{"id":468,"date":"2025-12-28T20:00:00","date_gmt":"2025-12-28T20:00:00","guid":{"rendered":"https:\/\/www.lighthouse-program.com\/?p=468"},"modified":"2025-12-24T08:41:46","modified_gmt":"2025-12-24T08:41:46","slug":"lessi-learned-week-1-2026","status":"publish","type":"post","link":"https:\/\/www.lighthouse-program.com\/?p=468","title":{"rendered":"Lessi learned &#8211; week 1\/2026"},"content":{"rendered":"\n<p class=\"has-vivid-cyan-blue-color has-text-color has-link-color wp-elements-a8ceba65b82e08fd63d02ebcf0f9b2ff wp-block-paragraph\"><strong>Welcome to the \u201cLessi Learned\u201d Newsletter!<\/strong><\/p>\n\n\n\n<div style=\"height:28px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"235\" height=\"350\" src=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/photo-backup-1.jpg\" alt=\"\" class=\"wp-image-554\" srcset=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/photo-backup-1.jpg 235w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/photo-backup-1-201x300.jpg 201w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/photo-backup-1-141x210.jpg 141w\" sizes=\"auto, (max-width: 235px) 100vw, 235px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Right now during the holiday season, many of us are once again adding countless new photos full of special memories to our collections.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At work, we treat data protection with the utmost care \u2014 but at home, regular backups of our private photos often don\u2019t get the same attention.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It\u2019s no surprise, considering that smartphones make it so quick and convenient to take countless photos, which then end up scattered across SD cards and various cloud services, making it easy to lose track of where everything is stored.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That\u2019s why the holiday season is a good moment to review your personal backup strategy. Gathering your photos from the past year and saving an additional copy to an external drive, stored securely at home or perhaps even in a safe deposit box, can prevent unpleasant surprises.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Because if all your photos disappear at once, even the holiday spirit might struggle to bring peace.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">With that in mind, I wish you happy holidays and hope you enjoy reading this newsletter! By the way, if you are looking for a festive backup job monitoring, read the Lessi-Learned section carefully \ud83d\ude09.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-8f761849 wp-block-group-is-layout-flex\">\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:17% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/lightning.png\" alt=\"\" class=\"wp-image-297 size-full\" srcset=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/lightning.png 1024w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/lightning-300x300.png 300w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/lightning-150x150.png 150w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/lightning-768x768.png 768w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/lightning-210x210.png 210w\" sizes=\"auto, (max-width: 980px) 100vw, 980px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<h1 class=\"wp-block-heading\"><strong>Newsflash<\/strong><\/h1>\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-vivid-cyan-blue-color has-text-color has-link-color wp-elements-6ab223435921573dfebe3db140bfcebe wp-block-paragraph\"><strong>vExpert 2026 Applications are open<\/strong><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.lighthouse-program.com\/?p=465\" target=\"_blank\" rel=\"noreferrer noopener\">Last issue<\/a> I highlighted that applications for the <strong>Veeam Vanguard<\/strong> program are now open \u2014 still a great opportunity you shouldn\u2019t miss!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Building on that momentum, another standout community program has just opened its application cycle: the <strong>VMware by Broadcom vExpert program<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This global advocacy initiative has been around since 2009 and today includes roughly 1,350 active members across more than 75 countries, making it a truly international peer network.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"514\" src=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/vexpert-badge_Years-14.png\" alt=\"\" class=\"wp-image-617\" style=\"aspect-ratio:1.9455735446090252;width:251px;height:auto\" srcset=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/vexpert-badge_Years-14.png 1000w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/vexpert-badge_Years-14-300x154.png 300w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/vexpert-badge_Years-14-768x395.png 768w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/vexpert-badge_Years-14-210x108.png 210w\" sizes=\"auto, (max-width: 980px) 100vw, 980px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">I\u2019ve been part of this amazing and highly knowledgeable community for <strong>14 years<\/strong>, and the relationships and support I\u2019ve gained, whether solving tricky issues or advancing my career, have been invaluable.