Citrix XenServer 6.1 limitations
Citrix have released 28th September 2012 a new version of the all mighty XenServer 6.1 The Xen is back and the change is awesome so lets dig in what the limitations are.
I will write an article later where i compare XenServer 6.1 with Hyper-V 3.0 and vSphere 5.1
Virtual Machine Limits |
|
| CPU | Limits |
| Virtual CPUs per Virtual Machine | 16 |
| Memory | |
| RAM per Virtual Machine | 128 GB |
| Storage | |
| Virtual disks (including CD-ROM) per Virtual Machine | 16 |
| Virtual CD-ROM drives per Virtual Machine | 1 |
| Virtual Disk Size (NFS) | 2TB minus 4 MB |
| Virtual Disk Size (LVM) | 2TB minus 4 MB |
| Networking | |
| Virtual NICs per Virtual Machine | 7 |
XenServer Host Limits |
|
| CPU | |
| Logical processors per host | 160 |
| Virtual CPUs per host | 900 |
| Concurrent VMs per host | 150 |
| Concurrent XenDesktop VMs per host | 150 |
| Concurrent PVS VMs per host | 150 |
| Concurrent XenDesktop VMs using IntelliCache per host | 150 |
| Concurrent protected VMs per host with HA enabled | 60 |
| Memory | |
| RAM per host | 1 TB |
| Storage | |
| Concurrent active virtual discs per host | 512 |
| Networking | |
| Physical NICs per host | 16 |
| Physical NICs per network bond | 4 |
| Virtual NICs per host | 512 |
| VLANs per host | 800 |
| Pass-through | |
| GPUs per host | 4 |
Resource Pool Limits |
|
| CPU | |
| Hosts per resource pool | 16 |
| Networking | |
| VLANS per resource pool | 800 |
| Active hosts per cross-server private network | 16 |
| Cross-server private networks per resource pool | 16 |
| Virtual NICs per cross-server private network | 16 |
| Cross-server private network virtual NICs per resource pool | 256 |
| Hosts per vSwitch controller | 64 |
| Virtual NICs per vSwitch controller | 1024 |
| Virtual machines per vSwitch controller | 1024 |
| Disaster Recovery | |
| Concurrent exports via Virtual Machine Protection Recovery | 2 |
| Integrated Site Recovery storage repositories per resource pool | 8 |
| Storage | |
| Paths to a LUN | 8 |
| Multi-pathed LUNs per host | 150 |
| VDIs per SR | 600 |
| Storage XenMotion | |
| (non-CDROM) VDIs per VM | 6 |
| Snapshots per VM | 1 |
| Concurrent transfers | 3 |
| XenCenter | |
| Concurrent operations per pool | 25 |
