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According to SearchStorage.com expert and author of Storage Area Networks for Dummies Christopher Poelker, SANs have changed the way we think about managing storage: "Before SANs, and with the exception of mainframe storage, most enterprise storage management consisted of an application provider complaining to the datacenter operations staff that their system just crashed due to insufficient storage space. The application manager would try to delete as many un-needed files as possible and bring the server back up until the operations staff could add more disk space (if possible). "Does this sound familiar to anyone? "This is why SANs, with their centralized pools of professionally allocated storage, have been such a boon to business. No more planned downtime to add more disks, no more system crashes due to storage deficiencies. Everything is now always backed up and managed, and in some cases, even highly available or disaster tolerant. Where it used to take many operations staff with knowledge of many different OS platforms and server types, can now be done by a single SAN manager with good SAN management software. It's all about doing more with less these days." Here are the straight FAQs about SAN management.
Managing your SANs is never easy. This chapter looks at how users are dealing with capacity growth, scaling SANs, connectivity basics and some best practices for keeping your SANs properly managed. It's always good to know what you are getting yourself into, SearchStorage.com storage management expert Brett Cooper dives right into help you understand what it's going to take to manage your storage network. What makes SAN management so difficult and why is this form of management so different from anything you may have done in the past? You can never have enough SAN management, or can you? How much storage management is enough? Webcast break: Webcast break: Webcast break: It's important not to forget the "network" part of storage area networks. Here are a few links that can help you understand Fibre Channel and other SAN connectivity options. And, before you get too deep into your SAN planning, it's important to understand where SANs are headed in the next few years. Plan accordingly with these tips and advice... Storage magazine extras: "Why SANS still aren't simple" -- Jon Toigo, March, 2004 "Slash SAN costs " -- Marc Farley, March, 2004 "Is storage management software worth it?" -- Alan Radding, April 2003 "Management suites come up short" -- Jerome Wendt, June 2003 "Making sense of the bewildering amount of storage management products" -- Stephen Foskett, Oct. 2003 "Best Practices: Review of EMC ControlCenter. Does it live up to its claims?" -- Darryl Brooks, June 2003 "Best Practices: Review of Veritas SANPoint Control and compared with EMC ControlCenter" -- Darryl Brooks, July 2003 "SAN holdouts" -- Jeff Moad, Sept. 2003 "The best way to scale SANs" -- Stephen Foskett, Aug. 2003 Getting started with storage management? Check out these continually updated sections on SearchStorage.com: Effective management of a SAN starts with a gold-star design. If you go about architecting your SAN incorrectly from the start, you are going to run into major problems down the road. You've explored a lot of the aspects of planning, now put them to use with the information in this chapter. It's probably good to start understanding SAN design with the KISS cliché -- keep it simple stupid! SAN design can get a bit dicey but in the early stages, so it's often better to keep it simple. Also, to get you started here are seven steps for building and scaling SANs. A good place to start is by looking at the basic building blocks of a SAN, this "guide within a guide", called Building a SAN from A to Z, was assembled to help answer these questions: How large a SAN can or should you build? What overriding framework will you use to manage the SAN? Which type of switch and HBA driver is best for your environment? Should you consider a SAN/NAS hybrid? Also, which networking protocol is best for your environment? This guide can also help you learn how to ignore vendor hype. Design concepts for storage networks In the storage networking space today, a finite number of architectures exist. Yet few definitions exist as to the types of storage networking architectures available. In this short SearchStorage.com series, super user and Storage magazine columnist Jerome Wendt discusses six possibilities for how to design your storage networks: 1. Introduction 2. Out-of-band ESCON 3. In-band ESCON 4. Out-of-band telecom 5. In-band telecom 6. In-band ESCOM Webcast break: Webcast break: Webcast break: Webcast break: It's been said that the switch is the heart of a SAN. So, it would make sense that the health of your switches would also dictate the health of your network. Managing that network is key in avoiding heart problems. Proper management of switches can be traced back to selecting the right switch for your environment. There are two main types of switches, modular and director. Both of these have distinct differences that you need to be aware of when designing your systems. This two-part series also further explains how traffic flows in switches, directors and hubs. (Also see: Switches and hubs, do they function the same?) Discuss switch management with your peers in ITKnowledge Exchange.
Additional switch management advice and tips: Storage magazine extras: Next-gen switches -- Arun Taneja, Oct. 2004 SAN switch smarts -- Jerome Wendt, Aug. 2004 Bridging SAN islands -- Jerome Wendt, May 2004 "The pitfalls of smart switches" -- Jeremy Wendt, December 2003 "Is there a need for more speed?" -- Jeff Moad, December 2003 "New directions for switches" -- Jeremy Wendt, November 2003 "Intelligence sprouts in the storage network " -- Alex Barrett, April 2003 "The case for network smarts" -- Alex Barrett, June 2003 "Intelligent switches to get common API" -- Alex Barrett, Aug. 2003 For all your SAN needs, attend SAN School...
