From 1fc37a68c412718ef59997b855fcce9af7d77d46 Mon Sep 17 00:00:00 2001 From: Chris Lu Date: Tue, 29 Dec 2020 21:23:59 -0800 Subject: [PATCH] Update README.md --- README.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/README.md b/README.md index f705e4ad7..53147b9c0 100644 --- a/README.md +++ b/README.md @@ -403,7 +403,7 @@ SeaweedFS has a centralized master group to look up free volumes, while Ceph use Same as SeaweedFS, Ceph is also based on the object store RADOS. Ceph is rather complicated with mixed reviews. -Ceph uses CRUSH hashing to automatically manage the data placement. SeaweedFS places data by assigned volumes. +Ceph uses CRUSH hashing to automatically manage the data placement, which is efficient to locate the data. But the data has to be placed according to the CRUSH algorithm. Any wrong configuration would cause data loss. SeaweedFS places data by assigning them to any writable volumes. If writes to one volume failed, just pick another volume to write. Adding more volumes are also as simple as it can be. SeaweedFS is optimized for small files. Small files are stored as one continuous block of content, with at most 8 unused bytes between files. Small file access is O(1) disk read.