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    Information regarding recent vulnerabilities

    HP is aware of the recent vulnerabilities commonly referred to as "Spectre" and "Meltdown". HP has published a security bulletin with patches for these issues and a list of impacted systems. We will continue to update the bulletin as more information becomes available and encourage customers to check the bulletin frequently.

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HP Web Jetadmin - VMware resource management

Minimum system requirements are defined for each release of HP Web Jetadmin to ensure that the HP Web Jetadmin application has adequate resources for optimal performance. The information in this document applies to HP Web Jetadmin 10 and later unless otherwise noted.
This document describes general guidelines for allocating resources to the virtual VMware machines that host HP Web Jetadmin. This document is not intended as a guide for configuring VMware systems. Many types of VMware scenarios are possible and VMware can be managed through a variety of methods. For more information about VMware resource management, see the VMware support documentation for the specific VMware product and version that you are using. For example, the vSphere Resource Management Guide is available from the VMware vSphere Documentation Web site.
  note:
The URLs and information about VMware products referenced in this document are subject to change. This document might not reflect these changes. For the most accurate information, see the current documentation for the version of VMware that you are using.
Multiple processor requirement and allocating processor resources
The minimum system requirements for HP Web Jetadmin specify dual processor or multi-core processor hardware. The VMware system on which HP Web Jetadmin runs should support a minimum of two processors. VMware ESX multiple processors must be allocated to the virtual machine that hosts HP Web Jetadmin. Support documentation for VMware discusses proportional-share processor scheduling as a way to load balance the overall VMware system and allocate resources to each hosted virtual machine. In essence, controls in VMware allocate processor shares proportionally to each of the virtual machines being hosted.
Example: To allocate two processors to the virtual machine that hosts HP Web Jetadmin, the following proportional-share processor setting is created:
VM1=2000 shares VM2=4000 shares (virtual machine that hosts HP Web Jetadmin) VM3=2000 shares VM4=2000 shares VM5=4000 shares VM6=2000 shares ________________ Total=16000 shares
In this example, the VMware ESX system has eight processors and the setup shown uses 16,000 shares to distribute a number of processors to all of the virtual machines. The system that hosts HP Web Jetadmin (VM2) is allocated 4,000 shares, which means that VM2 has a total allocation of two full processors. If a new virtual machine is added to the mix, the new virtual machine has a default allocation of 1,000 shares. The system that hosts HP Web Jetadmin now has less than two full processors. In this case, the proportional-share allocation must be adjusted accordingly.
Minimum memory requirement and allocating memory resources
HP Web Jetadmin 10.2 requires a minimum of 3 GB of RAM. This minimum requirement ensures that HP Web Jetadmin and the local version of Microsoft® SQL Server have enough memory for background tasks, client support, and other operations. Memory, just like processor power, is crucial to HP Web Jetadmin operations.
The allocation mechanism in VMware ensures that enough memory is provided for each virtual machine on the VMware implementation. Functional settings in VMware allow memory to be dynamically allocated depending on loading and conditions across the VMware implementation. The key issue to remember with HP Web Jetadmin is that the VMware minimum size setting for memory allocation should be set to 3 GB or greater. VMware guarantees that a virtual machine has at least the minimum size setting allocated in memory or it does not allow that virtual machine to start.
Given the HP Web Jetadmin requirement, memory allocation in VMware seems simple as long as the minimum size setting is invoked correctly. However, setting up memory allocation and management features on a complex VMware implementation requires careful planning and consideration. VMware online support documents, such as the HTML version of the vSphere Resource Management Guide that is available from the VMware vSphere 5.1 Documentation Center Web site, provide a good deal of information about proportioning system memory to each individual virtual machine hosted.
The following are a few other things to consider:
  • HP Web Jetadmin 10.2 requires 3 GB of RAM. Other operating system operations and applications that run on the same host might also have memory requirements.
  • The HP Web Jetadmin client requires 1 GB of RAM in addition to the server application requirement when the client application runs on the same host.
  • Implementers should consider dedicating a VMware virtual machine to HP Web Jetadmin when the software is being used for production purposes.
Other issues to consider
Disk accessibility is critical to HP Web Jetadmin operations. HP Web Jetadmin and the SQL Server instance require a great deal of disk throughput. Both services regularly issue commands to disks. Performance can be inhibited by bottlenecks on the disk systems.
The VMware ESX implementation can be configured to allocate disk resources to each virtual machine by using a modified proportional-share allocation policy setting that gives each virtual machine a measure of throughput. While HP Web Jetadmin does not have a specification for disk throughput, it is important to remember that the HP Web Jetadmin application and the SQL Server instance require high disk throughput for the software to perform optimally.
HP Web Jetadmin also requires regular access to all of the devices that are being managed. HP Web Jetadmin obtains access to the devices by communicating on the network to which the virtual machine is connected. A delay in the device response can also cause less than optimal performance and an inability to gather all of the necessary device information. The VMware support resources cited in this document provide instructions on how to properly design and control network filtering and ultimately network bandwidth.
Again, VMware support documentation and resources are available online and will help you manage resources on your VMware instance.

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