Architecture guide for Vates VMS
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Basic Design Considerations
-
Pool
- Hosts: recommanded 16 (limit: 64)
- HA: 3 hosts minimum
- Redudancy: Can be managed by multiple Xen-Orchestra Appliance for main features
-
Storage
- File: NFS, SMB
- Block: iSCSI, FiberChannel, SAS
- Virtual Disk: 2 TiB limitation until QCow2 release
-
XOSTOR
- Hosts: between 3 and 7
- HA: 3 hosts minimum
Limitations
-
Host
- Up to 960 logical processors
- Up to 6 TiB of RAM (theoretically, support up to 12 TiB with security support)
- Up to 16 physical NICs, 512 Virtual NICs and 800 VLANs
-
VM
- Up to 32 vCPUs for untrusted VMs, for trusted VMs : 128 vCPUs in BIOS mode and 96 vCPUs in UEFI.
- Up to 1.5 TiB of RAM with memory snapshot, otherwise 8 TiB.
- Up to 241 Virtual Disk Images per VM (including virtual cd-rom : only 1 per VM)
- Up to 7 vNICs (XCP-ng guest tools must be installed)
- Up to 6 passed-through USB devices
VATES Validated Design
Multi site example
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Multi site example with xoproxy
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Multi room stretched cluster example
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