pedro6161
36 Posts
Quote from pedro6161 on January 1, 2022, 8:01 pm
Hi Happy New Years for all,
Are Petasan will work if i only have 1x 256GB Nvme for OS 1x 250 GB SSD for journal and 1x 10TB SATA as OSD ?
Or i should have minimum 3 server but the configuration minimum like above ?
Please Advice
Hi Happy New Years for all,
Are Petasan will work if i only have 1x 256GB Nvme for OS 1x 250 GB SSD for journal and 1x 10TB SATA as OSD ?
Or i should have minimum 3 server but the configuration minimum like above ?
Please Advice
Ste
125 Posts
Quote from Ste on January 3, 2022, 2:38 pm
Hi, if you don't have at least three nodes the cluster won't build at all.
Hi, if you don't have at least three nodes the cluster won't build at all.
pedro6161
36 Posts
Quote from pedro6161 on January 3, 2022, 7:45 pm
okay, how about minimum disk ? are 2 disk for 1x journal and 1x osd it's okay ?
okay, how about minimum disk ? are 2 disk for 1x journal and 1x osd it's okay ?
admin
2,930 Posts
Quote from admin on January 4, 2022, 11:37 pm
per node yes. if you do not use HDD, then no need for journal.
per node yes. if you do not use HDD, then no need for journal.
Shiori
86 Posts
Quote from Shiori on January 12, 2022, 7:01 pm
simply put, you need 3 nodes to build the cluster.
what you choose for a replication setting will determine how many OSDs (hdd) are needed to start a pool. If you select 2x then you need 2 OSDs in the cluster, does not matter which nodes have them. But if you select 3x then you need an OSD per node. Yes, you can just place your OSDs in one node and it will work, but you risk all of your data to a single node failure.
you can save a bit of $$ by not using NVME for your system drive, but if you have a few 128gb NVMEs around then they wont hurt.
One journal per 5 OSDs per node is normal. So adding a journal to one node to start is all thats needed on a 3 OSD cluster, but after you start adding more OSDs, you should really consider adding a journal per node.
simply put, you need 3 nodes to build the cluster.
what you choose for a replication setting will determine how many OSDs (hdd) are needed to start a pool. If you select 2x then you need 2 OSDs in the cluster, does not matter which nodes have them. But if you select 3x then you need an OSD per node. Yes, you can just place your OSDs in one node and it will work, but you risk all of your data to a single node failure.
you can save a bit of $$ by not using NVME for your system drive, but if you have a few 128gb NVMEs around then they wont hurt.
One journal per 5 OSDs per node is normal. So adding a journal to one node to start is all thats needed on a 3 OSD cluster, but after you start adding more OSDs, you should really consider adding a journal per node.
