What is a physical server to virtual best practices?

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• Required physical server Vs Virtual Machine memory

  Is there a white paper explains why we we need less memory in the Virtual Machine as compared to the physical Machine.

  The problem is that my boss wants to know why this is so. It is very difficult for me to explain this to him, he wants to see a white paper OR some article on the internet.

  As long as a VM administrator, I know that we can add and remove a virtual computer memory but it will be not that simple when it comes to physical servers. I suggested to him that we must follow a standard, and if there is a requirement for business we can increase or decrease is according to the needs. So when the salesman comes in they give us specifications for the physical server and not the virtual and there is always an argument that why should have 6-8 GB memory VM from the outset. In order to avoid everything that the arguments it needs more proof.

  Thank you

  Here is a simple explanation of why VM need less memory.  Transparent page sharing.

  If you install a virtual of Windows 2008 SP2 single server machine, lets assume that it uses 500 MB of RAM while sitting idle.  It's basically all running components loaded into memory.

  If you then put a same VM, the new machine virtual don't re-charge not the exact same components in memory.  ESX will see the same exact memory block has been loaded into the memory of the host Server1 (phyiscal material) and then simply point the virtual machine to the component already loaded into memory.

  After the virtual machine has been loaded and GST has kicked, you will probably find that for 2 identical virtual machines you use not only 650MB of memory (not 1000 as expected).  This is because 80% of the components has need of the new virtual machine, it only uses the existing memory blocks, instead of duplicating.

  Now, repeat this operation on 10 VM and assume only 50% of the memory is the same between them... it is still a huge economy of memory.  In this case, since each VM Windows is really loading only 250 MB of itself in memory and split the rest, technically you don't need to allocate 2 GB of RAM for each virtual computer... you can easily get away with putting 1 to 1.5 GB on this server and I have always the same ratio of available memory for the programs that you would do if it was a physical server.

• Computer configuration virtual for SRM - files from memory Swap file/Virtual - best practice replication?

  Hello, I am very new to the model DR VMWare and have a few persistent questinos.

  What is the recommended best practice re: virtual computers invited windows and virtual memory files.  I think it would be unnecessary to replicate these changing data on the DR site.  I have several virtual machines with 6-8gig memory and I'm just wondering how can I isolate the ESX memory swap files and virtual memory in Windows feedback, so they get not replicated on the Dr site as often as changing os/data.  If it's even necessary to replicate.

  We use vspere vcenter 4.1 related modes, RS 4.1 the two on-site Cellera NX4 ReplicatorV2.

  I wonder if I can install the files of pages to be in a condition NOT replicated file system or a file system which is the only value replicates every 24 hours, or once a week.

  My reasoning here is.  Once the file is there, the operating system really cares about the changes in this file and dumps windows virtual memory on a restart, as well as the .vswp file.

  what I mean is built on a virtual disk full and placing the windows file on this virtual disk to Exchange.  This virtual disk could exist in a data store hosted on a celerra file system that does not get repeated as frequently as data/OS file systems.

  or am I completely off base here.

  I think that if you tried to reproduce these files and maintain a sync time minute 10, you would need a ton of bandwidth.

  any suggestions or recommendations or even pointers to Articles/items worth points = D.

  Thanks for your time.

  Given that the configuration is made at the level of the cluster and has no impact on the SRM, replication is not a factor.  Don't forget, not to replicate the LUNS with the swap, just files have a LUN configuration on the side of recovery as well and have this defined cluster Exchange files.  Also, on the virtual machine critical we define reservations memory so the pagefile is not a factor at all.

  Kind regards...

  Jamie

  If you found this information useful, please consider awarding points to 'Correct' or 'useful '.

  Remember, if it isn't one thing, it's your mother...

• SQL Server 2005 STD. best practice for deploying VCenter 4

  Hi all

  I I know what kind of criteria from database / best practices that I need to create to support VCenter Management Server v4?

  I use Windows Server 2003 standard and SQL Server 2005 SP3 Standard edition.

  Thank you.

  Kind regards

  AWT

  Maybe this can help you.

  MCP, VCP

• VCenter 6.0 upgrade vCenter Server 6.0 best practices?

