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Manage

Learn to apply best practices and optimize your operations.

• Three requirements for a hybrid cloud computing deployment

  As the hybrid cloud computing approach gains steam, organizations will need to pay close attention to cross-cloud connectivity and management, plus microservices. Continue Reading

• With Btrfs file system gone in RHEL 8, look at alternatives

  In the XFS, Ext4, Btrfs and ZFS comparison, Linux users will say goodbye to Btrfs in RHEL 8. Learn more about your options and what can fill the gaps once development halts. Continue Reading

• How to choose a live kernel patching extension

  Ksplice and kpatch offer similar live kernel patching services on a Linux system, but differences between function-level services and technical support showcase their differences. Continue Reading

• Follow these steps to assign vSphere permissions and roles

  Admins can use vSphere permissions to assign VM controls to different IT groups within their enterprise. Follow the networking example below to get started. Continue Reading

• What should my dimensions be for a data center building design?

  Don't get hung up on data center dimensions in the design phase. Focus on length-to-width ratios to get the most out of data center space, power and cooling. Continue Reading

• Five data center certifications admins need to know

  Data center certifications, including those from VMware and Cisco, can provide a career boost for admins. Consider taking one of these five exams to expand your knowledge.Continue Reading

• When moving servers to a colocation facility, planning is key

  Moving servers off premises to a colocation facility can be a daunting task. Use these best practices to minimize downtime to ensure a seamless transition.Continue Reading

• How do I convert CPU hours to MIPS for mainframe capacity planning?

  For better mainframe capacity planning, how do I convert CPU hours to MIPS? And is there a way to calculate the relationship between MIPS and MSUs?Continue Reading

• Draw up a data center network diagram you'll actually use

  Creating a data center network diagram is time-consuming but necessary work. Keep the scope narrow and know the priorities of your diagram to save time and energy.Continue Reading

• Ten server deployment checklist considerations

  Use this server deployment checklist to make sure you've covered all your bases. From power distribution outlets to available network connectivity, server deployment can be an arduous process.Continue Reading

• The Linux ip command makes network config easy

  The Linux ip command makes monitoring a Linux network configuration easy, but you need to know what to look for.Continue Reading

• Data center metrics and standards guide

  From energy use to server performance, data center metrics form a foundation for improving IT operations.Continue Reading

• Data center humidity recommendation falls dramatically

  An ASHRAE study's conclusions are disproving the conventional wisdom around data centers' relative humidity levels.Continue Reading

• How do you verify a HA server or cluster is working?

  I want to ensure server high availability in my production IT environment. Is it better to test server HA and risk disruption, or trust in the systems' reliability?Continue Reading

• Server performance and benchmark testing guide

  The right back-end servers, tuned for maximum efficacy, make the difference in business-critical applications and services.Continue Reading

• Build Linux from scratch to improve admin skills

  There's a sure-fire way to increase your knowledge about the Linux kernel and how to troubleshoot Linux servers: Build one yourself.Continue Reading

• Checklist of IT KPIs for responsive data center ops

  The right metrics, aligned with business needs, strengthen data center monitoring and capacity planning. KPIs orient IT performance to specific goals.Continue Reading

• Cutting data center power costs

  Reining in energy costs is one of the top concerns for data center managers everywhere. And since power consumption represents a significant cost for organizations, data center managers need to have solutions in mind when they get called into ...Continue Reading

• Take data center efficiency to the max on three-phase power

  Three-phase circuits provide considerably more power efficiency to data center equipment, but phase balancing can trip up deployments.Continue Reading

• Master Linux service management on System V and systemd

  Managing services on Linux is an essential task for administrators. Learn to work with either System V or systemd.Continue Reading

• Can you virtualize a NetBackup master server?

