 running on a Windows 2008 R2 VM server. I was wondering can I use replication to replicate it in some shared storage for backup purposes, and if I had to lose it could I recover and this and be good to go? He runs a database integrated. or is it as AD/SQL/Exchange and in general you shouldn't use replication or something of the sort for them.

  Also, if I have reproduced on the recovering site, I could pick it up and re protect him using MRS. and migrate to the main site once I had everything back up and restart? Is there a difference if I ran the vCenter device instead of the version of Windows inside a virtual machine?

  My apologies if this has been answered before that somewhere, it just went through my mind randomly and Googling gives me really a lot of results, so if its been answered somewhere, please point me in that direction.

  Hello

  vSphere replication requires vCenter to function, you cannot use VR to protect it that you wouldn't have a way to recover, unless it has been replicated on a different vCenter (whereby it might be recovered, but only inside the other vCenter) or if it has been managed by a different vCenter.

  If you are in the second option, where you have a vCenter management appliance RV, and you have an another vCenter, so yes, you can use RS in this model to protect and auto restore your internal vCenter.

  No difference in the functionality between vCA and windows version of vCenter.

  As for your statement: "or is it as AD/SQL/Exchange and in general you shouldn't use replication or something of the sort for them."

  -vSphere replication supports VSS suspension

  -I'm Okay I wouldn't recommend AD replication (SQL and Exchange or if you can use the built in replication at the application level)

  -If you can not however, most modern applications work very well in a consistent state of crash (VR normal replication) and the rest works with VSS

  Hope that answers your questions

• vSphere 5.5 HA percentage based Admission Control Policy

  I wanted to light for some time, and it is better described by a scenario.

  1. I have a 2 host cluster, to make it easy, each host is configured with 32 GB of physical memory

  2. the cluster is configured with Admission Control activated, and the policy is set to percentage of the cluster resources CPU 50% / 50% memory with the idea of reserving half of the ability to support a 1 server failure.

  3. for the sake of argument, let's say there are 10 servers in the cluster, NONE of these servers are using any type of booking for CPU / MEM.

  4. each of these 10 servers is configured for 6 GB memory (6 GB x 10 VM = 60 GB memory affected). For the sake of the argument lets say DRS distributes 5 virtual machines per host, 30 GB per host.

  5. now, in my opinion, Cluster, each of my guests show a % 93% memory used, I have alarms jump in vCenter shouting that memory is low.

  6. Since none of these virtual machines run reservations (cut the CPU and memory) switch on the percentage of capacity. Those numbers are hardly showing a tooth due to default reserves applied, (what happens as 32 Mhz?) Readings for the current ability to failover cluster CPU and memory switch are 98% CPU, memory of 99%. Well above the 50% necessary for CAC to kick in and say STOP FEEDING ON VMs!

  Now that I put on the Foundation, we have allocated 60 on the 64 GB of physical memory to virtual machines and vSphere alarms are declaring 'hey you're Out of memory', however, by using a product such as VeeamOne, he pointed out that each of these 10 VMs are really using only 2 GB memory physical host the 6 GB allocated. If "technically", we are only using 20 GB (10 GB/host) of 64 GB of memory available to the cluster host physical.

  The million dollar question is... if I'm not one of the hosts, all THE virtual machines will come online on the last surviving node?

  Scenario 1:

  Host 1 32 GB of physical memory, 5 VMs, 30 GB of allocated memory, alarms to use 93%

  Host alarms 2 32 GB of physical memory, 5, VMs, 30 GB memory allocated, 93% of use

  1 host fails, HA intervenes, it goes to the State, it cannot power on virtual machines more because it is only 2 remaining GB and I need power over 30 GB of value? (I expect that this is not the case, we should be able to provision...)

  Scenario 2:

  1 32 GB of physical memory to the host, 5 VMs, 30 GB of memory allocated, physical 10 GB used by Veam reported, physical of 20 GB remaining

  The host of 2 32 GB of physical memory, 5, VMs, 30 GB of memory allocated, physical 10 GB used by Veeam one reports, physical of 20 GB remaining

  Welcome 1 fails, HA comes into play, it starts every 5 VMs on host 2 because it has 20 GB remaining physical and needs only 10 GB?

  It seems that there should be a better way to really tell if you can fully support 1 node failure model % with the memory allocated in your cluster-based, anyone can demystify it for me and explain?

  There are several measures that serve to plan capacity. For the record, good or bad, I look at demand and active memory. Also, if I see the balloon flight or in Exchange, I feel its time to add a host (or just memory... it all depends on several other measures). DRS is starting to complain when the hosts are stressed. Right resize VMs from the beginning makes it easier trend and plan additional abilities. There should be no need more allocate as much.

  I also use VROPS in my environment. This is very useful for trends and plan ahead.