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Storage Smarts #16

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The embedded error checking (ECC) information is used to detect errors. Data recovery is accomplished by calculating the exclusive OR (XOR) of the information recorded on the other drives. Since an I/O operation addresses all drives at the same time, RAID-3 cannot overlap I/O. For this reason, RAID-3 is best for single-user systems with long record applications.</p><br><br> <p>Need help setting RAID levels? <a href=http://searchstorage.techtarget.com/tip/1,289483,sid5_gci788909,00.html>Check out this tip</a> by Rick Cook. <p>SearchStorage expert and data availability maven Evan Marcus recently started a lively discussion on RAID 1+0 vs. RAID 0+1 in the Storage Management forum. <a href=http://searchstorage.discussions.techtarget.com/WebX?msgInContext <!-- CONTENT COMPONENT :200--> <!-- CONTENT COMPONENT :200--> .Ua6EabwKk5R^2@.ee83ce3/396>View this discussion</a>. <p>Jim Booth is our resident storage administration expert. <a href=http://searchstorage.techtarget.com/ateAnswers/0,289620,sid5_tax286188,00.html>View his expert responses on RAID</a> or <a href=http://searchstorage.techtarget.com/ateQuestion/0,289624,sid5_cid401717_tax286188,00.html>ask him a question</a>. <p> <br> <p> </p></body></html><!-- Begin Related Topics (earlier called Tags) include --> <div id="tags"> <strong>Related Topics:</strong> <a href="http://searchstorage.techtarget.com/resources/RAID">RAID</a>, <a href="http://searchstorage.techtarget.com/tags">VIEW ALL TOPICS</a> </div> <!-- End Related Topics (earlier called Tags) include --> <br /> <!-- Begin Dig Deeper: this is above the inline-reg split --> <!-- TMP-RightColTop, searchstorage.techtarget.com, generated at 21:06:27 Tue Jul 29, 2014 , by vappma22.techtarget.com --> <!-- ItemRegion, searchstorage.techtarget.com, generated at 21:06:27 Tue Jul 29, 2014 , by vappma22.techtarget.com --> <div id="relatedContent" class="open"> <h4>More News and Tutorials</h4> <div id="relatedContentShow"> <div class="articleColumns"> <ul class="columnCount2"> <li> <div class="splash columnSplash" id="alsoRead"> <h4>Articles</h4> <ul class="listTypeTooltip"> <li><span class="tooltipText" title="Storage Smarts Answer #16"></span><a href="http://searchstorage.techtarget.com/quiz/Storage-Smarts-Answer-16">Storage Smarts Answer #16</a></li> <li><span class="tooltipText" title="<!-- No Summary Found -->"></span><a href="http://searchstorage.techtarget.com/answer/RAID-across-storage-ports">RAID across storage ports</a></li> <li><span class="tooltipText" title="<!-- No Summary Found -->"></span><a href="http://searchstorage.techtarget.com/answer/EMCs-claims">EMC's claims</a></li> <li><span class="tooltipText" title="<!-- No Summary Found -->"></span><a href="http://searchstorage.techtarget.com/answer/RAID-1-requirements">RAID 1 requirements</a></li> <li><span class="tooltipText" title="<!-- No Summary Found -->"></span><a href="http://searchstorage.techtarget.com/answer/Investigating-SCSI-IDE-RAID-systems">Investigating SCSI-IDE RAID systems</a></li> </ul> </div> </li> <li> <div class="splash columnSplash" id="relatedTags"> <div class="sponsoredArticles"> <h3>Sponsored Articles</h3> <ul> <li><a href="http://searchstorage.techtarget.com/NetAppSponsoredNews/Three-Reasons-to-Update-Your-Next-Storage-RFP">Three Reasons to Update Your Next Storage RFP</a></li> <p> Sponsored by NetApp</p> <li><a href="http://searchstorage.techtarget.com/NetAppSponsoredNews/NetApp-All-Flash-FAS-Arrays-A-Deep-Dive">NetApp All-Flash FAS Arrays: A Deep Dive</a></li> <p> Sponsored by NetApp</p> <li><a href="http://searchstorage.techtarget.com/NetAppSponsoredNews/Put-Your-Snapshot-Copies-to-Work-with-SnapVault-Backup-Software">Put Your Snapshot Copies to Work with SnapVault Backup Software</a></li> <p> Sponsored by NetApp</p> <li><a href="http://searchstorage.techtarget.com/NetAppSponsoredNews/The-Next-Era-of-Data-Storage-Will-Be-One-of-Massive-Scale">The Next Era of Data Storage Will Be One of Massive Scale</a></li> <p> Sponsored by NetApp</p> <li><a href="http://searchstorage.techtarget.com/NetAppSponsoredNews/NetApp-Data-ONTAP-Is-Now-the-Industrys-No-1-Storage-OS">NetApp Data ONTAP Is Now the Industry’s No. 1 Storage OS</a></li> <p> Sponsored by NetApp</p> </ul> </div> </div> </li> </ul> </div> </div> <div id="relatedContentHide"> <div class="articleColumns"> <ul class="columnCount1"> <li> <div class="splash columnSplash" id="relatedGlossaryTerms"> <h4>Related glossary terms</h4> <p class="columnSplashMore">Terms for Whatis.com - the <a href="http://whatis.techtarget.com">technology online dictionary</a></p> <ul class="listTypeBullet"> <li><a href="http://searchstorage.techtarget.com/definition/hard-disk">hard disk</a></li> <li><a href="http://searchstorage.techtarget.com/definition/RAID-controller">RAID controller</a></li> <li><a href="http://searchstorage.techtarget.com/definition/parity">parity</a></li> <li><a href="http://searchstorage.techtarget.com/definition/hard-disk-drive">hard disk drive (HDD)</a></li> <li><a href="http://whatis.techtarget.com/definition/VHDCI-Very-High-Density-Cable-Interconnect">VHDCI (Very High Density Cable Interconnect)</a></li> <li><a href="http://searchstorage.techtarget.com/definition/disk-striping">disk striping</a></li> <li><a href="http://searchstorage.techtarget.com/definition/hot-spare">hot spare</a></li> <li><a href="http://searchstorage.techtarget.com/definition/RAID-0-disk-striping">RAID 0 (disk striping)</a></li> <li><a href="http://searchstorage.techtarget.com/definition/RAID">RAID (redundant array of independent disks)</a></li> <li><a href="http://searchstorage.techtarget.com/definition/RAID-6-redundant-array-of-independent-disks">RAID 6 (redundant array of independent disks)</a></li> </ul> </div> </li> </ul> </div> </div> </div> <!-- End Dig Deeper: this is below the inline-reg split --> <!-- End of body --> </div> <div id="articleFooter"> </div> <!-- Commenting start --> <div id="comments_v2" data-comment-reference-id="5bc39a36e51e2210VgnVCM1000000d01c80aRCRD" data-comment-count-config="10"> <div class="sectionHeader"> <h4 class="title">There are <span class="total"></span> Comments. 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