HP Enterprise Volume Manager Software Unit Style Replication Not Supported with Volume Groups

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Limitations and Known Issues

Unit Style Replication Not Supported with Volume Groups

Many EVM job operations provide a choice between two syntax styles:

Unit syntax—replication sources are specified in terms of the applicable storage system and unit number. This method does not provide any mechanism for quiescing a volume group or gathering the meta data necessary to reconstruct the volume group on the mount-on host.

Unit style replication is suitable only for non-LVM devices.

Volume syntax—replication sources are specified in terms of the host on which they reside and the logical volume name. This method allows EVM to quiesce the volume group being replicated and reconstructs the volume group on the mount-on host.

BCV Persistence Across Host Reboots

Persisting a device across a HP-UX host reboot requires the operating system kernel to be rebuilt. Due to the potentially disruptive nature of this operation, EVM does not rebuild the kernel. As a result, a Business Continuance Volume (BCV) mounted by EVM does not persist across a host reboot.

Mounting Multiple Logical Volumes per Volume Group

An EVM job automatically mounts only the logical volume specified during job creation. A limitation in the EVM job creation interface prevents more than one logical volume from being specified. In many cases, mounting more than one logical volume per volume group is desirable. In these cases, HP recommends adding a LAUNCH operation in the EVM job immediately following the MOUNT operation. Use the LAUNCH operation to execute a simple shell script on the mount-on host to mount any additional logical volumes as desired.

International Language Support

To use EVM host agents with UNIX operating systems in non-English environments, set “LANG=C; export LANG” in the root profile.

Release Notes – Enterprise Volume Manager (Multi-OS) Host Agent Version 2.0D

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for HP-UX

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Contents Hp StorageWorks For HP-UX Release Notes Contents Operating System Version Support Platform Specific ComponentsFile System Support Cluster FunctionalityPlatform Specific Considerations Default Configuration Supports 10 Volume GroupsFCA/HBA Compatibility Initial LUN Requirement for HSG80 ControllersLimitations RTE/Browser Versions to Correct GUI ProblemsNo More Than 128 Logical Volumes per Volume Group Logical Volume Manager SupportNo More Than 16 Disks per Volume Group One Volume Group per JobVolume Group Is the Minimum Unit of Replication Current Mapfile RequirementStorageWorks Storage System Requirement BCV Persistence Across Host Reboots Unit Style Replication Not Supported with Volume GroupsMounting Multiple Logical Volumes per Volume Group International Language SupportKnown Issues Minute Spawn Process TimeoutCannot convert string Error Message Dual Netscape Version Requirement for HP-UX Host Browsing Click OK From the software installation GUI, select QPK1100 Choose Actions Install Click OK From the software installation GUI, select B6848AB Click OK From the software installation GUI, select B6835AA Click OK From the software installation GUI, select B9789AA Click OK From the software installation GUI, select B9098AA Choose File Open Enable Java Enable Java Plugin Enable JavaScript
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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.