{"id":39327,"date":"2019-04-30T09:03:36","date_gmt":"2019-04-30T09:03:36","guid":{"rendered":"https:\/\/www.stellarinfo.com\/blog\/?p=39327"},"modified":"2024-12-27T05:56:09","modified_gmt":"2024-12-27T05:56:09","slug":"important-tips-to-prevent-data-loss-in-a-raid-array","status":"publish","type":"post","link":"https:\/\/www.stellarinfo.com\/blog\/important-tips-to-prevent-data-loss-in-a-raid-array\/","title":{"rendered":"Tips to Prevent Data Loss in a RAID array"},"content":{"rendered":"<?xml encoding=\"utf-8\" ?><?xml encoding=\"utf-8\" ?><p>Anyone may face a <em>data loss<\/em> situation because it can happen in many different ways if we are not careful enough. You may have just recalled one while reading this post. But it&rsquo;s comforting to know that any data loss situation can be avoided with certain <strong>measures,<\/strong> provided you take them on time.<\/p><p>RAID arrays provide redundancy but are susceptible to logical failures. A RAID\narray&mdash;such as the popular RAID 0, RAID 5,\nand RAID 6&mdash;may fail due to various intrinsic and extrinsic factors as follows:<\/p><ul class=\"wp-block-list\">\n<li>Hardware and software failure<\/li>\n\n\n\n<li>Human errors<\/li>\n\n\n\n<li>Malware or Virus infection<\/li>\n\n\n\n<li>Bad Sectors<\/li>\n\n\n\n<li>Disk fragmentation<\/li>\n\n\n\n<li>A sudden power surge or failure<\/li>\n<\/ul><p>However, with these tips, you can easily prevent\ndata loss from RAID arrays: <\/p><h2 class=\"wp-block-heading\" id=\"1.&nbsp;choose-the-right-raid-array-configuration-and-hardware\"><strong>1.&nbsp;Choose the Right RAID Array Configuration and Hardware<\/strong><\/h2><p>Data loss from RAID\nmostly happens due to hardware or software failures, followed by human errors\nand malware attacks. Choosing the right RAID\nconfiguration and RAID hardware controller can help prevent data loss to a large\nextent. <\/p><p>Most popular and\naffordable RAID configurations are RAID 0, RAID 5, and RAID 6. <\/p><p>RAID 0 offers\nhigh speed of data transfer but it lacks fault-tolerance. RAID 5 can withstand failure\nof 1 disk, while RAID 6 can tolerate up to 2 failed disks&mdash;without losing the\ndata. However, read\/write operations are quite slow\non these. Plus, RAID rebuild can take a while and may not be safe for ageing\nor older drives in the array.<\/p><p>Also, hardware controlled RAID arrays are more reliable than software-based arrays, (when no additional CPU is used). The reliability generally depends on all types of RAID, regardless of how it is implemented. However, hardware-based RAID configuration can be significantly costlier than their software or BIOS counterparts.<\/p><p>So choose wisely&mdash;depending on the importance of data.  <\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Scan-raid-disk-for-Bad-Sectors-2-1024x576.png\" alt=\"Scan-raid-disk-for-Bad-Sectors\" class=\"wp-image-39325 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Scan-raid-disk-for-Bad-Sectors-2-1024x576.png 1024w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Scan-raid-disk-for-Bad-Sectors-2-300x169.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Scan-raid-disk-for-Bad-Sectors-2-768x432.png 768w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Scan-raid-disk-for-Bad-Sectors-2.png 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"> <br><em>Figure 1: RAID Level Comparison Chart<\/em> <\/figcaption><\/figure>\n<\/div><h2 class=\"wp-block-heading\" id=\"2.&nbsp;backup-and-test-\"><strong>2.&nbsp;Backup and Test <\/strong><\/h2><p>Taking regular back up of RAID\nis critically important. You can use a regular storage media or cloud to back\nup the RAID volume data. Use Windows File Explorer to transfer the files from\nRAID volume to external drive volume(s) for easy\nbackup. <\/p><p>Cloud backup service providers\nsuch as Google Drive, One Drive, Mega, etc.