Storage area networks have proven themselves a boon to IT managers, but mastering the nuances of SAN implementation and troubleshooting is often another story. Until now... SearchStorage.com is excited to announce the most comprehensive online storage area network (SAN) learning tool -- SAN School. But, unlike advanced college courseware, you can forget about taking out a second mortgage or waking up early for a final exam. Heading back to our school for an advanced SAN degree is free and available at any time. The curriculum: For a syllabus, click here. Good SAN management is not all about hardware and software. Policy and procedure are key in maintaining quality management. But, first you need to define your storage management process, policy and priorities. Webcast break: Webcast break: Webcast break: Storage magazine extras: "SAN pioneer: Start small, but smart" -- Eric Ihde, Jan. 2003 "The best way to scale SANs" -- Stephen Foskett, Aug. 2003 "The networked storage project: moving ahead" -- Jeff Fritz, Jan. 2003 To understand which tools are best for your environment, GlassHouse Technologies Senior consultant Stephen Foskett believes it makes more sense to look at storage management from a different perspective and really evaluate the requirements of your business. One way to do so is to ask such questions as, "What tasks do I need to perform?" and "How will this product help me?" Esentially, Foskett thinks it's crucial to align storage management tools with operational processes. These questions will also help you choose the right storage management console.
One major slice of the tools available to you will be SRM tools. According to Norbert Haag, "this software will help you gather the data, identify it and get a report detailed enough to take action. However SRM software only reveals the information but doesn't take any automated action like deleting or moving files, so you need to either write some scripts or make it a manual task." But, which SRM tools are right for your organization? And where are the SRM tools in the storage industry headed? SRM can also help ease capacity planning pain. But, watch out for some new pricing models. Webcast break: Storage magazine extras: "Get control of capacity" -- Jerome Wendt, April 2004 "Management suites come up short" -- Jerome Wendt, June 2003 "The case for network smarts" -- Alex Barrett June, 2003 "Best storage products of 2003" -- SearchStorage.com and Storage magazine editors, Jan. 2004 "Can tools streamline provisioning?" -- Jerome Wendt, Aug. 2003 "Firm sees the storage automation light" -- Alex Barrett, March 2003 "Can tools streamline provisioning?" -- Jerome Wendt, Aug. 2003 "The trouble with measuring SAN performance" -- Jerome Wendt, Oct. 2003 "Best Practices: Keeping your eyes on your devices" -- Darryl Brooks, May 2003 "SRM vendors set sights on secondary storage" -- Alex Barrett, Aug. 2003 There are a few unanswered questions hanging out there. What is the Matrix? How do they figure out expiration dates on milk? And, of course what is virtualization? More and more virtualization is being defined and actually implemented by storage managers. So, how do you go about choosing a good SAN virtualization solution? You also need to know what types of virtualization are available and who the players are in the virtualization space. Additional virtualization tips: Storage magazine extras: Servers meet storage, virtually -- Alex Barrett, July 2004 "Virtual SANs put to the test" -- David Braue, July, 2003 The case for network smarts -- Alex Barrett, June, 2003 "Honestly, do you really know what storage virtualization is?" -- Charles T. Clark, June 2002 "Ten things you can do with virtualization" -- Alex Barrett, Jan. 2003 "Virtualization in the switch? Not so fast" -- Marc Farley, Feb. 2003 Now that you have traversed the rest of the SAN Management fast guide you are ready for your black belt. To bring your SANs to the next level take a look... Get in the zone:Webcast break: Provision that: Our experts get advanced --Prepare for future trends in storage management --What is masking? --iSCSI, FC, zoning and speed --SAN storage configured and attached -- Is not the time to invest in storage automation products? -- Can you use normal LAN IP switches as the SAN layer using iSCSI Storage magazine extras: SATA II Doubles Disk Speed to 3Gb/sec -- Alan Radding, Oct.2004 "Best practices: How Brocade's XPath Technology can change your life" -- Darryl Brooks, Jan. 2004 "The pitfalls of smart switches" -- Jerome Wendt, Dec. 2003 "Make HSM work for open systems" -- Ed Palmer, March 2003 "Integration: Is HSM ready for open systems or has is it had its day?" -- James Damoulakis, May 2003 "Virtual SANs bring order to chaos" -- Marc Farley, April 2003 "Virtual SANs put to the test" -- David Braue, July 2003 "Shared file systems: a mixed blessing" -- Benjamin Kuo, May 2003 "Best Practices: Keep your SAN secure through zoning" -- Darryl Brooks, April 2003 "Process and infrastructure to safeguard your pooled data" -- Stephen Foskett, June 2003 "Clustering tapped to solve storage challenges" -- Alex Barrett, Oct. 2003 "Best Practices: Four protocols for long-distance SAN traffic" -- Darryl Brooks, Oct. 2003 You've come this far, why not go a little further? This section highlights some of the important peripheral aspects of SAN and storage management that may have an impact on how you buy, implement and configure your systems. Where storage management standards stand: | |||||||||||||||||||||||||