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you\u2019re actively contributing in the virtualization space with VMware, this is your moment to apply and grow your impact. Applications close January 15th at 4:00 PM PST!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">And don\u2019t forget \u2014 applications for the <strong>Veeam Vanguard<\/strong> program are still open too!<\/p>\n\n\n\n<p class=\"has-luminous-vivid-amber-color has-text-color has-link-color wp-elements-fe4139fdbd6cd8afcf576277a6812986 wp-block-paragraph\"><strong>Find all relevant links here:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/vexpert.vmware.com\/apply\" target=\"_blank\" rel=\"noreferrer noopener\">vExpert Application Link<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.veeam.com\/blog\/veeam-vanguard-2026-applications.html\" target=\"_blank\" rel=\"noreferrer noopener\">Veeam Vanguard Application Link<\/a><\/li>\n<\/ul>\n\n\n\n<div style=\"height:31px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:31px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Patch your systems!<\/h3>\n\n\n\n<div style=\"height:18px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Keeping your environment up to date is crucial. Here are the key updates from the past few days:<\/p>\n\n\n\n<div style=\"height:18px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-vivid-cyan-blue-color has-text-color has-link-color wp-elements-98cd0f0bb4ce6b1c82338afdd7034323 wp-block-paragraph\"><strong>Veeam Backup\u00a0<em>for Microsoft\u00a0365<\/em>\u00a08.3<\/strong><\/p>\n\n\n\n<div style=\"height:18px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"687\" height=\"1024\" src=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/server-patch-687x1024.jpg\" alt=\"\" class=\"wp-image-371\" style=\"width:142px;height:auto\" srcset=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/server-patch-687x1024.jpg 687w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/server-patch-201x300.jpg 201w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/server-patch-768x1144.jpg 768w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/server-patch-141x210.jpg 141w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/server-patch.jpg 784w\" sizes=\"auto, (max-width: 687px) 100vw, 687px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Veeam Backup for Microsoft 365 version 8.3 has been released and is primarily a maintenance and bug-fix update. While the release includes a small number of minor enhancements, for example in the REST API, the main focus is clearly on stability and issue resolution rather than introducing new functionality.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Version 8.3 supports direct upgrades from existing v7, v8, v8.1, and v8.2 deployments.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That said, version 7 should no longer be in use, as it reached end of support in June 2025 and is therefore no longer covered by standard support agreements.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A full overview of all changes and fixes is available in the official Veeam knowledge base article:<br><a href=\"https:\/\/www.veeam.com\/kb4809\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.veeam.com\/kb4809<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Of particular interest in this release is the fix for an issue related to Microsoft Purview Sensitivity Labels. Version 8.3 introduces a mechanism to identify and repair items affected by the problem described in <a href=\"https:\/\/www.veeam.com\/kb4754\" target=\"_blank\" rel=\"noreferrer noopener\">KB4754<\/a>, addressing restore inconsistencies for sensitivity-labeled data.<\/p>\n\n\n\n<div style=\"height:39px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-8f761849 wp-block-group-is-layout-flex\">\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:17% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/bulb.png\" alt=\"\" class=\"wp-image-300 size-full\" srcset=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/bulb.png 1024w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/bulb-300x300.png 300w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/bulb-150x150.png 150w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/bulb-768x768.png 768w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/bulb-210x210.png 210w\" sizes=\"auto, (max-width: 980px) 100vw, 980px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<h1 class=\"wp-block-heading\"><strong>Lessons learned<\/strong><\/h1>\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-vivid-cyan-blue-color has-text-color has-link-color wp-elements-04e3c6a0556fa6fc6094109b5672a458 wp-block-paragraph\"><strong>Unexpected Azure Egress: A Backup Copy Pitfall<\/strong><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Last week, a customer observed unexpected Azure egress costs originating from what was assumed to be a straightforward Backup Copy Job targeting Azure Blob Storage.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Our initial analysis focused on the usual suspects: possible restore operations, configured health checks, or other features that might trigger read access on the object storage. However, none of these were in place, and the source of the Azure-side egress charges remained unclear.