  Can someone help me best practices for best practices of vCenter server 6.0

  These KB should help you to best practices and upgrade guide

  https://pubs.VMware.com/vSphere-60/topic/com.VMware.ICbase/PDF/vSphere-ESXi-vCenter-Server-60-upgrade-guide.PDF

  Deployment Guide

  https://www.VMware.com/files/PDF/Techpaper/VMware-vCenter-Server6-deployment-guide.PDF

  Best practices

  http://KB.VMware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalID=2107948

  and new features have the peculiarity of cross

  http://featurewalkthrough.VMware.com/#! / vsphere-6-0

• Physical server to virtual machine migration

  I'm planning on migrating some if our biggest servers and I wonder witch method to use in order to get the fastest P2V migration. I've used both methods hot and cold, but y at - it performance that can be done to help accelerate the migration? The range of servers between 400 G-1 t of size.

  Thank you.

  What I thought was that if the data files are on a different drive than the OS and application files that you may p2v the OS/APP disk and then you have your new virtual machine less data. Then present the existing SAN (previously used by the physical system) LUNs to the virtual machine as RDM virtual. Mount the LUNS and assign the letter nonsense (for windows or same mount point for NIX) previously used by the system physical one while you are finished.

  This method involves less amount of data transfer and associated downtime. It depends of course if your DB data files are separate LUNS for your application files.

• Server Windows 2012 - best practices to create the template

  On Windows 2012, has anyone created models for this OS (VM)?

  If so, what services did you remove, disable or install or what changes did you make to create a model of 'Base '?

  Any ideas or suggestions?

  Thank you

  We have plenty of 2012, immediately, but I have bookmarked the blog post below it... looks pretty good

  http://www.Boche.net/blog/index.php/2012/08/16/Microsoft-Windows-Server-2012-tips/

• Six physical switches, it is best practice?

  You can see how we have our configured below vSwitches. This provision is optimal or should we consider the changes?

  Is there a downside to what the Service Console on the network of the VM?

  Security.  The Dungeon your service console on a private segment is preferable.

  If I wanted to move the Service Console for the VMotion network I just create a Service Console in the vSwitch VMotion and delete out of the virtual machine

  whenever you make changes to the service console network you will lose probably connectivity.  My suggestion would be to move all the VMS on host, make your changes to the network.

  Here's a good KB that can be a bit convenient.

  http://KB.VMware.com/kb/4309499

• Best practices of the controller auto-Anchor

  Hi all

  I got confused with this configuration. I have 2 of Wlc. One is the internal controller and another set for the controller of the anchor (different subnet-DMZ area) for traffic comments. Where can I configure DHCP assignment for users of this... ? Must deal with to intervine Production controller in this dhcp or will I directly anchor to take care of everything... ? What is recommended?

  And any best practice doc is also available for this... ?

  Help, please...

  Thanks in advance.

  I usually use the WLC anchor for dhcp or the client will in fact have a dhcp server in the DMZ. I don't like to dig holes through the FW to dhcp unless I have to.

  Sent by Cisco Support technique iPhone App

• Best practices and security on ESX 3.5

  Can someone point me to some documents final regarding the ESX Server security and best practices related to securing the ESX host.

  Things like not to use the account Root, regular patching esx low locking? ...

  Thank you.

  Concerning

  Joe

  Hello.

  Try the Security Hardening Best Practices document.

  Good luck!

• Migrate from virtual vCenter5.0 of physical server

  Hi guys,.

  I'm in the process of upgrading my vSphere5.0 to 5.1, but before that I want to migrate my vCenter5.0 (VM on the cluster to vSphere5) to the physical server. I know there is no direct upgrade from the virtual to the physical server, so I have to migrate virtual and physical memory with same version 5 and then pass vCenter5.0 to 5.1 on the physical server. Please help with the steps and questions below:

  1. build the server target with the same operating system (win2008r2 std x 64, partition of 2 x 1 for OS and 1 for the vCenter database)

  2. stop services vCenter vCenter backup config using the data migration tool (vCenter5.0). Backup DMT include the ADAM database as well? If this is not what is the best way to migrate the ADAM database?

  3. SQL database backup

  4. create the DSN connection on the target server

  5 copy the Migration.zip data for the target server

  6. run install.bat and follow the wizard, can I install the data to a different location as 2nd partition, or it must be in the same place as on the source

  7 restore the SQL database

  8 restart target vCenter

  Any help will be appreciated!

  Thank you

  S

  Sandyforvmware wrote:

  Hi Gkeerthy,

  Everything is on the same virtual server and I use SQLexpress.

