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HPE 3PAR Quorum Witness

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Overview

HPE Peer Persistence software enables storage systems located at metropolitan distances to act as peers to each other, presenting a nearly continuous storage system to hosts and servers connected to them. This capability allows you to configure a high-availability solution between two sites or data centers where failover and failback remains completely transparent to the hosts and applications running on those hosts. Compared to the traditional failover models where upon failover, the hosts must be restarted, the Peer Persistence software allows hosts to remain online serving their business applications even when they switch from their original site to the disaster-recovery (DR) site, resulting in a much improved recovery time. The Peer Persistence software achieves this key enhancement by taking advantage of the Asymmetric Logical Unit Access (ALUA) capability that allows paths to a SCSI device to be marked as having different characteristics

HPE Peer Persistence is available with HPE 3PAR and HPE Primera systems, it leverages the robust high-availability solutions already available on these systems, and extends it even further by enabling a peer relationship between two storage systems located at geographically separated sites. The software is built in to the HPE 3PAR and HPE Primera systems, customers with remote replication setup can deploy Peer Persistence without any appliance or additional hardware.

HPE Peer Persistence Quorum Witness (QW) software facilitates automatic transparent failover within a Peer Persistence environment.  It is run on a separate server environment) and must not be part of the host cluster(s).    It is configured and connected to both arrays using network interfaces that are independent from the remote copy network used for replication data traffic.

What’s New with Version 3.0.014:


Note: Starting with version 3.0.014 , Quorum Witness (QW) will be distributed as a RPM package. The earlier versions of Quorum Witness were distributed as a Virtual Appliance ISO image that included the Quorum Witness software binaries and a Linux OS runtime image. The QW 3.0.014 RPM package will contain only the Quorum Witness 3.0.014 software and other required binaries (there is no Linux OS runtime image include in the RPM). Consequently installation of QW 3.0.014 is different than earlier versions; so please refer to the installation guide below for more details.


  • QW version 3.0.014 is released as a self-contained application, installed as an RPM package on a CentOS 7.4 (or later 7.x versions) OS or Red Hat Enterprise Linux 7.6 (or later 7x versions). Therefore customers have more flexibility in the configuration of their own CentOS or Red Hat Enterprise Linux host installation, and can apply OS security and feature updates from vendors directly, on their own schedule.
  • This version of QW (3.0.014) replaces previous versions of QW running with Peer Persistence software on 3PAR 3.2.2 and 3.3.1.
  • The QW RPM package can be installed on any physical machine or virtual machine running CentOS 7.4 (or later within 7.x) or Red Hat Enterprise Linux 7.6 (or later 7x versions) Operating Systems.
  • This version of QW server is no longer restricted to ESX or Hyper-V virtual machines. It can be installed on virtual machine of any Hypervisor that support CentOS 7.4 (or later within 7.x) or Red Hat Enterprise Linux 7.6 (or later 7x versions) Operating Systems. 
  • Mixed Peer Persistence setup using HPE Primera and HPE 3PAR arrays must be configured using Quorum Witness version 3.0.014
  • Please review the instructions regarding installation and upgrading of this version of Quorum Witness.

Customers can continue to use older versions of QW but are advised to move to the latest version for upgrades and new installations if supported with their configuration.   Please refer to the 3PAR support matrix (listed below) for compatibility. 

Product Documentation: 

HPE Peer Persistence Quorum Witness information can be found in the HPE 3PAR Remote Copy Software Users Guide:
www.hpe.com/info/storage/docs

The HPE 3PAR Quorum Witness Installation and Update Guide can be found:
www.hpe.com/info/storage/docs

Up to date Quorum Witness software compatibility information can be found in the “HPE 3PAR Support Matrix 3.3.1” document on the SPOCK page: http://www.hpe.com/storage/spock, under “HPE 3PAR” on the left side box menu “Other Hardware”.

The HPE 3PAR Quorum Witness 3.0.x Release Notes can be found: 
www.hpe.com/info/storage/docs

Up to date HPE Peer Persistence interoperability with host OS version for HPE 3PAR can be found in the “3PAR Peer Persistence Host OS Support Matrix” document on the SPOCK page: http://www.hpe.com/storage/spock, under “Array SW: 3PAR” on the left side box menu “Software”.

Product Support: 

For support, please follow the standard support processes for your HPE Storage arrays or visit https://www.hpe.com/us/en/support.html

 
Additional product information
Product #: 3PARQW
Version: 3.0.014 / 2.1.000
Software specification: qwserv-3.0.014
qwserv-3.0.014-1.el7.centos.x86_64
qwserv-3.0.014-gpl-sources
3PAR Quorum Witness 3.0.014 ALA
rcopy_qw-2.1.000.ESX
rcopy_qw-2.1.000.HyperV
3PAR Quorum Witness 2.1.000 ALA
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