HP StorageWorks Business Copy EVA administrator guide This guide describes the administration of HP StorageWorks Business Copy (local replication) features on HP StorageWorks Enterprise Virtual Arrays.
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Contents About this guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Intended audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Prerequisites. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Document conventions and symbols . . . . . . .
Figures 1 Tables 1 2 4 Typical local replication environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Document conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 HP StorageWorks local replication planning worksheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
About this guide This guide describes the administration of HP Business Copy (local replication) on HP StorageWorks Enterprise Virtual Arrays. Intended audience This guide is intended for managers, supervisors, administrators and operators of storage area networks (SANs) that include HP StorageWorks Enterprise Virtual Arrays. Prerequisites Readers should be familiar with the administration of SANs and local area networks.
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1 About HP StorageWorks Business Copy EVA HP StorageWorks Business Copy EVA (hereafter referred to as local replication) is the HP product name for licensed local replication features on HP StorageWorks Enterprise Virtual Arrays. This chapter describes basic aspects of the product. Local replication Local replication allows you to quickly create local, point-in-time copies known as snapclones and snapshots. Snapclones A snapclone is an independent, point-in-time copy (replica) of a virtual disk.
Supporting products and interfaces Several HP StorageWorks products and interfaces provide local replication on HP StorageWorks arrays. HP StorageWorks Command View EVA This product is required. You cannot use local replication without installing this product.
HP OpenView Storage Data Protector This optional product provides additional capabilities and benefits. • Interface: graphical user interface • Automates tasks and provides instant recovery using HP Data Protector extensions for EVA arrays • Executes snapshots using a an HP Data Protector agent to communicate with HP Command View EVA HP StorageWorks Fast Recovery Solutions This optional product provides additional capabilities and benefits.
Typical environment In a typical environment, a management server is running HP Command View EVA and local replication software, for example, HP StorageWorks Replication Solutions Manager. The management server is connected by LAN to multiple hosts running replication manager host agents. These hosts contain production database and backup applications that perform I/O on multiple storage arrays in the SAN.
2 Planning and best practices Planning local replication in new SANs If you have more than one SAN or site, apply the following planning steps to each. Step 1. Meeting license requirements Determine the specific arrays in your SAN that need local replication. You need to obtain local replication licenses for only these arrays. Determine the license requirements for each array. See ”Managing local replication licenses” on page 13. Step 2.
Planning local replication upgrades Replication components have many dependencies and relationships to other SAN components. For supported versions of related products, see HP StorageWorks EVA software compatibility reference on the HP StorageWorks Business Copy EVA web site. When planning upgrades, consider the following: Interface versions Before upgrading a local replication interface, ensure that the interface prerequisites are met.
Managing local replication licenses To perform local replication (create snapclones and snapshots), an HP StorageWorks array must have a valid local replication license. This replication license is also known as a license-to-use, or LTU. Determining required LTUs For each array, estimate the source storage space (in TB) to be locally replicated, regardless of the Vraid level. This space is called the array’s replicated capacity.
Managing replication activities Develop operational guidelines and best practices to manage the following. Simultaneous replication operations Minimize the number of replication requests to the same array at the same time. Too many simultaneous local replication events can reduce array performance. Avoid making simultaneous multiple replication requests to the same virtual disk.
Network configuration changes If possible, avoid changing the network identification (computer network name or IP address) of a management server or the computers where replication host agents are running. • Server identification change - If identification of a management server changes, you must use documented procedures to update all associated replication host agents so they can communicate with the management server.
Planning and best practices
Index A audience 5 authorized reseller, HP 6 C conventions document 5 D document conventions 5 prerequisites 5 related documentation 5 H help, obtaining 6 HP authorized reseller 6 storage web site 6 Subscriber’s choice web site 6 technical support 6 L license planning 11 P prerequisites 5 R related documentation 5 S snapclones description 7 snapshots description 7 Subscriber’s choice, HP 6 T technical support, HP 6 W web sites HP storage 6 HP Subscriber’s choice 6 HP StorageWorks Business Copy EVA
