E Expert recovery

With expert recovery, you can repair aspects of the operating system on a damaged root disk using an Ignite-UX server or HP-UX OE media to boot the system. There are minor differences in message content between using a server or media, but the process is functionally identical. When using media, enabling and using networking is strictly optional.

Expert recovery can be useful if your system gets compromised or becomes corrupt and does not boot to a login prompt, or if the system boots but critical operating system files are corrupted. At that point, it might be useful to restore system elements made available by booting from an Ignite-UX server or OE media.

While it might be possible to repair LVM and VxVM problems, that would require in-depth knowledge of those subsystems and is not documented here.

Expert recovery is not useful in recovering from hardware failures.

Expert recovery preparation

The more you know about the system disk and its layout before you encounter major damage or corruption, the easier it will be for you to recover.

Much of this information, including file system types, can be obtained by accessing your online system manifest, either using Ignite-UX or by reading the hardcopy that came with your system.

Before you attempt to recover an HP-UX system, you must gather the following information:

•The version of HP-UX on the system you are attempting to recover.

IMPORTANT: The HP-UX version of the system to recover must match the HP-UX version on the boot server or OE media. For example, use HP-UX 11i v1 (B.11.11) OE media to recover an HP-UX 11i v1 (B.11.11) system.

•The hardware path of the root file system on the disk (that is, what file system you will be checking/repairing using fsck.)

•Whether you have an LVM, VxVM, or whole-disk system.

The Expert recovery procedure

The following is an example procedure for using expert recovery. Depending on your version of HP-UX, your disk layout, and whether the client is Integrity or PA-RISC, the details of these screens might vary.

IMPORTANT: This procedure requires the commands fsck and mount running successfully on the system disk.

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HP UX System Management Software manual Expert recovery preparation, Expert recovery procedure
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UX System Management Software specifications

HP-UX System Management Software is a robust suite of tools designed to facilitate the administration and management of HP's Unix-based operating system, HP-UX. As organizations increasingly rely on mission-critical applications, the need for a reliable and efficient management solution becomes paramount. HP-UX provides a comprehensive understanding of system performance, resource utilization, and enterprise-wide configuration, all while maintaining high availability and security.

One of the key features of HP-UX System Management Software is its Advanced System Administrator Toolkit. This toolkit includes a wide array of utilities that streamline daily administrative tasks such as monitoring system performance, managing user accounts, and configuring system settings. Tools such as Glance provide real-time monitoring of system resources, enabling administrators to identify bottlenecks and optimize performance.

The software also boasts an advanced security framework, including features such as Role-Based Access Control (RBAC) and Secure Shell (SSH) for secure data transmission. Security patches and updates can be managed through HP’s Service Pack for HP-UX, which provides a streamlined method for maintaining system integrity and compliance with various regulatory standards.

Another notable aspect is the extensive support for virtualization technologies. HP-UX supports HP’s Integrity Virtual Machines (IVMs) and vPars, allowing administrators to create multiple isolated environments on a single physical server. This not only enhances resource utilization but also improves disaster recovery planning by enabling easier backup and restore processes.

For storage management, HP-UX offers tools that enable easy setup and management of Logical Volume Managers (LVM). This allows simplified disk space allocation and management, ensuring that critical applications have the necessary resources without manual intervention.

Furthermore, HP-UX is designed with compatibility in mind, supporting a wide range of third-party applications and frameworks. Integration with management platforms like HP System Insight Manager enhances the ability to monitor and manage systems from a centralized perspective, providing alerts and reports that help in proactive decision-making.

In summary, HP-UX System Management Software delivers a streamlined approach to system administration, focusing on performance, security, and ease of management. Its advanced features, combined with an emphasis on virtualization and storage management, make it a powerful tool for organizations seeking reliability and efficiency in their Unix-based environments. As businesses continue to evolve, tools like HP-UX will remain crucial for ensuring consistent performance and operational excellence.
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