Intel SSD D3-S4610 960 GB has 6,0 PBW - do you really worry about that this could be too little?
I’m not so worried about the 960GB drive but the 240 GB one which is only 1.4 PBW. That’s the one that concerns me the most. That’s also why I am asking here because my experience with Proxmox and how much writes is relatively new.
Thank you so much.
Ah, sorry, I misunderstood this!
Our numbers go like this: Since about two months we run a three node PVE/Ceph cluster (so I guess that our writes on the system disks are higher than yours because of Ceph). We monitor disk IO and see a constant write flow between 250 and 450 kB/s, let's say, 350 kB/s on average. If my calculation is correct, than 1,4 PBW would give us a runtime of about 125 years.
Ah, sorry, I misunderstood this!
Our numbers go like this: Since about two months we run a three node PVE/Ceph cluster (so I guess that our writes on the system disks are higher than yours because of Ceph). We monitor disk IO and see a constant write flow between 250 and 450 kB/s, let's say, 350 kB/s on average. If my calculation is correct, than 1,4 PBW would give us a runtime of about 125 years.
This information is helpful. When I first put in the node, the disk IO was high, I was seeing it in the MB instead of the KBs. After a while it settled down to be 20-50KB with an occasional spike into the M territory. We run a vzdump nightly which probably also accounts for some of the disk usage. I used to have a VM which was about 150GB but have since whittled it down to be only 66 GB so it probably means less. The first two weeks the server went into production consumed about 6-7TB. I took notes down. Something weird was going on maybe.
I think I put it in on October 7th, by the 21st it was 6.5TBW. Now by 12/23/2019 we are at 13.4 TBW. So I don't know why our numbers are so high.
Anyways, at this level, lets say we are generous. I think it's on average about 8TB a month, which still turns out to be roughly 260 GB/day. I mean, the 7th to 7th of each month means December is a little over 2 months, but with 13.4TBW. It seems a little excessive, I guess that is what I'm trying to figure out. I don't think this server is supposed to be using that much Disk IO, but I don't know how to find out what the underlying issue is.
Looking at the system summary though I do see some spikes in the MB range of disk IO.
One change I made in the last couple weeks was change my vzdump method to go from stop and gzip to be a running backup using lzo.
Other than that I'd need to find out more information about what is happening.
With the way things are going, 1.4 PBW would run for roughly 10 years at the rate things are going...I still think the current use is high though so I'd assume some setting I did is making things excessive.
Hi to the community! This is my first touch in forum. I am newbie regarding proxmox. I am pretty sure that this is something simple for the most people here. I need your help to determine if i have installed correctly my raid. I have 2 samsung 850 evo 256GB where i want to install the os in raid 1 formation. And i have 4 hdd 2tb each wanted to have them as raid 10. I have this picture in front of me. How can i be sure that i have achieved it? Have i done everything correctly? Why i cant see my ssd's? Thanks in advance for the help! Nikos
