{"id":140150,"date":"2025-08-06T23:12:27","date_gmt":"2025-08-06T21:12:28","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dostupen-distributiv-proxmox-backup-server-4-0"},"modified":"2025-08-06T23:12:27","modified_gmt":"2025-08-06T21:12:28","slug":"dostupen-distributiv-proxmox-backup-server-4-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/en\/blog\/news\/dostupen-distributiv-proxmox-backup-server-4-0","title":{"rendered":"Proxmox Backup Server 4.0 distribution is now available","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Proxmox, a company known for developing Proxmox Virtual Environment and Proxmox Mail Gateway, has released version 4.0 of Proxmox Backup Server, which is presented as a complete solution for backing up and restoring virtual environments, containers, and server configurations. The installation ISO image is available for free download. Distribution-specific components are open under the AGPLv3 license. Updates can be installed from both a paid Enterprise repository as well as two free repositories that differ in update stabilization levels.       <\/p>\n<p>The system component of the distribution is based on the Debian package base and OpenZFS. The software stack for backup management is written in Rust and supports incremental backups (only changed data is sent to the server), deduplication (only one copy is kept in the presence of duplicates), compression (using ZSTD), and backup encryption. The system is designed on a client-server architecture\u2014Proxmox Backup Server can be used for both working with local backups and as a centralized server for backing up data from different hosts. Fast selective restore and data synchronization modes between servers are provided.    <\/p>\n<p>Proxmox Backup Server supports integration with Proxmox VE for backup of <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/en\/vps\/\"   title=\"of virtual machines\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2216\">of virtual machines<\/a> and containers. Backup management and data recovery are conducted through a web interface. There is an option to restrict user access to their data. All traffic transmitted from clients to <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/en\/server\/dts-shicago\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2952\">server<\/a> is encrypted using AES-256 in GCM mode, and the backups themselves are transferred already encrypted using asymmetric encryption with public keys (encryption occurs on the client side, and compromising the server with backups will not lead to data leakage). The integrity of the backups is monitored using SHA-256 hashes.   <center><img decoding=\"async\" alt=\"Proxmox Backup Server 4.0 distribution is now available\" src=\"\/wp-content\/uploads\/2025\/08\/c270a558d5be91bfdfc35dfce315eaa4.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>      <\/p>\n<p>In the new release:  <\/p>\n<ul>\n<li class=\"l\"> The migration to the Debian 13 distribution package base has been completed, with the release expected on August 9. It comes by default with Linux kernel 6.14.\n<li class=\"l\"> OpenZFS 2.3.3 is utilized, which implements the ability to add new disks to an existing RAIDZ array on the fly, allowing for the expansion of storage size without downtime and without the need to create a new pool. The redistribution of redundant data considering the new disks occurs automatically.\n<li class=\"l\"> An experimental backend has been added for storing backups in object storage that supports the Amazon S3 API.\n<li class=\"l\"> An automatic synchronization launch option has been implemented when mounting the extracted drive. To configure autostart, it is enough to set the 'run-on-mount' flag for synchronization tasks.      <\/ul>\n<p>Source: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=63693\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Proxmox, \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u0430\u044f \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u043e\u0439 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Proxmox Virtual Environment \u0438 Proxmox Mail Gateway, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0432\u044b\u043f\u0443\u0441\u043a \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430 Proxmox Backup Server 4.0, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u0440\u0435\u043f\u043e\u0434\u043d\u043e\u0441\u0438\u0442\u0441\u044f \u043a\u0430\u043a \u0433\u043e\u0442\u043e\u0432\u043e\u0435 \u0440\u0435\u0448\u0435\u043d\u0438\u0435 \u0434\u043b\u044f \u0440\u0435\u0437\u0435\u0440\u0432\u043d\u043e\u0433\u043e \u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0438 \u0432\u043e\u0441\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u0439, \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u043e\u0432 \u0438 \u043d\u0430\u0447\u0438\u043d\u043a\u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432. \u0423\u0441\u0442\u0430\u043d\u043e\u0432\u043e\u0447\u043d\u044b\u0439 ISO-\u043e\u0431\u0440\u0430\u0437 \u0434\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0434\u043b\u044f \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0439 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438. \u0421\u043f\u0435\u0446\u0438\u0444\u0438\u0447\u043d\u044b\u0435 \u0434\u043b\u044f \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u044b \u043e\u0442\u043a\u0440\u044b\u0442\u044b \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 AGPLv3. \u0414\u043b\u044f \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0434\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043a\u0430\u043a \u043f\u043b\u0430\u0442\u043d\u044b\u0439 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":140151,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-140150","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com 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