Article

Storage Smarts #16

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Storage<META content="text/html; charset=iso-8859-1"http-equiv=Content-Type> <META content="searchStorage editors" name=Author> <META content="MSHTML 5.00.2920.0" name=GENERATOR></HEAD> <body><b>Were you correct? This week's answer is:</b> <br>c. RAID-3 <p><b>Learn more:</b> <p></p><!-- BEGIN: inline registration form --> <div id="inlineRegistration"> <ul> <style> .inlineReg_new form input {width:250px;} .inlineReg_new .inlineRegHeader h4 {font-size:19px} </style> <style> #inlineRegistration .inlineRegHeader h4 {float:left;font-size:21px;margin:0;overflow:hidden;} #inlineRegistration .callToAction {float:right;} #inlineRegistration .callToAction a {background:none;text-transform:none;text-indent:0;text-align:center;text-decoration:none;color:#333;font-size:12px;font-weight:bold;height:17px;padding:0 5px;width:59px;border:1px solid #999999; background-color: #cccccc; background-image: -webkit-gradient(linear, 0% 0%, 0% 100%, from(#efefef), to(#cccccc)); background-image: -webkit-linear-gradient(top, #efefef, #cccccc); background-image: -moz-linear-gradient(top, #efefef, #cccccc); background-image: -ms-linear-gradient(top, #efefef, #cccccc); background-image: -o-linear-gradient(top, #efefef, #cccccc); filter: progid:DXImageTransform.Microsoft.gradient (startColorstr=#efefef, endColorstr=#cccccc,gradientType='0');} #inlineRegistration .callToAction a:hover { background-color: #cccccc; 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return vRequired(this,ce,"Please enter your Email Address") && vEmail(this,ce,"");' /> </fieldset> </form><ul style="margin-left:140px"> <li class="inlineRegFormFooter"> <p>By submitting you agree to receive email communications from <br>TechTarget and its partners. <a href="http://www.techtarget.com/html/privacy_policy.html" target="_blank">Privacy Policy</a> <a href="http://searchstorage.techtarget.com/about/copyright" target="_blank">Terms of Use</a>.</p> </li> <li class="safeHarbor"> <img src="http://cdn.ttgtmedia.com/rms/onlineImages/inlineReg_Test4_safeHarborLogo.png" border="0" alt="Safe Harbor" width="75"></li> </ul> </div> </div></ul> </div> <!-- END: inline registration form --> <div id="adPsl" class="splash adSplash on"> <div id="vendorOffer"><script type="text/javascript">GPT.display("vendorOffer");</script></div></div> <img src="http://cdn.ttgtmedia.com/rms/ux/digitalguide/images/spacer.gif" width="1" height="900" /> <p><p></p><a href=http://searchstorage.techtarget.com/sDefinition/0,,sid5_gci214332,00.html>RAID-3</a>: This type uses striping and dedicates one drive to storing parity information. 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 17:19:09 Sun Apr 20, 2014 , by vappma12.techtarget.com --> <!-- ItemRegion, searchstorage.techtarget.com, generated at 17:19:09 Sun Apr 20, 2014 , by vappma12.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-Brings-Private-Storage-to-Amazon-Web-Services">NetApp Brings Private Storage to Amazon Web Services</a></li> <p> Sponsored by NetApp</p> <li><a href="http://searchstorage.techtarget.com/NetAppSponsoredNews/Five-Strategies-for-Using-Flash-in-Your-Next-Storage-Project">Five Strategies for Using Flash in Your Next Storage Project</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> </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">RAID (redundant array of independent disks)</a></li> <li><a href="http://searchstorage.techtarget.com/definition/disk-cache">disk cache</a></li> <li><a href="http://searchstorage.techtarget.com/definition/RAID-rebuild">RAID rebuild</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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