Dedup vde用于存储ZFS池中的重复删除数据。需要为每X TiB的通用存储分配X GiB。例如,1 GiB的Dedup vdev容量对应1 TiB的Data vdev可用容量。 Vdev布局 根据特定的池用例,添加到vdev中的磁盘以不同的布局排列。不支持将多个具有不同布局的vdev添加到池中。当需要不同的vdev布局时,创建一个新的池。例如,pool1...
一般来说,开启了dedup功能的dataset能做到文件去重复的作用,也就是多个一模一样的文件只占用一份文件的容量。以前用内存来做,代价是用内存换硬盘空间,现在即便是可以用Dedup Vdev来换机械硬盘空间,也不推荐。Meta Vdevs存储了dedup datasheet,同样做到了dedup功能,不如用meta dev。 开启dedup的dataset是不可逆的,...
"additively combining the size of the data VDEV and the DEDUPE VDEV" -- this is completely normal. Dedup vdev operates exactly the same as any other vdevs in a pool. It just has special allocation policy, allowing only dedup tables to be stored there. So from the point of space acco...
No known data errors root@truenas[~]# zpool list NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT Home 349T 134T 216T - - 0% 38% 1.00x ONLINE - WD-Backup 10.9T 3.33T 7.57T - - 0% 30% 1.00x ONLINE /mnt boot-pool 206G 20.6G 185G - 14G 3% 9% 1.00x ...
3) Special/Metadata Vdev从3-Way Mirror变成了2*2-Way Mirror(主要体现在CDM的4KiB写入和混合)...
Metadata (Special) Small Block Size 1M I'm coming from running a QNAP with Docker via Portainer. How can I verify where Dedup lives, and how much space it's using, and are my setting correct? If I need to I'll reset everything again (data is all on the QNAP still).G...
Your garden variety home TrueNAS Core user is using a single raidz2 vdev over Gig Ethernet. Don’t grow that storage with dedup. Just grow that storage, is what I am saying: I think we are saying the same thing, there. Show : Build Show : Network Reactions: Stilez S Stil...
Twin 480GB Optanes as a special mirror vdev for metadata + dedup... but partitioned to grab 50GB of each, for SLOG as well. So the end result is like this: MIRROR HDD1 - 8 TB HDD2 - 8 TB MIRROR HDD3 - 10 TB HDD4 - 10 TB SPECIAL METADATA MIROR ...
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non-redundant primary top-level vdevs, including dedup and special vdevs. When the primary pool storage includes a top- level raidz vdev only hot spare, cache, and log devices can be removed. The Web UI threw an exception because the underlying command failed, although admi...