What is a hardware requirement for using vSAN?
Memory. The memory requirements for vSAN depend on the number of disk groups and devices that the ESXi hypervisor must manage. Each host must contain a minimum of 32 GB of memory to accommodate the maximum number of disk groups (5) and maximum number of capacity devices per disk group (7).
How many disks do I need for vSAN?
Up to seven magnetic disks. All capacity devices, drivers, and firmware versions in your vSAN configuration must be certified and listed in the vSAN section of the VMware Compatibility Guide.
Does vSAN need RAID controller?
Will a RAID controller that does not support pass-through mode work with VSAN? If the RAID controller does not support pass through mode, VSAN will still work. Since VSAN doesn’t control the device directly, the proximal IO algorithm built into VSAN will not function efficiently.
Can vSAN run without vCenter?
vSAN & vCenter are totally independent of each other and vSAN will continue to run even without vCenter. Assuming you had a vSAN cluster all setup and configured today, running production workload. Someone then accidentally powered off the vCenter server, technically, nothing is going to happen to the vSAN environment.
How many nodes does vSAN have?
Number of Nodes We have a requirement of a minimum of three nodes for a vSAN cluster (two physical nodes, if you use the 2-node option with Witness Appliance), and such minimum comes down to quorum, and math.
What is a vSAN ready node?
vSAN ReadyNode™ is a validated server configuration in a tested, certified hardware form factor for vSAN deployment, jointly. recommended by the server OEM and VMware. vSAN ReadyNode™ are ideal as hyper-converged building blocks for larger data.
Do you need SSD for vSAN?
Storage Device Requirements All capacity devices, drivers, and firmware versions in your vSAN configuration must be certified and listed in the vSAN section of the VMware Compatibility Guide . One SAS or SATA solid-state disk (SSD) or PCIe flash device.
What RAID does vSAN use?
RAID 5 or RAID 6 erasure coding enables vSAN to tolerate the failure of up to two capacity devices in the datastore. You can configure RAID 5 on all-flash clusters with four or more fault domains. You can configure RAID 5 or RAID 6 on all-flash clusters with six or more fault domains.
Will vSAN work if vCenter is down?
As demonstrated above, vSAN will continue to operate if vCenter Server is offline.
Does vSAN use NFS?
vSAN File Service is a layer that sits on top of vSAN to provide file shares. It currently supports SMB, NFSv3, and NFSv4.
How do I increase my vSAN capacity?
- Expand the storage capacity of your cluster either by adding storage devices to existing disk groups or by adding disk groups.
- Improve the cluster performance by adding at least one cache device (flash) and one capacity device (flash or magnetic disk) to an existing storage I/O controller or to a new host.
Can vSAN run on 2 nodes?
vSAN 7 Update 1 introduces the capability to use a shared witness appliance instance across multiple 2-Node deployments. Up to 64 2-node clusters can share a single witness appliance.