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After a deeper investigation, we identified the root cause in the configuration of the Backup Copy Job itself. The job was configured to include database transaction log backups from the source backup jobs.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"811\" height=\"517\" src=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/include-db-egress.png\" alt=\"\" class=\"wp-image-604\" srcset=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/include-db-egress.png 811w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/include-db-egress-300x191.png 300w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/include-db-egress-768x490.png 768w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/include-db-egress-210x134.png 210w\" sizes=\"auto, (max-width: 811px) 100vw, 811px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">When this option is enabled, Veeam Backup &amp; Replication continuously processes and synchronizes transaction log files. This behavior results in frequent access requests against the Azure Blob repository. Each synchronization triggers GetBlob operations, which in turn generate egress traffic.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The effect is particularly noticeable with large or frequently changing transaction logs, such as Oracle archive logs. In such cases, a Backup Copy Job can unintentionally become a significant driver of Azure egress costs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, since avoiding important database backups in the Azure repository is not an option purely for cost reasons, the question arises: how can this be handled more effectively?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">One possible answer is <strong>Veeam Data Cloud Vault<\/strong>\u2014an Azure Blob Storage offering with egress costs already included. This removes uncertainty around outbound traffic charges and provides predictable, transparent costs, so you know exactly what to expect on your monthly bill.<\/p>\n\n\n\n<div style=\"height:39px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:39px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-vivid-cyan-blue-color has-text-color has-link-color wp-elements-ea577688beba1d5c1990efb96845dbd3 wp-block-paragraph\"><strong>Backup Job Monitoring \u2014 Holiday Edition<\/strong><\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">One last <em>Lessi-Learned<\/em> topic for this year \u2014 not an official Veeam tool, but perfectly on brand for the holiday season!<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"552\" height=\"450\" src=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/tree-monitoring-Stephen.png\" alt=\"\" class=\"wp-image-621\" style=\"aspect-ratio:1.2267365661861074;width:260px;height:auto\" srcset=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/tree-monitoring-Stephen.png 552w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/tree-monitoring-Stephen-300x245.png 300w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/tree-monitoring-Stephen-210x171.png 210w\" sizes=\"auto, (max-width: 552px) 100vw, 552px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">As part of a fun side project, my colleague Stephan Herzig built a Veeam VBR monitoring script\u2026 in full Christmas outfit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It visualizes your backup job monitoring as a Christmas tree, where each ornament represents a backup job and its current status. Color meanings are intentionally left unexplained \u2014 discovering them is part of the fun \ud83c\udf81<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pro tip: keep a close eye on the star on top of the tree \u2014 it hides an extra feature.<br>Festive, nerdy, and surprisingly useful.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Script link: <strong><a href=\"https:\/\/github.com\/yetanothermightytool\/python\/tree\/main\/vbr\/vbr-holidays-monitor\" target=\"_blank\" rel=\"noreferrer noopener\">Veeam VBR Happy Holidays Monitor<\/a><\/strong><\/p>\n\n\n\n<div style=\"height:39px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:39px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-8f761849 wp-block-group-is-layout-flex\">\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:17% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/Pin.png\" alt=\"\" class=\"wp-image-298 size-full\" srcset=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/Pin.png 1024w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/Pin-300x300.png 300w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/Pin-150x150.png 150w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/Pin-768x768.png 768w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/10\/Pin-210x210.png 210w\" sizes=\"auto, (max-width: 980px) 100vw, 980px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<h1 class=\"wp-block-heading\"><strong>Feature of the day<\/strong><\/h1>\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-vivid-cyan-blue-color has-text-color has-link-color wp-elements-3ad190d9d9eae0de86c1a7d09059015b wp-block-paragraph\"><strong>BitLooker (not BitLocker \u2014 it\u2019s not a