https://aperturezone.com/tags/proxmox/ Recent content in Proxmox on Aperture Zone https://aperturezone.com/logo.webp https://aperturezone.com/logo.webp Hugo -- gohugo.io fr-fr Thu, 04 Jun 2026 00:00:00 +0000 https://aperturezone.com/posts/zfsexpansion/ Thu, 04 Jun 2026 00:00:00 +0000 https://aperturezone.com/posts/zfsexpansion/ <h2 id="at-first-the-goal-was-simple-to-add-two-disks-to-a-zfs-raidz1-pool-no-major-migration-just-a-storage-expansion-except-that-the-feature-that-allows-thisraidz_expansionis-only-available-starting-with-zfs-23-which-is-itself-included-starting-with-proxmox-9-and-since-the-server-was-running-proxmox-84-the-logic-was-inescapable">At first, the goal was simple: to add two disks to a ZFS raidz1 pool. No major migration, just a storage expansion. Except that the feature that allows this—<code>raidz_expansion</code>—is only available starting with ZFS 2.3, which is itself included starting with Proxmox 9. And since the server was running Proxmox 8.4, the logic was inescapable.</h2> <h2 id="the-context">The Context</h2> <p>The server in question is an HP ProLiant DL360 G6, an old-timer but perfect for playing around with Proxmox. It runs Proxmox VE 8.4 as a standalone node, with a Proxmox Backup Server VM. Storage consists of a ZFS raidz1 pool made up of four 1 TB drives, and two additional drives had been waiting to be added for a while.</p>