\noffer desktop utilities that can also automate the RAID backup task. <\/p><figure class=\"wp-block-image is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Tips-Scan-disk-for-Bad-Sectors-1-724x1024.png\" alt=\"Tips-Scan-disk-for-Bad-Sectors\" class=\"wp-image-39326 apply-gradient-on-post-images\" width=\"543\" height=\"768\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Tips-Scan-disk-for-Bad-Sectors-1-724x1024.png 724w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Tips-Scan-disk-for-Bad-Sectors-1-212x300.png 212w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Tips-Scan-disk-for-Bad-Sectors-1-768x1086.png 768w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Tips-Scan-disk-for-Bad-Sectors-1.png 794w\" sizes=\"auto, (max-width: 543px) 100vw, 543px\" \/><\/figure><p>After back up, check the\ndata for file integrity and function (whether data restoration happens as\nintended). In case you are using a backup-software, check the backups created by\nthe utility. <\/p><blockquote class=\"note_alert\">\n<p><em><strong>&ldquo;Don&rsquo;t just assume, test your backups.&rdquo;<\/strong><\/em><\/p>\n<\/blockquote><p class=\"has-very-light-gray-background-color has-background\"><strong>Quick Tip: <\/strong><em>Always encrypt backups or the backup drive for data protection.<\/em><\/p><h2 class=\"wp-block-heading\" id=\"3.&nbsp;invest-in-reliable-and-raid-ready-hard-drives\"><strong>3.&nbsp;Invest in Reliable and RAID Ready Hard Drives<\/strong><\/h2><p>There is a\nsignificant difference between a <strong>standard\nhard drive<\/strong> and a <strong>RAID hard drive<\/strong>.\nHigher quality, higher RPM, and <strong>error-handling\nfeatures<\/strong>&mdash;that takes care of reallocated sectors (bad sectors) &ndash; differentiate RAID ready drive.<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"600\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/prevent-data-loss-in-RAID_ready-drives-1.png\" alt=\"prevent-data-loss-in-RAID_ready-drives\" class=\"wp-image-39330 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/prevent-data-loss-in-RAID_ready-drives-1.png 1000w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/prevent-data-loss-in-RAID_ready-drives-1-300x180.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/prevent-data-loss-in-RAID_ready-drives-1-768x461.png 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n<\/div><p>A normal hard drive can take a while to recover\nfrom a <strong>read\/write error<\/strong> due to the bad sector,\nbut RAID ready\ndrives have faster recovery time, which allows <strong>improved error handling<\/strong> capabilities and lesser disk degradation. <\/p><p>For instance, if you use standard drives in a RAID array, and read\/write error occurs, the disk becomes unresponsive for a while. The RAID controller&mdash;whether hardware or software&mdash;marks such drives as unreliable and prompts the user to replace the drive.  <br>And replacing a drive in RAID arrays such as RAID 5 or RAID 6 is a long process, which <strong>degrades RAID performance<\/strong> and may overheat aging drives, leading to potential failure and data loss. <\/p><h2 class=\"wp-block-heading\" id=\"4.-install-malware-&amp;-virus-protection\"><strong>4. Install Malware &amp; Virus Protection<\/strong><\/h2><p>RAID is a\nlogical drive volume built from a minimum\nof two disks&mdash;whether it&rsquo;s RAID 0, RAID 5, or RAID 6.<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Scan-disk-for-Bad-Sectors-3-1024x576.png\" alt=\"Scan-disk-for-Bad-Sectors-prevention\" class=\"wp-image-39323 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Scan-disk-for-Bad-Sectors-3-1024x576.png 1024w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Scan-disk-for-Bad-Sectors-3-300x169.