Site Recovery Manager now supports up to 1500 protected VMs

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SRM can now support up to 1500 protected virtual machines!

First, it will only work with VC/SRM/vSphere all at 5.5 and even then you must be using a very specific patch release of vSphere 5.5.

If these criteria are not met the old limit of 1000 VMs is still in place.  This also does not increase the total number of VMs you can protect with vSphere Replication; that limit stays at 500.  You can however mix and match.  For example if you are using both array replication and vSphere Replication, and have ESXi patched as above, you could choose to protect up to 1500 VMs with say 1000 array protected and 500 VR protected, or 1250 array and 250 VR, and so forth up to the maximum of 500 VR will support and the 1500 ABR will support.  The point is the total needs to stay below 1500 and the VR number below 500.

Operational Limits for SRM and vSphere Replication (KB2034768)

SRM Protection Limits for Array-Based Replication

If you establish bidirectional protection, in which site B serves as the recovery site for site A and at the same time site A serves as the recovery site for site B, limits apply across both sites, and not per site. For example, if you are using array-based replication for bidirectional protection, you can protect a total of 1000 virtual machines across both sites, or 1500 virtual machines if you use SRM 5.5 with ESXi 5.5, Patch Release ESXi550-201312001. In a bidirectional implementation, you can protect a different number of virtual machines on each site, but the total number of protected virtual machines across both sites cannot exceed these limits. For example, you can protect the following numbers of virtual machines, depending on which version of SRM and ESXi Server you run:

  • SRM 5.1 and 5.5 with ESXi Server 5.5.0 or earlier: 400 virtual machines from site B to site A and 600 virtual machines from site A to site B, for a total of 1000 virtual machines.
  • SRM 5.5 with ESXi 5.5, Patch Release ESXi550-201312001: 1000 virtual machines from site B to site A and 500 virtual machines from site A to site B, for a total of 1500 virtual machines.

SRM Protection Limits for Array-Based Replication:

Item Maximum
Protected virtual machines per protection group 500
Total number of protected virtual machines (SRM 5.5 with ESXi 5.5, Patch Release ESXi550-201312001) 1500
Total number of protected virtual machines (SRM 5.1 or SRM 5.5 without ESXi 5.5, Patch Release ESXi550-201312001) 1000 *
Protection groups per recovery plan 250 *
Recovery plans 250
Datastore groups 255 *
Concurrent recovery plans 10

SRM Protection Limits for vSphere Replication Protection

If you establish bidirectional protection, in which site B serves as the recovery site for site A and at the same time site A serves as the recovery site for site B, these limits apply across both sites, and not per site. For example, if you are using vSphere Replication for bidirectional protection, you can protect a total of 500 virtual machines across both sites. In a bidirectional implementation, you can protect a different number of virtual machines on each site, but the total number of protected virtual machines across both sites cannot exceed 500. For example, you can protect 200 virtual machines from site B to site A and 300 virtual machines from site A to site B.

SRM Protection Limits for vSphere Replication Protection:

Item Maximum
Protected virtual machines per protection group 500
Total number of protected virtual machines 500
Protection groups per recovery plan 250
Recovery plans 250
Concurrent recovery plans 10

Combined Array-Based and vSphere Replication Protection Limits with SRM

With SRM, you can run array-based protection groups alongside vSphere Replication protection groups in the same SRM Server. However, the total number of protection groups cannot exceed 250. For example, you cannot create 150 array-based protection groups and then create 250 vSphere Replication protection groups, as this creates 400 protection groups in total. If you have 150 array-based protection groups, you can create an additional 100 vSphere Replication protection groups, to make a total of 250 protection groups.

Similarly, in a combined array-based and vSphere Replication setup, you can protect a maximum of 1000 virtual machines in total per SRM Server, or 1500 virtual machines if you use SRM 5.5 with ESXi 5.5, Patch Release ESXi550-201312001. If you establish bidirectional protection, in which site B serves as the recovery site for site A and at the same time site A serves as the recovery site for site B, this limit applies across both sites, and not per site.

Combined Array-Based and vSphere Replication Protection Limits with SRM:

Item Maximum
Protected virtual machines per protection group 500
Maximum number of virtual machines protected by array-based protection (SRM 5.5 with ESXi 5.5, Patch Release ESXi550-201312001) 1500
Maximum number of virtual machines protected by array-based protection (SRM 5.1 or SRM 5.5 without ESXi 5.5, Patch Release ESXi550-201312001) 1000 *
Maximum number of virtual machines protected by vSphere Replication 500
Maximum total number of protected virtual machines (array-based replication + vSphere Replication, SRM 5.5 with ESXi 5.5, Patch Release ESXi550-201312001) 1500
Maximum total number of protected virtual machines (array-based replication + vSphere Replication, SRM 5.1 or SRM 5.5 without ESXi 5.5, Patch Release ESXi550-201312001) 1000
Protection groups per recovery plan 250 *
Recovery plans 250
Concurrent recovery plans 10

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