  I have only seen companies deploy a NetBackup master server on a physical server. Are there any drawbacks to using a VM as a NetBackup master server?Continue Reading

• Big data and analytics advice from an operations pro

  You don't need to employ special IT personnel for big data analytics. One company uses big data for developers to modify ads and find and adjust pain-points in a game application.Continue Reading

• This data center cost calculator keeps you on budget

  Calculating every data center expense can be challenging, but with the right spreadsheet -- and formulas -- you will accurately assess the total cost.Continue Reading

• Data center maps lead IT to server treasure

  Can't find the server that needs repairs or the right reboot button when the host blue-screens? A data center map is vital when disaster hits.Continue Reading

• What's the best way to measure data center airflow?

  You can't measure airflow from raised floor tiles in the same way as any other air duct. Optimize data center airflow with the right tools.Continue Reading

• Server form factors: A guide to rackmount, blade servers and more

  Which type of server is right for you? The data center's budget, technology and reliability will steer you toward rackmount or blade servers.Continue Reading

• Create a SAN with the Linux LIO iSCSI target

  With the LIO iSCSI target service, Linux shops have an affordable SAN option that ranks up there with expensive proprietary storage solutions.Continue Reading

• How well do you know the ITIL v3 framework?

  Test how well your team knows its roles and responsibilities with this ITIL quiz. It might help you handle future IT service problems.Continue Reading

• Business application hosting on-premises vs. cloud options

  Is it better to look for a SaaS version of an app, put it in your own data center on existing equipment, or host it at a cloud provider for a mix of flexible scaling and IT ownership?Continue Reading

• Denser is better: Increased storage and server density

  For storage and servers, being dense is good. Careful planning can maximize the benefits of greater computing densities while minimizing potential risks.Continue Reading

• Mount file system Linux systemd's way

  Forget about /etc/fstab and autofs. There's a new Linux system around. Systemd manages mounting and automounting of file systems differently.Continue Reading

• A few ways to configure Linux firewalld

  The method for configuring Linux servers' firewalls changed with RHEL 7 and other new distributions. Learn how to set up firewalld, and what to avoid.Continue Reading

• Controversial hot aisle containment practices

  Is your hot aisle too hot for OSHA? New data center trends are causing concern. You might need to adapt to adhere to the law.Continue Reading

• What to look for in a Tier III data center provider

  Don't believe just any sweet-talking colo provider claiming to be Tier III. Make sure you're getting what you pay for with a true Tier III data center.Continue Reading

• What's the highest server temperature you can handle?

  There's no correct inlet air temperature for all servers. Age, performance and design help determine how much heat your server can handle.Continue Reading

• DevOps and Agile IT save mainframe training from skills quagmire

  The problem isn't that new hires aren't familiar with the complex, custom daily tasks of mainframe ops. The problem is that you're still doing them.Continue Reading

• Is LRDIMM the best memory option for an enterprise server?

  Load-reduced DIMM allows for more memory and decreased latency than on-server memory typically has. So how does it compare to other DIMM designs?Continue Reading

• Mount Global File System 2, avoid corruption in RHEL High Availability

  You have a working cluster, now what? Red Hat's GFS2 will help you avoid file system corruption. Learn how to mount the default cluster file system.Continue Reading

• Getting started with ITIL service management

  Promised cost savings, alignment with business, and operational efficiency are encouraging more organizations to take up ITIL service management.Continue Reading

• Unix command line quiz

  Do you know how to move a file or get a list of current users from your Unix servers? Take our Unix quiz on essential commands for system admins.Continue Reading

• Six steps to create a highly available Apache Web service

  When a Red Hat cluster goes into production, you can protect it by configuring a supported high-availability service. Here's how.Continue Reading

• Basic Linux commands for new Linux server administrators

  To manage Linux servers, administrators need a set of basic commands to view and start processes, as well as utilities that make life a little easier.Continue Reading

• What should you do with old servers and outdated data center equipment?