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Scan-disk-for-Bad-Sectors-3-768x432.png 768w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2019\/04\/Scan-disk-for-Bad-Sectors-3.png 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div><p>Malware and\nvirus can cause <strong>logical and file system errors<\/strong>\nin a RAID array, leading to RAID corruption and failure. Installing a reliable\nmalware software will ensure protection against such cases of RAID failures.<\/p><h2 class=\"wp-block-heading\" id=\"5.-optimize-raid-array\"><strong>5. Optimize RAID Array<\/strong><\/h2><p>Like other hard drives, RAID drives also accumulate <strong>bad sectors<\/strong> and <strong>fragment<\/strong>, which can cause RAID failure.<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"905\" height=\"600\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/02\/SC1-4.png\" alt=\"Stellar\" class=\"wp-image-73829 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/02\/SC1-4.png 905w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/02\/SC1-4-300x199.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/02\/SC1-4-768x509.png 768w\" sizes=\"auto, (max-width: 905px) 100vw, 905px\" \/><figcaption class=\"wp-element-caption\"><em>Figure 2: Bad Sector Scan on a Hard Drive via Drive Monitor<\/em><\/figcaption><\/figure>\n<\/div><p>You can avoid\nRAID failure by optimizing the RAID drives, with the help of these methods:<\/p><ol class=\"wp-block-list\">\n<li>CHKDSK Scan<\/li>\n\n\n\n<li>Windows Disk Defragmentation\nTool<\/li>\n<\/ol><p class=\"has-very-light-gray-background-color has-background\"><strong>Quick Tip: <\/strong>Ensure adequate spacing between RAID drives and proper ventilation around the RAID hard drives to prevent damage due to overheating.<\/p><h3 class=\"wp-block-heading\" id=\"h-6-install-device-driver-os-and-software-updates\"><strong>6. Install Device Driver, OS and Software Updates<\/strong><\/h3><p>In tip<strong> #1<\/strong>, we mentioned hardware and software failure being the most common reason for data loss in RAID. But updating the device drivers, installed software, and OS to the latest stable release can prevent RAID data loss.<\/p><p><strong>Software and OS updates<\/strong> fix the existing bugs and improve the overall system performance and reliability. So, if you wish to prevent data loss in RAID array, keep the software, drivers, and OS updated.  <br>Also, <strong>never install beta releases<\/strong>!  <\/p><h3 class=\"wp-block-heading\" id=\"h-7-rebuild-raid-carefully\"><strong>7. Rebuild RAID Carefully<\/strong><\/h3><p>If RAID fails, rebuilding\ncan be difficult and challenging&mdash;especially, if the failed RAID contains significant data. <strong>RAID rebuilding<\/strong> can take <strong>several\nhours<\/strong> and leads to excessive drive usage. This can cause issues such as <strong>drive overheating<\/strong> and may result in\nanother drive failure leading to permanent data loss in RAID.<\/p><p><strong>Alternatively,<\/strong> use a RAID data recovery software such as <strong><a href=\"https:\/\/www.stellarinfo.com\/windows-raid-recovery.php\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\">Stellar Data Recovery Technician<\/a> <\/strong>to rebuild failed and damaged RAID 0, RAID 5, and RAID 6 arrays. The software can rebuild RAID array even if you don&rsquo;t know the RAID parameters. <\/p><h3 class=\"wp-block-heading\" id=\"h-8-use-a-ups-system\"><strong>8.&nbsp;Use a UPS System<\/strong><\/h3><p><strong>Power failure<\/strong> and <strong>surge<\/strong> can cause severe problems in RAID\narrays and the system. A power surge can\nfry your power supply or motherboard, leading to permanent data loss in RAID. Similarly,\na sudden system or RAID shutdown can cause logical errors in RAID configuration\nand lead to data loss.<\/p><p>A UPS or power\ninverter helps you overcome this problem and gets you enough time to shut down\nthe RAID array, safely.