Hardware
The table below shows Nutanix hardware recommendations for Community Edition:
Table 2-1: Hardware Requirements
Component | Nutanix Recommendation | Notes |
Central Processing Unit (CPU) | Intel CPUs with VT-x support | Four-core minimum because 2 cores are dedicated to the CVM |
System memory | 16 GB minimum; 32 GB or higher recommended | 32 GB or greater recommended for AOS features such as deduplication, compression, or more user VMs |
Network interface card (NIC) | Intel-based NIC | |
Host bus adapter (HBA) | Community Edition supports Advanced Host Controller Interface (AHCI) SATA, or LSI controller with:
| |
Storage Devices (all drives) | Maximum number of SSD/HDD drives per node is four | |
Storage Devices (cold tier) | 500 GB or greater available; Maximum 18 TB (3 x 6 TB HDDs) | Hard disk drive (HDD) or Solid-state drive (SSD) for cold-tier storage |
Storage Devices (hot tier flash) | Single 200 GB SSD or greater | Place SSD(s) before HDDs (commonly Bay 0 or Bay 1). The first bay number varies depending on manufacturer labeling; NVMe-based drives are not supported |
Boot device | One 8 GB capacity device per node. It can be an external or internal device | Nutanix has successfully tested and used external USB drives and internal devices such as a SATA DOM. USB 3.0 media recommended |
Firmware | Consider updating the firmware for any hardware you plan to use to the latest version recommended by the hardware vendor |
Source: Nutanix. (2020). “Getting Started with Nutanix Community Edition”
If you use a USB flash device as your boot drive, do not remove it while the server is running!
2.1 Cluster Sizing
Community Edition supports up to four (4) nodes in a single cluster. Nutanix recommends deploying a three-node cluster to reap the most benefit from the platform. If you deploy a single node cluster, you will not be able to take advantage of Nutanix’s high-availability (HA) features.
It is not possible to extend a one or two node cluster. Moving from a one or two-node cluster requires destroying the existing cluster and all VMs.
Discuss these limitations with the customer before recommending a cluster size.
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