+ Post New Thread
Page 1 of 3 123 LastLast
Results 1 to 15 of 38
Thin Client and Virtual Machines Thread, Moving from Vmware to Hyper-v? in Technical; For the last few years been running our VMWare system based on several hosts each with the free VMWare ESXi4.1. ...
  1. #1
    AButters's Avatar
    Join Date
    Feb 2012
    Location
    Wales
    Posts
    497
    Thank Post
    155
    Thanked 109 Times in 84 Posts
    Rep Power
    42

    Moving from Vmware to Hyper-v?

    For the last few years been running our VMWare system based on several hosts each with the free VMWare ESXi4.1. No VSPhere or anything, the totally free version. (before anyone laughs, IMHO an excellent way for a school to reap 90% of the benefits of VMWare virtualisation at 0% the cost!!)

    Looking at licencing it up on VmWare ESXi5 with the essentials licence (as the free version of 5 is totally castrated i.e 8GB ram limit etc) so can do more advanced things and also make VM Image backups much easier / automated maybe using something like Veem.

    Before I take the plunge also got a beady eye on Hyper-V. We get all MS licences cheap as chips through our LEA so could be a much more cost effective route than VMWare.

    From what I can see (and read) HyperV still seems to be a year or two behind vmware in terms of overall smoothness/polishedness / ease of use / features etc? BUT I have not yet set up a HyperV server to try so could be talking out my rear.

    What do you guys and gals think. Anyone actually done the move?

    Cheers
    Last edited by AButters; 8th March 2012 at 04:15 PM.

  2. #2

    m25man's Avatar
    Join Date
    Oct 2005
    Location
    Romford, Essex
    Posts
    1,644
    Thank Post
    49
    Thanked 467 Times in 339 Posts
    Rep Power
    141
    We have been on Hyper-v for those reasons from the outset it does everything we need with ease but check out the features of HV3 as these will close the gap significantly.

  3. #3

    Domino's Avatar
    Join Date
    Oct 2006
    Location
    Bromley
    Posts
    4,127
    Thank Post
    217
    Thanked 1,322 Times in 812 Posts
    Blog Entries
    4
    Rep Power
    518
    There's no memory overcommit in hyper-v : so if you use that in ESX you might find a need for more RAM in Hyper-v

  4. #4

    glennda's Avatar
    Join Date
    Jun 2009
    Location
    Sussex
    Posts
    7,821
    Thank Post
    272
    Thanked 1,140 Times in 1,036 Posts
    Rep Power
    350
    Linux KVM/Red Hat Enterprise Virtulisation - in terms to performance kicks Hyper-V's backside

  5. #5

    FN-GM's Avatar
    Join Date
    Jun 2007
    Location
    UK
    Posts
    16,216
    Thank Post
    893
    Thanked 1,773 Times in 1,529 Posts
    Blog Entries
    12
    Rep Power
    461
    The Ram limit is for virtual machines rather than the host isnt it?

  6. #6


    Join Date
    Feb 2007
    Location
    51.403651, -0.515458
    Posts
    9,388
    Thank Post
    241
    Thanked 2,815 Times in 2,077 Posts
    Rep Power
    813
    Quote Originally Posted by AButters View Post
    as the free version of 5 is totally castrated i.e 8GB RAM limit
    VMware increased the limit to 32GB after a massive backlash from customers. By comparison, Hyper-V hosts have a limit of 1TB.

    Quote Originally Posted by AButters View Post
    make VM Image backups much easier / automated maybe using something like Veeam.
    Veeam Backup & Replication is also available for Hyper-V. Hyper-V Backup from Altaro looks quite good too.

    Quote Originally Posted by AButters View Post
    From what I can see (and read) Hyper-V still seems to be a year or two behind VMware in terms of overall smoothness/polishedness /ease of use/features etc.
    As m25man mentioned, Hyper-V R3 essentially closes that gap. It even has quite a few features ESXi 5 doesn't. For a school environment, I can't see any reason to go with VMware.

  7. #7


    Join Date
    Feb 2007
    Location
    51.403651, -0.515458
    Posts
    9,388
    Thank Post
    241
    Thanked 2,815 Times in 2,077 Posts
    Rep Power
    813
    Quote Originally Posted by FN-GM View Post
    The RAM limit is for virtual machines rather than the host isnt it?
    vSphere Hypervisor is limited to a maximum of 32GB of (physical) RAM. Previously, there was a 8GB vRAM limit.

    While cores are not limited in vSphere 5 licensing the amount of RAM you provision to virtual machines, called vRAM, is limited. This is important to understand. You do NOT license the total physical RAM (called pRAM) in the cluster. You license the amount of RAM assigned to active virtual machines. If a VM is powered off it doesn’t count toward licensing. The vRAM included in the licenses is pooled across your vCenter instance. If you have 3 clusters managed by a vCenter instance then you can pool all of that and use it where needed, not just on the host or in the cluster where the socket license resides. That’s also very important to understand. If your DR site is managed by the same vCenter then you can use that DR vRAM licensing in your pool. (Source)
    How much vRAM does a VMware vSphere Hypervisor license provide?
    vSphere Hypervisor license provides a vRAM entitlement of 32GB per server, regardless of the number of physical processors. vSphere Hypervisor can be used on servers with maximum physical RAM capacity of 32GB. (Source)

  8. Thanks to Arthur from:

    FN-GM (8th March 2012)

  9. #8


    Join Date
    Jan 2006
    Posts
    8,202
    Thank Post
    442
    Thanked 1,032 Times in 812 Posts
    Rep Power
    339
    The advantage of VMWare is that the upgrade from standard is as simple as adding a license key. A migration pathway couldn't be simpler.
    Essentials is a pretty good mix if you will only ever need 3 servers.

