Using $name Variables | HP Enterprise Volume Manager Software

EVM Jobs and Job Management

The following example illustrates the use of a job built on a volume group or Tru64 UNIX domain without a specific fileset or mount point:

CLONE VOLUME dbserver VG(oracle_domain) 2

NORMALIZE VOLUME dbserver VG(oracle_domain)

SUSPEND WAIT dbserver freeze_db.sh

SPLIT VOLUME dbserver VG(oracle_domain) $BCV1

RESUME NOWAIT dbserver thaw_db.sh

MOUNT VOLUME $BCV1 backupserver 1 N/A

LAUNCH WAIT backupserver backup_db.sh

Using $<name> Variables

The split, snap, and mount operations require a $<name> variable or a unit number to be specified. In nearly all cases, specify a $<name> variable and let EVM choose the unit number automatically.

IMPORTANT: $<name> variables must begin with a dollar sign and may not contain spaces, as in $copy_db1.

Specifying a unit number directly requires knowledge of the following:

•Unit numbers already in use

•Unit offset values for the EVM host agent where the BCVs are to be mounted

•LUN capacity of the EVM host agent

•Unit number range rules for snapshots

Running Multiple Jobs Simultaneously

Although the EVM job engine is multi-threaded and can handle the creation and execution of multiple jobs simultaneously, some operations must be performed serially, such as storage and EVM host agent access.

Because of these serial operations, there is a practical limit on the number of jobs that can be executed simultaneously. In typical environments, four simultaneous jobs can run with nominal performance degradation. As more jobs are submitted for execution, however, the EVM GUI becomes less responsive to new requests and performance starts to degrade.

The responsiveness of the EVM GUI to all requests (job creation and execution, as well as resource and log requests) is inversely proportional to the number of jobs that are currently running. Performance decreases as the number of running jobs increases.

NOTE: For optimum performance, carry out maintenance tasks, such as job creation and editing, during periods when jobs are not running.

9–8	Enterprise Volume Manager (Multi-OS) Network Administration Guide

Enterprise Volume Manager Software specifications

HP Enterprise Volume Manager (EVM) Software is a robust solution designed to optimize storage management for enterprise environments. This innovative software addresses the complexities of managing data across diverse storage systems while enhancing performance, scalability, and efficiency.

One of the key features of HP EVM is its ability to centralize storage management. By providing a unified interface, it streamlines administrative tasks, enabling IT teams to manage storage resources from a single console. This centralization not only simplifies operations but also reduces the potential for human error, leading to more reliable data management.

Another significant feature is the software's powerful automation capabilities. HP EVM automates routine tasks such as data provisioning, monitoring, and reporting. This functionality empowers organizations to allocate resources efficiently, respond to changes in demand swiftly, and ensure optimal performance without extensive manual intervention. Automated alerting and reporting mechanisms provide visibility into storage utilization and performance metrics, allowing for proactive management of storage resources.

HP EVM also supports advanced storage technologies like thin provisioning and deduplication, which help maximize storage efficiency. Thin provisioning allows organizations to allocate storage on an as-needed basis, minimizing wastage and ensuring cost-effective utilization. Deduplication, on the other hand, reduces redundant data, freeing up valuable storage space and improving backup and recovery times.

Scalability is another hallmark of HP EVM. The software is designed to grow with an organization's needs, supporting a wide array of storage devices, from traditional disk systems to flash storage. This flexibility ensures that enterprises can adapt to evolving data demands and technological advancements without overhauling existing infrastructure.

Security features integrated into HP EVM are essential for protecting sensitive data. The software supports robust encryption protocols and access controls, ensuring that data remains secure during transitions and while stored across multiple locations. Compliance with industry regulations is facilitated through comprehensive logging and reporting features, enhancing an organization’s ability to maintain regulatory standards.

In conclusion, HP Enterprise Volume Manager Software is a pivotal tool for organizations seeking efficient and effective storage management. With its centralized management capabilities, automation features, support for advanced storage technologies, scalability, and strong security measures, HP EVM stands out as a vital asset that drives operational efficiency and data integrity in today's data-centric enterprises. Investing in HP EVM not only simplifies storage management but also empowers organizations to proactively meet their data challenges.