Download Highly available storage for Windows servers by Paul Massiglia PDF

By Paul Massiglia

ISBN-10: 0471264776

ISBN-13: 9780471264774

The 1st how-to consultant for on-line garage administration with home windows 2000
during this e-book, specialist Paul Massiglia first offers a transparent instructional at the rules of controlled on-line garage after which walks you thru the fundamentals of ways to control your disks and RAID arrays within the home windows 2000 server setting. He presents the entire info approach directors have to make the most of home windows 2000's strong new features for dealing with huge numbers of disks and RAID subsystems. utilizing either the embedded features of the home windows 2000 working method, VERITAS quantity Manager--the de-facto commonplace for program storage--and different operating examples, Massiglia essentially illustrates how one can manage disks in order that all program information should be given the correct stability of availability, I/O functionality, and on-line garage rate. Readers will know about on-line garage architectures, failure and non-failure tolerant volumes, RAID, on-line disks, and growing and coping with volumes.

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The improved performance of data striping comes with a constraint on capacity expansion flexibility. Host-based striped volumes are also useful for aggregating the capacity and performance of failure-tolerant virtual disks presented by RAID controllers. 10 illustrates this application of volume manager striping. In some instances, it may be beneficial to aggregate the failure-tolerant virtual disks presented by RAID controllers into larger volumes for application use. The large, high-performance, failure-tolerant volume presented to the file Volumes That Are Not Failure Tolerant 43 File Sysytem Large High-Performance, Failure Tolerant Volume Failure-Tolerent Virtual Disk Host-Based Volume Manager Volume manager stripes data across the two virtual disks.

All of a striped volume’s subdisks’ blocks correspond to volume blocks and are available for storing user data. Striped volumes are also (more properly) called striped arrays, or stripe sets. Striped Volumes and I/O Performance Striped volumes are used primarily to enhance I/O performance in two broad classes of I/O-bound applications—applications whose performance is determined primarily by the speed with which its I/O requests complete, rather than the speed with which it can process data. I/O bound applications fall into two classes: I/O request-intensive.

Temporary data might include intermediate computational results (compiler or linker temporary files, for example), low-grade read-only or “read-mostly” 42 CHAPTER THREE Volume Manager Read Volume Blocks 0–11 Read Volume Blocks 12–23 etc. One request for Application Disk A' (File System) Blocks I/O Load 0-7 One request for Disk B' Blocks 0-7 Disk A' One request for Disk C' Blocks 0-7 Disk B' Disk C' SubDisk A SubDisk B SubDisk C Volume Block 000 Volume Block 004 Volume Block 008 Volume Block 001 Volume Block 005 Volume Block 009 Volume Block 002 Volume Block 006 Volume Block 010 Volume Block 003 Volume Block 007 Volume Block 011 Volume Block 012 Volume Block 016 Volume Block 020 Volume Block 013 Volume Block 017 Volume Block 021 Volume Block 014 Volume Block 018 Volume Block 022 Volume Block 015 Volume Block 019 Volume Block 023 etc.

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Highly available storage for Windows servers by Paul Massiglia


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