This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision |
| omv7:omv7_plugins:zfs [2025/10/25 01:40] – [ZFS - The Memory Myth] crashtest | omv7:omv7_plugins:zfs [2025/10/25 01:43] (current) – [ZFS - General] crashtest |
|---|
| There are a great many misunderstandings with regard to ZFS. This section will go over a few of them: | There are a great many misunderstandings with regard to ZFS. This section will go over a few of them: |
| |
| (**TL;DR** - send me to -> [[https://wiki.omv-extras.org/doku.php?id=docs_in_draft:zfs#kernels_and_their_impact|Kernels and Their Impact]].) | (**TL;DR** - **send me to** -> [[https://wiki.omv-extras.org/doku.php?id=docs_in_draft:zfs#kernels_and_their_impact|Kernels and Their Impact]].) |
| |
| ==== ZFS - The Memory Myth ==== | ==== ZFS - The Memory Myth ==== |
| \\ | \\ |
| **"ECC RAM is required to run ZFS".**\\ | **"ECC RAM is required to run ZFS".**\\ |
| As is the case with most file server and NAS installations, ECC is desirable but not required. ECC is designed to correct randomly "flipped bits" in RAM, notionally caused by cosmic rays. While flipped RAM bits could cause an errored disk write, a more likely outcome would be a kernel or application error. Data stored and checksummed, on a spinning hard drive or an SSD, is another matter altogether. Correcting storage media errors is a task that ZFS handles well.\\ | As is the case with most file server and NAS installations, ECC is desirable but not required. ECC is designed to correct randomly "flipped bits" in RAM, notionally caused by cosmic rays. While flipped RAM bits could cause an errored disk write, a more likely outcome would be a kernel panic or an application error. Data stored and checksummed, on a spinning hard drive or an SSD, is another matter altogether. Maintaining error free data and correcting storage media errors and is a task that ZFS handles well.\\ |
| \\ | \\ |
| **"ZFS is eating all of my RAM!"**\\ | **"ZFS is eating all of my RAM!"**\\ |