  Complications arise when replacing nonfunctional data center equipment. Decide what to do with the old equipment and how to handle retrofits.Continue Reading

• Five best Linux applications for enterprises

  These five applications will improve the lives of enterprise IT and business management by increasing functionality and reducing costs.Continue Reading

• Creating a quorum disk and fencing for Linux high availability nodes

  The quorum disk and fencing on a Linux high availability cluster let its nodes know when they are operational and shut them off if they are not.Continue Reading

• Major changes in data center fire suppression standards NFPA 75 and 76

  Fire standard changes can add a lot of work and expense to a data center operator's job, but the updates to NFPA 75 and 76 address real safety risks.Continue Reading

• How to prepare a server cluster for Linux high availability

  With a Linux distribution supporting mission-critical business applications, it's time to set up Linux high-availability software.Continue Reading

• Physical building properties to evaluate during server room design

  Does your server room have space to grow? What's the best mechanical system for it? Start with these questions to develop a good server room design.Continue Reading

• A new troubleshooting and management process with GRUB2 bootloader

  Nearly everything changed from the GRUB bootloader to GRUB2. With major enterprise Linux distributions moving to GRUB2, it's time to get acquainted.Continue Reading

• Building with modern data center design in mind

  Modern data center design involves planning carefully for the center's location, hardware and building infrastructure. It's certainly not as simple as "build warehouse, insert computers."Continue Reading

• Five data center upgrade strategies to modernize your facility

  These five data center upgrade strategies can revitalize older data centers and stave off expensive construction projects.Continue Reading

• Does UPS maintenance go to IT or the facilities management team?

  The UPS is the last line of defense for keeping your data center alive, but does its care fall to the facilities management team or IT?Continue Reading

• Tweak Linux swap to improve server performance

  Many administrators ignore or underutilize the Linux swap settings but making the proper adjustments will make for better system performance.Continue Reading

• FM-200 systems: What data center managers need to know

  Get the lowdown on using FM-200 systems for data center fire suppression, and whether or not they're a good choice for your company.Continue Reading

• Server performance and benchmark testing guide

  This guide includes tips from our data center experts to help you improve your testing practices and squeeze more performance out of your machines.Continue Reading

• Get the right applications to manage your system

  This guide will help administrators find the best way to provision, monitor and manage the performance of virtual workloads across the data center.Continue Reading

• Best practices for maintaining a data center CRAC unit

  A CRAC unit failure could often have been avoided through preventive maintenance and correctly sizing cooling infrastructure.Continue Reading

• Transaction and database management on z/OS mainframe systems

  Transaction and database management tools for mainframe systems, such as CICS, IMS and DB2, have been around for decades, but have evolved over the years to fit the needs of enterprise customers.Continue Reading

• What to look for when conducting benchmark tests with PerfMon

  Microsoft's PerfMon benchmark tests measure a wide range of processes and server aspects, but it can be difficult for IT professionals to understand the numbers and interpret the results.Continue Reading

• Creating RPM packages in Linux

  RPM software management on Linux systems truly has an advantage when you create your own RPM packages. Learn how to use the enhanced vim option to automatically generate a template file after creating a new RPM file with the .spec extension.Continue Reading

• Data center management for geographically split data centers

  Geographically split data centers can reduce disaster recovery time to zero, but splitting data centers requires an intelligent network and savvy data center management.Continue Reading

• Virtualization and management classroom 201 quiz

  This brief quiz on server virtualization tests your knowledge of virtualization platforms, management tools and virtualized infrastructure performance.Continue Reading

• Working with Linux file system attributes

  File system attributes can provide a valuable addition to the way you ensure security on your Linux server. Learn how to mount, list and change file system attributes in ext4.Continue Reading

• RHEL 6 ditches System V init for Upstart: What Linux admins need to know

  System V init is fading to a memory in Linux boot systems as the new Linux disdribution releases, such as Red Hat Enterprise Linux 6, switch to using Upstart. Learn what is different with this boot service and how to work with it to get your Linux ...Continue Reading

• Cisco et al. push memory-dense servers; but at what cost?

