System Requirements Overview

An everRun system requires two x86-64 host servers that can support multiple virtual machines (VMs), and a remote management computer (that is, a general-purpose PC) that can run the everRun Availability Console.

everRun System Hardware requirements are described below. See System Software for software requirements.

System Hardware

Supported Servers

Stratus everRun software will run on any systems listed on the Red Hat® Linux Hardware Catalog that support RHEL 7.x and any of the supported processors listed in Physical Machine System Requirements.

A second computer with identical processors is required for use as a redundant server for Protected Virtual Machines (or PVMs—virtual machines that are protected by Stratus everRun software). The CPUs for every host computer must have hardware support for virtualization enabled in the firmware (BIOS or UEFI) setup utility.

RAM

A minimum of 8 GB of RAM (physical memory) is recommended.

Disk Space Requirements

Internal disks and external Fibre Channel and iSCSI disks are supported. A minimum of two drives per physical machine is required.

477 MB is required on each internal logical disk for the host CentOS operating system. In addition, 22 GB is required on two of the internal logical disks for everRun system data including logs. Only internal disks may be boot disks. The amount of disk space required for a VM’s boot volume varies depending on the operating system being used. Additional storage is needed for applications and data on each VM, as well as VM snapshots.

Network

The minimum network configuration includes two ports: one for A-link and one for a shared management/business link.

An optimal network configuration includes two 10-GbE network ports for A-Links (one of which also serves as priv0, the private network), a network interface for the management network, and as many business/production ports as your protected VMs may need. If planning to run multiple protected VMs, consider adding pairs of A-Links, up to the supported total of four pairs.

SplitSite configurations have different network requirements. For information, see SplitSite Network Requirements.

See Network Architecture Overview, A‑Link and Private Networks, and Business and Management Networks for more information.

IP Addresses

Each everRun host must have a static IPv4 IP address assigned for use by the management software. Obtain IP addresses for DNS primary and secondary servers, and gateway and subnet mask information for your management network, from your IT network administrator. See Obtaining System IP Information for more information.

Ports

everRun systems use port 443 in the local firewall for HTTPS communications, port 22 for ssh, and 5900-59nn for each active VNC associated with each VM. Firewalls must allow traffic through the appropriate ports. Firewalls must permit everRun-protected VMs to contact quorum service computers using UDP port 4557. For additional information on TCP and UDP ports, access the Knowledge Base to search for the article everRun TCP and UDP ports. See Accessing Knowledge Base Articles.

System Software

See Compatible Guest Operating Systems.

Related Topics

Physical Machine System Requirements

Important Physical Machine and Virtual Machine Considerations

Virtual Machine Recommendations and Limits

Planning Virtual Machine Resources

Configuring IP Settings