  Please could you confirm 2 steps below:

  1. I don't have to create the DSN connection if everything is on the same server, is that correct? n ' yes no need to create the DSN

  2. I use 2nd partion on the Server D: target as a new location for the DB (Source have a single partition C: and all that is on it), it won't break anything, just? You can select the destination during installation... no thing will happen

  Thank you very much

  See the info up-to-date

• Convert a physical server (w / HBA) virtual

  Hello

  I need your help to convert a physical server connected to a HP Modular Storage Array 1000 thanks to an HBA.

  My question: what is the best practice to do this kind of conversion? When I select the physical server VMWARE converter will convert the storage on a virtual drive?

  Thank you.

  Pedro

  The big question is what is the storage. ESX (i) have a limit on the size of the drive (2 TB less than 512 bytes). The MSA1000 is less than 2 TB, you should be able to run the converter and create the virtual server, including the E: drive. If the MSA is greater than 2 TB, but the used space is less than 2 TB converter will allow you to create the fret.

• vCentre virtual conversion physical server

  We run vCentre 4.0 server who is physically installed on windows xp and want to virtualize in our vSphere ESX DR environment. The intention is to use the vCentre converter to generate the virtual machine on the server ESX and then use the existing physical vcentre to recognize the virtualized vCenter VM and set its IP address to what was the physical vCentre and then decommission the physical vCentre. During our attempted conversion vCentre VM, we have experienced a blue screen at 95% and conversion failed, note it was after stopping relevant services and the SQL db. This approach is possible, or does it install vCentre on a virtual machine manually and move the database?

  Thank you

  Hello

  I recommend installing a new Virtual Center, then restoring the DB and start working it would be best practice as well. If the converter is defective please check the logs of converter to see why and where it fails.

  Please take a look at the following KB

  http://KB.VMware.com/kb/5850444

  Kind regards

  Jana.

  NOTE: If your question or problem has been resolved / answered, please mark this thread as answered and awarded points accordingly.

• Conversion of physical server into a virtual machine

  Hello

  I would like to take a physical server and convert it to a virtual machine on the same box.  I'm new to VMs, so please tell me if this is possible and if yes, what is the best way to do it. Right now, I think these are the basic steps:

  (1) take operating system image current (2003 Server STD) using Acronis.

  (2) wipe server and install ESXi 4.

  (3) use the free VMware Converter to convert the Acronis image to a guest VM on the ESXi host.

  Will this work? Am I missing something? The traps that I should look out for?

  A few questions more to go with this:

  -J' currently have an ESXi 3.5 on a desktop host. Wouldn't be better to convert this machine on the fly to a guest on this 3.5 host, then move the guest to the new 4.0 host once it is ready?

  -This server is now an application server and has a few databases, such as WSUS and Kaspersky Administration kit and maybe something else I can't think right now. Is that causing trouble with the DBs in the transition from the physical to the virtual?

  -The machine has also acts as a file server and is connected to our iSCSI SAN. Will be a problem or I would be able to remap the LUN to the virtual machine quite easily just like I did to the physical machine?

  Sorry for the long post. Any help would be greatly appreciated. Thank you!

  As long as you can take decisions associated with the image with Acronis and then convert it to a virtual machine, I think this is a good approach.  You can convert the server in a virtual machine running on your ESXi 3.5 environment but I would not run a server database production on class workstation hardware.  The performance would be probably pretty bad if you had a large number of users hitting that database.  As for using Acronis I know that it is supported but in the past I have never tried to convert an Acronis image for a virtual computer by using converter.

  The databases themselves should not have any problem on a virtual machine.  SQL runs in a virtual machine and saw complex databases even accomplish a lot.

  Reconnect to your iSCSI SAN shouldn't be a problem either.  You must ensure that the networking on the newly built 4 ESX host is configured to allow you access to all the VLANS required (iSCSI VLANS, server VLAN, etc.).  It is an important step to ensure that you have right or you will not be able to reinstall your iSCSI LUNS, once the server is converted.  Once the networking is configured the process of reconnecting to the iSCSI LUN from inside your virtual machine is the same as if it was physical.

  Good luck!

• What best practices to remove a host server data store without emptying the contents of the data store

  Hi all

  This question was probably asked a million times. the best practice to remove a host server data store without emptying the contents of the data store?

  I have two clusters and I moved host group A to group B. host A is now to see data from Cluster Both A store and Group B datastore. We want that host A to store data in Cluster B. The Cluster a data store is not and can not be empty coz VM A Cluster using data warehouses. So I just unpreset the data LUN to host A store and Reanalyze the data store? Or there is a better way to do it?

  Thank you all

  Yes that's what I meant - should have specified where virtual machines are running.