  Today’s x86 servers offer impressive memory densities, but some IT shops want even more.Continue Reading

• Setting up a syslog server in Linux

  A central logging server can make it easier to manage logs. In this tip, learn how to collect and centralize syslog messages from your hosts onto one syslog server in Linux.Continue Reading

• Optimizing Linux swap space usage

  Today's powerful servers with plenty of RAM can make swap space seem like a thing of the past, but knowing how much you need can help keep your system running smoothly.Continue Reading

• Installing the ModSecurity Web application firewall on Red Hat Enterprise Linux

  Learn how to set up the ModSecurity Web application firewall on Red Hat Enterprise Linux 5.4 and Apache Web server 2.2.x. This firewall monitors access to Web servers to ensure that requests are valid and not malicious.Continue Reading

• How to install Webmin and ease data center server management

  In this introduction to Webmin, learn how the tool can make it easier to manage Unix and Linux servers in your data center. An expert describes how to install Webmin and get started with this free systems management tool.Continue Reading

• Developing a successful mainframe migration strategy

  A successful mainframe migration strategy requires careful planning to avoid disruption to end users. This tip discusses best practices for migrating, regenerating or replacing mainframe applications.Continue Reading

• Troubleshooting Linux boot problems

  If your Linux server fails to show the login screen at startup, you have a boot problem. Learn some tricks on how to diagnose and fix a Linux server boot problem from Grub failure to init and runlevels.Continue Reading

• Capacity planning tools tutorial for Linux and Unix

  Effective capacity planning is a proactive way of ensuring that your data center servers will not prematurely run out of space or horsepower. Learn the tools available to help you, both native to Linux and Unix platforms including Solaris, Red Hat, ...Continue Reading

• Air flow management strategies for efficient data center cooling

  To achieve efficient data center cooling, you must reduce your facility's air flow waste. In this tip, an expert outlines air flow management strategies and best practices that can improve data center air flow, including the installation of blanking...Continue Reading

• Using CICS dump tables to manage problems in online systems

  The CICS dump table feature, which maintains tables for transaction and system dumps, can be useful for diagnosing and managing problems in online systems when the information you need isn't available through default channels.Continue Reading

• Manage CICS workloads with transaction classes

  Using transaction classes is a great way to manage CICS workloads that come in varying or unpredictable increments. Learn how to define transaction classes, calculate a maximum active number and get examples on how to use transaction classes in this...Continue Reading

• Using z10 HiperDispatch for vertical CPU management

  The new HiperDispatch feature for the IBM z10 mainframe manages CPU vertically instead of horizontally. This new feature could boost performance on large transactional workloads.Continue Reading

• Improving data center cooling capacity with chilled water plants

  With a chilled-water plant, you can improve your data center cooling capacity and possibly prevent more drastic measures, such as having to build a new facility.Continue Reading

• intelligent power management (IPM)

  Intelligent Power Management (IPM) is a combination of hardware and software that optimizes the distribution and use of electrical power in computer systems and data centers. While the installation of IPM involves up-front cost and ongoing ...Continue Reading

• Oracle on RHEL 5: Installation and configuration

  Install and configure Oracle 10 on RHEL 5. This tip shows how to set up a database with Oracle's Database Configuration Assistant (DBCA) and Oracle Enterprise Manager.Continue Reading

• CICSPlex System Manager basics

  In this brief overview of CPSM, CICS expert Robert Crawford describes the risks and rewards of using it for system management, automation and workload management.Continue Reading

• Dual booting vs. virtualization: Using Windows and Linux on the same server

  Interoperability between Linux and Windows can be achieved in two ways: one, by installing each operating system separately via dual booting -- which allows both operating systems to run on the same hardware -- and two, by running one system inside ...Continue Reading

• Calculating costs of data center cabling infrastructure

  In part two of our series on data center cabling decisions, data center infrastructure expert Carrie Higbie offers a cost calculator for determining TCO on a cabling project.Continue Reading