Server virtualization reduces cost, increases availability and enhances business agility. But for many companies, a focus only on cost reduction can become a problem. Download this HP white paper to learn how to reap virtualization's additional benefits, including built-in, cost-effective high availability & disaster recovery.
Rethinking server virtualizationBreaking performance and manageability barriers White paper
Introduction 2Advantages of scale-out iSCSI SANs. 2Reduce cost with efficient capacity utilization 3The difficult realities of cost savings. 3Built-in storage efficiency with HP LeftHand P4000 SAN Solutions. 4Simple, cost-effective HA and DR 5Storage pitfalls with most systems. 5Integrated HA and DR with HP LeftHand P4000 SANs . 6 High availability through built-in synchronous replication . 6 Disaster recovery through Remote Office Solution Pack. 7Avoid performance issues by using scale-out storage 8How bottlenecks develop. 8Scalable performance with storage clustering. 9 Better performance management for virtualized environments. 10Simple management for storage flexibility 10The problems with static storage configurations . 10Simple, non-disruptive management enables dynamic environments. 11Conclusion 11HP Education Services for HP LeftHand P4000 SANs . 12HP Services. 12HP Financial Services . 12For more information 12Figure 1. Scale-out storage creates a pool of storage resources and delivers them to application servers as logical volumes. Server A Server B Server C
HP SAN/iQ cluster
HP LeftHand P4000 SAN
Introduction Advantages of scale-out iSCSI SANsHP LeftHand P4000 SAN Solutions take iSCSI SANs Server virtualization is an ever more important tool for one step further because they are based on storage reducing cost, increasing availability, and enhancing clustering-a form of scale-out storage that creates business agility. But for many organizations, the a scalable storage pool by aggregating the critical savings that come from server consolidation are the components of a number of storage systems into a primary reason for server virtualization. single pool of resources, or storage cluster (Figure 1). Many of virtualization's additional benefits-including The cluster accepts and responds to iSCSI requests as built-in, cost-effective high availability (HA) and a single system. All physical capacity is aggregated disaster recovery (DR)-require external shared and is available to the volumes created on the SAN. storage with a comprehensive feature set to support When more storage is needed, additional storage HA and DR. Unfortunately, it is all too easy to spend systems can be added to the cluster; the cluster the savings from server virtualization on inefficient seamlessly, non-disruptively reorganizes its storage storage systems. Because they overcome many of the to incorporate the new system into the cluster. cost and management limitations of traditional SANs, HP LeftHand SANs provide low-cost, built-in support iSCSI SANs are becoming the preferred choice to for HA and DR implementations; superior, scalable support virtualized environments. performance; and straightforward management that any server administrator can understand and put into use. This white paper describes the advantages of scale-out iSCSI storage in four areas-cost, high availability and disaster recovery, performance, and management-and illustrate how iSCSI SANs, particularly the HP LeftHand SANs, provide better overall support for virtualized environments.
2. Implementing high availability across sites requires Reduce cost with an addi... [download for more]
