petasanrd911
19 Posts
Quote from petasanrd911 on June 22, 2021, 6:10 pm
I have the following
5 nodes
6 hdd osd per node
223GB ssd on each host for OS
223GB ssd on each host not currently configured
Question: ssd is a consumer version
the 223GB ssd that is not currently configured should I use it for:
1 - cache
2 - journal
I have the following
5 nodes
6 hdd osd per node
223GB ssd on each host for OS
223GB ssd on each host not currently configured
Question: ssd is a consumer version
the 223GB ssd that is not currently configured should I use it for:
1 - cache
2 - journal
admin
2,930 Posts
Quote from admin on June 23, 2021, 6:51 pm
cannot comment on SSD reliability for consumer grade devices, some are prone to data loss on power failures aside from this, use it as a journal device.
cannot comment on SSD reliability for consumer grade devices, some are prone to data loss on power failures aside from this, use it as a journal device.
petasanrd911
19 Posts
Quote from petasanrd911 on June 23, 2021, 11:27 pm
Thanks for the reply.
What would happen if the ssd is used as a journal and it fails? Since I would have an ssd journal on each node, do they replicate to each other?
Thanks for the reply.
What would happen if the ssd is used as a journal and it fails? Since I would have an ssd journal on each node, do they replicate to each other?
admin
2,930 Posts
Quote from admin on June 24, 2021, 9:47 am
If the SSD fails. it will fail all local HDD OSDs using it ( typically 4 or 5), they would need to be deleted and re-added with the new journal. This is not something to fear. Journals do not replicate themselves to other nodes, the OSD process is responsible for replication.
If the SSD fails. it will fail all local HDD OSDs using it ( typically 4 or 5), they would need to be deleted and re-added with the new journal. This is not something to fear. Journals do not replicate themselves to other nodes, the OSD process is responsible for replication.