<\/p><h2 class=\"wp-block-heading\" id=\"recover-lost-data-from-a-failed-or-corrupt-raid-array\"><strong>Recover Lost Data from a Failed or Corrupt RAID Array<\/strong><\/h2><p>What happens in case you lost data from\nRAID array despite these preventive tips? Here&rsquo;s what you can do if the data is lost from a RAID 0, RAID 5, or RAID 6 array:<\/p><p class=\"has-vivid-red-color has-text-color\"><strong>a. Check RAID Drives&rsquo; SMART Status<\/strong><\/p><p>After RAID failure, remove the hard drives from the array and then check the SMART status of the individual hard drive. You may use a tool like <strong>Stellar Drive Monitor<\/strong> to check the SMART parameters of drives. Use a SATA to USB connector cable to connect RAID drives to your PC.<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"906\" height=\"599\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/02\/6-10.png\" alt=\"Stellar\" class=\"wp-image-73838 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/02\/6-10.png 906w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/02\/6-10-300x198.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/02\/6-10-768x508.png 768w\" sizes=\"auto, (max-width: 906px) 100vw, 906px\" \/><\/figure>\n<\/div><p>If a drive is failing, clone it. Otherwise, follow the next step and recover your lost data from a damaged RAID array.<\/p><p class=\"has-vivid-red-color has-text-color\"><strong>b.&nbsp;&nbsp;&nbsp;&nbsp; Use a RAID Recovery Software<\/strong><\/p><p>In case of logical RAID failure, there is no way to rebuild the RAID other than a RAID recovery software such as <em><a rel=\"noreferrer noopener\" href=\"https:\/\/www.stellarinfo.com\/windows-raid-recovery.php\" target=\"_blank\">Stellar Data Recovery Technician<\/a><\/em>. The software makes RAID 0, RAID 5, and RAID 6 recovery quick and effortless with its intuitive wizard-like interface and smart RAID array recovery capabilities.<\/p><p class=\"has-very-light-gray-background-color has-background\"><strong>Visit the <a href=\"https:\/\/www.stellarinfo.com\/blog\/recovering-data-from-a-degraded-raid-array\/\">link<\/a> to know step-by-step raid recovery process using the software.<\/strong><\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/www.stellarinfo.com\/public\/image\/catalog\/screenshot\/wdr-tech\/1-stellar-data-recovery-technician-select-data-type.png\" alt=\"Stellar\" class=\"wp-image-73845 apply-gradient-on-post-images\"><\/figure>\n<\/div><h2 class=\"wp-block-heading\" id=\"conclusion\"><strong>Conclusion<\/strong><\/h2><p>RAID provides <strong>real-time protection<\/strong> from disk failures and thus helps <strong>continue the workflow<\/strong>. There are several\nparameters associated with a RAID configuration, which make it redundant,\nreliable, and fault-tolerant. However, these parameters\nalso add to the complexity of data recovery, in case RAID array is failed or\ndamaged. <\/p><p>This blog post shared a few important tips to help you prevent data loss from RAID arrays. It further outlined a <strong><a href=\"https:\/\/www.stellarinfo.com\/windows-raid-recovery.php\">RAID recovery software<\/a><\/strong> to help you recover data that are lost from a damaged or failed RAID array, in case this situation arrives. The software automatically detects and rebuilds the damaged RAID array, even if you don&rsquo;t know the required RAID parameters. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Anyone may face a data loss situation because it can happen in&hellip; <a class=\"more-link\" href=\"https:\/\/www.stellarinfo.com\/blog\/important-tips-to-prevent-data-loss-in-a-raid-array\/\">Continue reading <span class=\"screen-reader-text\">Tips to Prevent Data Loss in a RAID array<\/span><\/a><\/p>\n","protected":false},"author":7,"featured_media":39342,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[803],"tags":[],"class_list":["post-39327","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-raid-data-recovery","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - 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