    If your changing the infrastructure to something else then, as mentioned earlier, KVM really hot contender especially when compared to hyper-v. Backup is as cheap and simple as a snapshot and copy. You'd not need to worry about puny 1TB memory limits, RHEL6 is limited to 64TB and 4096 CPU's per host with an unlimited number of hosts. It would be much more scalable than Hyper-v or VMWare essentials if you ever decided to go down the VDI route.

  10. #9


    Join Date
    Feb 2007
    Location
    51.403651, -0.515458
    Posts
    9,388
    Thank Post
    241
    Thanked 2,815 Times in 2,077 Posts
    Rep Power
    813
    Quote Originally Posted by CyberNerd View Post
    Backup is as cheap and simple as a snapshot and copy.
    What would you normally use to backup 2008 R2 guests running Exchange and/or MS SQL when using KVM as the hypervisor?

  11. #10


    Join Date
    Jan 2006
    Posts
    8,202
    Thank Post
    442
    Thanked 1,032 Times in 812 Posts
    Rep Power
    339
    Quote Originally Posted by Arthur View Post
    What would you normally use to backup 2008 R2 guests running Exchange and/or MS SQL when using KVM as the hypervisor?
    I was referring to backing up the VMImage, I don't see that it really matters what the hypervisor is. Use what you like to backup data if you don't want to keep it on an image.
    Last edited by CyberNerd; 8th March 2012 at 09:48 PM.

  12. #11

    FN-GM's Avatar
    Join Date
    Jun 2007
    Location
    UK
    Posts
    16,216
    Thank Post
    893
    Thanked 1,773 Times in 1,529 Posts
    Blog Entries
    12
    Rep Power
    461
    Quote Originally Posted by CyberNerd View Post
    Backup is as cheap and simple as a snapshot and copy.
    Its not quite as simple as that. This method is no good for a DC, Exchange, SQL, File Servers

  13. #12


    Join Date
    Jan 2006
    Posts
    8,202
    Thank Post
    442
    Thanked 1,032 Times in 812 Posts
    Rep Power
    339
    Quote Originally Posted by FN-GM View Post
    Its not quite as simple as that. This method is no good for a DC, Exchange, SQL, File Servers
    backing up a snapshot of a host doesn't preclude you from backing up the data.

  14. #13

    glennda's Avatar
    Join Date
    Jun 2009
    Location
    Sussex
    Posts
    7,821
    Thank Post
    272
    Thanked 1,140 Times in 1,036 Posts
    Rep Power
    350
    Quote Originally Posted by Arthur View Post
    What would you normally use to backup 2008 R2 guests running Exchange and/or MS SQL when using KVM as the hypervisor?
    Personally I use BackupPC for Data shares and Built in windows server back to a share which backup pc then copies. backupPC is very effecient in its data storage capablities.

    I'm currently evaluating backup software to use for the Exchange boxes and DC's. For Sims sql server a script which dumps the database using DB attach and then BackupPC takes a copy.

  15. Thanks to glennda from:

    Arthur (8th March 2012)

  16. #14


    Join Date
    Feb 2007
    Location
    51.403651, -0.515458
    Posts
    9,388
    Thank Post
    241
    Thanked 2,815 Times in 2,077 Posts
    Rep Power
    813
    The reason I asked was because I had a very quick look at RHEV on the RedHat website and on Google, but couldn't find anything relating to backing up Windows guests and/or Exchange & SQL. Obviously you could use something like BackupExec along with all of the relevant agents (expensive!!!), but I was just wondering if there was a better alternative (open source or not) when using KVM for the hypervisor?

    Probably a stupid question.

  17. #15


    Join Date
    Jan 2006
    Posts
    8,202
    Thank Post
    442
    Thanked 1,032 Times in 812 Posts
    Rep Power
    339
    Quote Originally Posted by Arthur View Post
    The reason I asked was because I had a very quick look at RHEV on the RedHat website and on Google, but couldn't find anything relating to backing up Windows guests and/or Exchange & SQL. Obviously you could use something like BackupExec along with all of the relevant agents (expensive!!!), but I was just wondering if there was a better alternative (open source or not) when using KVM for the hypervisor?
    I might be missing the point - does hyper-v have an inbuilt mechanism for backing up SQL/Exchange/AD which is independent of windows server?
    As far as I could tell its the same for all hypervisors. Use a 3rd party solution - which we had in place before we virtualised.

SHARE:
+ Post New Thread
Page 1 of 3 123 LastLast

Similar Threads

  1. Replies: 44
    Last Post: 1st June 2010, 06:11 PM
  2. Moving from CC3 to something else?
    By reggiep in forum Network and Classroom Management
    Replies: 103
    Last Post: 12th January 2009, 10:55 AM
  3. Moving from state to private
    By HMCTech in forum General Chat
    Replies: 12
    Last Post: 5th July 2008, 08:34 PM
  4. Moving from Apache to IIS
    By lovelldr in forum Windows
    Replies: 7
    Last Post: 3rd August 2007, 11:51 AM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •