– Storage administrators are vital to IT departments because they protect and maintain a company’s most valuable asset-its data.

Examining the thrashing report and who or what is recalling the data sets will help you set better management class policies. Recall thrashing: Migrating and then immediately (or in a short period of time) recalling the same set of data sets wastes valuable HSM resources and CPU cycles and can be quite costly.

Understanding what is being migrated and quickly recalled requires a thrashing report. You can also code batch JCL to be more efficient in how it handles GDG bases or sequential files.

Because HSM is so powerful and performs so many tasks, it has the potential to have problems. The areas of HSM that lead to problems are high CPU usage because of unneeded or wasteful actions, failures in space management or the recycle process, internal control data set errors, and problems with the aggregate backup and recovery support (ABARS) and/or auto dump processes. This article provides best practices for optimizing the HSM environment, specifically in lessening high CPU usage and improving space management, as well as providing tips for proactively managing HSM.

Using an SRM tool, you can correct some of the most common causes of high CPU usage associated with storage movements:

High CPU usage generally raises red flags in IT shops.

It is best to run it during low tape drive usage, such as early in the morning just before normal business hours, or just before the nightly batch cycle runs. Recycle should be part of an automated solution.

How the recycle is run–and when it is run–can also lead to wasteful recycles. Wasteful tape recycle Wasteful tape recycle usually results when the percent full setting is set too low or not: high enough.

SRM tools can help reduce or eliminate unnecessary HSM activity by tracking activity and thrashing and by tying the data sets to the DFSMS constructs.

Migrating unnecessary data sets: An easy way to reduce CPU usage is to reduce or eliminate unnecessary HSM activity that is caused by ineffective management class policies or application JCL.

One of the critical roles of the storage administrator is to understand and manage DFSMShsm, the hierarchical storage management (HSM) environment shipped with IBM z/OS systems. HSM provides backup, recovery, migration, and space management functions and enables storage administrators to manage storage at the data set level and device pool level. To optimize the HSM environment, storage administrators can set and apply rules in HSM.

Lessening CPU Usage

Return code 99 is caused by an undefined DSORG, which can cause errors during backup and migration. SRM tools enable you to quickly see which return codes you received and how to correct them. Return code 37 is issued when there is not enough contiguous space to migrate the data set.

Errors in space management: You can correct errors in space management by changing management class policies, removing undefined DSORG data sets, removing uncataloged data sets, and halting any other unnecessary HSM recall/migration/backup activity. For example, dealing with return code 99, 19, 82 and 37 will buy back quite a bit of productivity. If you receive a return code 37, you can either change the management class to prevent the large data set from going to ML1, or you could increase the amount of space available in the ML1 pool.

Space Management Cycles

, All of these situations create unnecessary overhead, headaches for users and possible legal issues. Review the SMS constructs to determine if the data has the correct management class assigned to the data sets.

If the data sets have incorrect management classes, the data could be deleted before its useful life span is used, it could be retained for too long, or it could be in the wrong location for use (such as always on ML2 tape every time the data is needed). In terms of DFSMS constructs, storage administrators should determine if the data sets are actually going to the proper storage groups to receive the proper HSM management.

Small data sets are the nemesis of HSM. Changing the management class policies for these data sets to let them “live and die” on primary disk is a good idea. Even when using small data set packing (SDSP) files, the constant migration of small data sets to ML1 and then to ML2 tape only to be expired in a short period of time is useless. The process of compacting files when migrating is minimal when compared to the cost of DASD.

For SDSP data sets, take a closer look at when the data migrates and when it expires. It reduces unnecessary migrations and expires, and the recycle of tape volumes.

With increasing pressures to reduce costs, it is important to manage space efficiently and migrate unnecessary data off of the primary DASD. SRM solutions can use application definitions for these user-defined groupings. For example, storage occupancy should be viewed from the perspective of logical groupings, such as departments or applications. DADSM exits (pre- and post-processing exits as well as user-defined exits) enable SRM solutions to monitor space at allocation and deallocation to provide an accurate evaluation of an application’s storage use versus its quota. User-defined search engines can rapidly locate information required for daily space management. SRM solutions gather historical information on pools, volumes, data sets, and VTOCs and display the results.

Features:

Show environment variables as an editable treeAutomatically checking for invalid paths in variablesBackup environment variables to the registry file

Rapid Environment Editor (RapidEE) is a simple environment variables editor.

What’s New in version 3. 2 Build 497:

added: auto-update feature in the “Check for updates” dialog

exe
File Size: 887KB

Download:

The Aqua Liquid cell phone ought to cater to this need, as it features liquid fuel cells technology to help maintain the verdancy of the earth, although it sacrifices efficiency in exchange. Perhaps we should lobby for greener phones instead of handsets that aim to do just about anything and everything. Wish you could go to greater lengths when it comes to keeping the earth green? The Aqua Liquid is full recyclable and is eco-friendly, where the E-Ink display makes sure it sips less power when used and won’t cut you off in the middle of a conversation.

Currently under construction, GATE will begin emitting Galileo signals via six Earth-fixed transmitters in the Bavarian Alps in southeast Germany this spring–several years before Galileo becomes fully operational.

As GATE is a real-time system, it is necessary to feed the navigation message in real-time to the transmitters. Therefore they must be flexible in signal generation and adaptive to changes in signal structure.

The transmit segment comprises six ground-based transmit stations. They are also equipped with stable atomic clocks. These transmitters will emit all frequencies foreseen for Galileo.

Berchtesgaden is surrounded by mountains reaching above 2,000 meters. Test Area. Located in the region of Berchtesgaden in Bavaria, the test area extends over 65 square kilometers, with a core test area of 25 square kilometers. The two monitoring stations are located at an exposed central position within the test area. The establishment of the transmitters on well exposed positions enables signal emission with average elevation angles of 10 to 15 degrees from a user’s point of view.

ground-based ranging test bed at Yuma in the 1970s proved the concept of satellite navigation, no one doubts that Galileo will work from a conceptual point of view. It consists of four segments:

GATE covers three major mission objectives: signal experiments, receiver testing, and user applications. S. However, it is still an ambitious technological project, introducing a signal structure far more sophisticated than the GPS C/A Code. While the U.

The processing facility and monitor receiver were developed by IfEN GmbH.

It monitors navigation signals performs time synchronization of all system clocks, and generates navigation messages and, steering commands to the transmitters. The mission segment consists of two monitoring stations and a processing facility.

First Test Results

Integration tests of the frequency boards are also very promising with respect to performance and functionality. Qualification testing of the splitter showed very good compliance to the specifications. To separate the three frequency bands E5, L1, and E6 from the Galileo/GATE signal spectrum, one single splitter board is required for distributing the Galileo signals to the different GATE frequency boards. All three boards together form a GATE frequency board. The testing of the GATE receiver up to now mainly comprised interface, functional, and performance tests of the front end, signal conversion, and digital baseband board.

The support segment comprises the mobile GATE user terminal with the user receiver, the mission support facility, and the signal laboratory.

It performs the appropriate preparation, that is, simulation and planning of GATE experiments with dedicated software tools, as well as the provision of the user terminals equipped with a combined Galileo/GPS receiver.

Five transmit stations will be set up using already existing infrastructure–TV or mobile phone masts–and one fully autonomous transmit station has been established.

Major building blocks are the control computer, a rubidium reference clock unit, and three mostly identical signal generation units, one for each band, followed by an RF amplifier section.

Except for the voltage controlled oscillator generating the RF carrier frequency, the signal generators are based on identical hardware, providing a high degree of freedom to configure by software according to channel setup requirements. The signal generators developed by Astrium GmbH are designed to generate simultaneously the Galileo navigation signals in the E5,, E6 and L1 bands.

The transmit antenna is a quadrifilar helix antenna with a radom housing and heating capability to ensure de-icing in cold weather.

These tests included performance, thermal, and electormagnetic compatibility testing for the certification process. Formal transmit segment acceptance testing of the signal generator unit, the transmit antenna, and the completely integrated transmit segment rack has been finalized. Based on successful test results, recurring unit and antenna approval were given in September 2006 for the start of system assembly and integration.

It monitors and controls the entire GATE system; hosts and operates the control center, which serves as operational node including mission planning; hosts and provides GATE system time; and archives GATE mission data.

The control segment includes the monitoring and control facility, the archiving and data server, and the time facility.

The monitor antenna is also based on a quadrifilar helix design. During unit testing, the complete receiver antenna was measured in an anechoic chamber with respect to gain and voltage standing wave radio characteristics, comprising also the utilized low noise amplifier (LNA).

The LNA was designed to withstand hard electromagnetic environmental conditions and spurious emissions, since both GATE receiver antennas will be mounted on a large telecommunication mast, housing different mobile phone providers and emitting antennas. The receiver qualification tests showed good compliance of the antenna design and characteristics to the specification.

Staff must dependably send and receive email and wireless messages, refer to records and attachments, and access calendars and contact information.

surplus Exchange servers and storage arrays); unnecessarily complex processes; and, excessive administrative overhead. Because enterprises typically grow in a piecemeal fashion, the result is often disconnected and/or duplicated infrastructure (e. g.

