====== 2021.02.13 Ceph BlueStore サイジング ======

OSDに対するBlueStoreサイズ
^ ^BlueStore size|
^CephFS|4%|
^Object|4%|
^RBD|1%|

[[https://access.redhat.com/documentation/ja-jp/red_hat_ceph_storage/4/html/administration_guide/sizing-considerations-for-ceph-bluestore_admin]]


===== RBD workloads =====

  The general recommendation is to have block.db size in between 1% to 4% of block size. For RGW workloads, it is 
  recommended that the block.db size isn’t smaller than 4% of block, because RGW heavily uses it to store its 
  metadata. 
  For example, if the block size is 1TB, then block.db shouldn’t be less than 40GB. 
  For RBD workloads, 1% to 2% of block size is usually enough.

rocksdb = 2%
waldb = 0.02%


===== 下記も参考RAM/CPUサイジング =====

[[01_linux:13_storage:16_ceph_sizing]]

{{tag>ceph 日記}}