Comparison of VMware vSAN Configuration Maximums:

My previous blogs “VMware Virtual Machine and ESXi Maximums” and Comparison of VMware vCenter Configuration Maximums have already covered the comparison of vSphere configuration maximums between vSphere 5.5, 6.0 and 6.5 for Virtual Machine, ESXi, Storage, Networking, and vCenter Server. Now lets go ahead and compare the VMware vSAN configuration maximums. Here I have also included the Virtual Volume (VVOL) maximum supported configuration parameters.

Virtual SAN Configuration Maximums:

From the below Virtual SAN configuration maximums table, we can get the information about vSAN parameter’s upper limits with different versions of vSAN.

Virtual SAN Parameters vSAN 5.5 vSAN 6.0 vSAN 6.5 Virtual SAN ESXi host Virtual SAN disk groups per host 5 5 5 Magnetic disks per disk group 7 7 7 SSD disks per disk group 1 1 1 Spinning disks in all diskgroups / host 35 35 35 Components per Virtual SAN host 3000 9000 9000 Cache tier devices per host 5 5 Capacity tier devices per diskgroup 7 7 Capacity tier maximum devices 35 35 Virtual SAN Cluster Number of Virtual SAN hosts in a cluster 32 64 64 (Hybrid) 64 (All-Flash) Number of datastores per cluster 1 1 1 Virtual SAN virtual machines Virtual machines per host 100 200 200 Virtual machines per cluster 3200 6400 6000 Virtual machine virtual disk size 2032 GB 62 TB 62 TB Disk stripes per object 12 12 12 Flash read cache reservation (%) 100 100 100 Failure to tolerate 3 for VM with any size of virtual disk 3 for VM vdisk <= 16 TB

1 for VM vdisk > 16 TB 3 for VM vdisk <= 16 TB Percentage of object space reservation 100 100 100 vSAN / Physical network fabrics 2 2 2 Virtual SAN iSCSI Target Number of iSCSI LUNs per Cluster 1024 Number of iSCSI Targets per Cluster 128 Number of iSCSI LUNs per Target 256 Max iSCSI LUN size 62 TB Number of iSCSI sessions per Node 128 iSCSI IO queue depth per Node 4096 Number of outstanding writes per iSCSI LUN 128 Number of outstanding IOs per iSCSI LUN 256

Virtual Volumes Configuration Maximums:

The below table contains the information about the comparison of maximum supported values of Virtual Volumes Parameters for vSphere 6.0 and vSphere 6.5.

Virtual Volumes Parameters VMware vSphere 6.0 VMware vSphere 6.5 Data Virtual Volume Size 62 TB 62 TB Number of Virtual Volumes bound to a host 64,000 64,000 Number of PEs per host 256 256 Storage Container size 2^64 2^64 Storage Container per host 256 256 Maximum outstanding PE I/O operations 128 128 Configured VPs per host 128 128 Maximum configured VVol managed storage arrays per

host 64 64

Reference: VMware vSAN Maximums

In my next blog, I will share the comparison of vCloud Director’s configuration maximum. If you are looking for VMware Virtual Machine and ESXi Maximums, or Comparison of VMware vCenter Configuration Maximums Please check my previous blogs.

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