Network-level failures can be averted by deploying failover and multipathing services that provide Exchange servers with multiple paths to storage, with server traffic intelligently rerouted to an available path for business continuity.

How to better handle this situation? Today’s IT professionals have a wealth of solutions at their fingertips to help implement best practices for optimizing Exchange environments.

The key is to make the right choice–a comprehensive solution that delivers the entire gamut of storage services is needed so that you are not left with niche solutions, adding more work and frustration instead of alleviating it.

* Disk mirroring for data redundancy

Microsoft Exchange is specifically designed to deliver high-volume collaboration capabilities and fast transaction rates. Yet because Exchange is so widely used, its storage can be especially challenging to manage effectively.

Disaster Recovery That Works

Exchange administrators cite capacity management as their biggest problem. Their Exchange environment can host hundreds or thousands of active mailboxes, multiple servers, and terabytes of constantly growing email storage capacity.

* Impactless backup that can be completed within the backup window and doesn’t burden Exchange servers.

Services should include:

The result is inevitably inadequate protection from disk-, cabinet-, and network-level failures that sabotage data availability. Strong business continuity tools can enhance a typical Exchange environment. Even if one or more niche data protection solutions have been implemented chances are they are only providing a portion of, the necessary protection.

* Remote data replication for disaster recovery

Exchange administrators can dynamically carve and, provision capacity from this storage pool on an as-needed basis with just a few mouse clicks at an easy-to-use, centralized console.

The underlying disk interfaces are hidden, and all storage provisioning and storage services for an unlimited number of heterogeneous application and file servers can be controlled from this console.

Recovery must always be fast and accurate, even after disaster.

As message volumes and file attachments consume gigabytes of disk space, Exchange administrators are left struggling with this onslaught of data. Backup times increase relentlessly, compounded by regulatory compliance, where email messages must often be stored for lengthy periods of time.

A comprehensive solution should offer a capacity-on-demand storage service that automatically prevents out-of-space conditions by monitoring disk space consumption and providing proactive, just-in-time capacity provisioning, as well as using virtualization to leverage and repurpose existing storage and know-how. “

In this storage model, capacity management is easier because all disk resources are joined into a “storage pool.

* Multipathing for protection against network node failures

In today’s 24X7 business environment, to maximize availability and business productivity, a practical storage solution for messaging/collaboration data needs to deliver advanced storage services that protect data and improve its accessibility.

This way, a disk containing Exchange data can be mirrored to a second disk, which may reside on the same or on a different storage array of a different vendor/type/interface, providing a layer of cabinet redundancy over and above the RAID redundancy at the disk drive level. To protect against disk failure, look for a solution with synchronous and asynchronous mirroring capabilities to create redundant data sets. The disk subsystems themselves can be located in different locations to protect against a localized disaster.

* Point-in-time snapshots for rapid, – granular, non-disruptive recovery of individual mailboxes and entire data stores

There’s constant demand for more capacity to store emails/attachments–and to store them longer to comply with regulations such SEC 17a-3 and SEC 17a-4-which can lead to last minute purchasing of disk, manual reconfiguration of physical disk resources, and wasted storage capacity due to overprovisioning.

Another problem for administrators is Exchange servers running out of disk space.

Achieve High Availability

Simplify, Centralize Storage Infrastructure and Management

It is crucial to choose a storage infrastructure solution that delivers a remote replication service providing automated off-site data protection.

Administrators should be able to specify a variety of policies to control the replication process, giving them a granular and flexible mechanism for keeping an extra set of data off-site for rapid recovery.

Apple has filed a patent for a dynamic volume adjustment system which is based on one’s surroundings instead of the traditional route taken by other sound sensors which is based on music. Guess the future will be more exciting then, eh? The system will not impose its views on you by sticking to its own preferences, but will also check out what your choices for the volume is when setting the sound level.

And ‘your first time here?

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RAMRush is an entirely free, so freeware is dedicated to the efficient management of RAM in a Windows environment: it can be used to prevent System crashes and to increase the speed of your PC automatically freeing up RAM when it is particularly “under stress”, without then having to restart the PC.
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With the push to go green getting stronger and stronger these days, it makes perfect sense for something like the Eco Kettle to be released. 95 Eco Kettle ought to get you whistling for one. This unique home appliance comes with a central reservoir that allows you to keep filled to the brim, alongside a central valve button in the lid which will release the amount that you need into its boiling chamber. Estimates point that the majority of us use double the amount of water than we need when we boil the kettle, which in turn results in twice as much energy and time. Well, this isn’t too much of a problem if you boil your drinking water – just let it cool down and drink the remainder later on, but for folks who don’t mind taking water straight from the tap, the 29. This varies from one to eight cups, helping you save electricity, time and even water in the process.