typo)<\/strong><\/p>\n\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"164\" height=\"245\" src=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/bitlooker.png\" alt=\"\" class=\"wp-image-531\" srcset=\"https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/bitlooker.png 164w, https:\/\/www.lighthouse-program.com\/wp-content\/uploads\/2025\/12\/bitlooker-141x210.png 141w\" sizes=\"auto, (max-width: 164px) 100vw, 164px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Today\u2019s \u201cFeature of the Day\u201d highlights a capability that has been part of Veeam Backup &amp; Replication for many years \u2014 introduced in <strong>version 9<\/strong> (If my research is correct) \u2014 yet is still often overlooked:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>BitLooker<\/strong>, officially known as <em>Exclude Deleted File Blocks<\/em>. It represents a class of features that many administrators rely on without fully understanding what happens under the hood.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">BitLooker analyzes the NTFS Master File Table inside a virtual machine to identify disk blocks that belonged to deleted files. These blocks are excluded from the backup process, significantly reducing backup size, network traffic, and storage usage.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In environments with high data churn \u2014 for example, build servers producing large temporary artifacts \u2014 this can reduce a 100 GB backup to just 20\u201330 GB.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Why highlight it today? Because it\u2019s a reminder that even long-standing features deserve a closer look.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Many assume such functionality is universal, but one important detail is easily missed: <strong>BitLooker works only on NTFS volumes.<\/strong> It does <em>not<\/em> apply to ReFS or other file systems. This limitation is <a href=\"https:\/\/helpcenter.veeam.com\/docs\/vbr\/userguide\/dirty_blocks.html?ver=13\" target=\"_blank\" rel=\"noreferrer noopener\">clearly documented<\/a> but often unnoticed<\/p>\n\n\n\n<div style=\"height:39px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:39px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Thanks for reading<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">I hope you enjoyed this edition of my Lessi-Learned Newsletter. Thank you for reading!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Got feedback or something you want to see in the next edition? Leave a comment, write me on X (<a href=\"https:\/\/x.com\/lessi001\" data-type=\"link\" data-id=\"https:\/\/x.com\/lessi001\" target=\"_blank\" rel=\"noreferrer noopener\">@lessi001<\/a>) or connect at <a href=\"https:\/\/www.linkedin.com\/in\/andreas-lesslhumer-2bb2725b\/\" target=\"_blank\" rel=\"noreferrer noopener\">LinkedIn<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Want to get the newsletter hot off the press? Sign up for my mailing list and I\u2019ll drop a note in your inbox as soon as the latest issue is ready:<\/p>\n\n\n\n<div class=\"wp-block-noptin-email-optin is-style-noptin-flex has-black-background-color has-background has-small-font-size\"><form><div class=\"noptin-block-form-header\">\n<h2 class=\"wp-block-heading noptin_form_title\">Subscribe to the Newsletter:<\/h2>\n<\/div><div class=\"noptin-block-form-footer\"><input type=\"email\" class=\"noptin_form_input_email\" placeholder=\"Email Address\" name=\"noptin_fields[email]\" required\/><input value=\"SUBSCRIBE\" type=\"submit\" class=\"noptin_form_submit wp-element-button\"\/><\/div><div class=\"noptin-form-notice noptin-response\" role=\"alert\"><\/div><input type=\"hidden\" name=\"source\" value=\"block\"\/><\/form><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Welcome to the \u201cLessi Learned\u201d Newsletter! Right now during the holiday season, many of us are once again adding countless new photos full of special memories to our collections. At work, we treat data protection with the utmost care \u2014 but at home, regular backups of our private photos often don\u2019t get the same attention. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-468","post","type-post","status-publish","format-standard","hentry","category-newsletter"],"_links":{"self":[{"href":"https:\/\/www.lighthouse-program.com\/index.php?rest_route=\/wp\/v2\/posts\/468","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lighthouse-program.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lighthouse-program.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lighthouse-program.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lighthouse-program.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=468"}],"version-history":[{"count":20,"href":"https:\/\/www.lighthouse-program.com\/index.php?rest_route=\/wp\/v2\/posts\/468\/revisions"}],"predecessor-version":[{"id":635,"href":"https:\/\/www.lighthouse-program.com\/index.php?rest_route=\/wp\/v2\/posts\/468\/revisions\/635"}],"wp:attachment":[{"href":"https:\/\/www.lighthouse-program.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=468"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lighthouse-program.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=468"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lighthouse-program.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=468"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}