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deejross
Guest
I have been using Proxmox VE for a few months using local storage. While running a few VMs at the same time, I'm starting to notice some IO delays. So I started thinking of how to improve performance and allow things like live migration when I want to add a second Proxmox server. I was originally looking at the Synology 5 bay device, but now I'm thinking of going with a custom built machine (out of spare parts) running FreeNAS. Either way, I know that I have to use iSCSI, but supposedly you can't use an iSCSI target with more than one machine at a time.
So my first question is, how do I do shared storage between two machines using iSCSI? Do I follow the two steps listed here: http://pve.proxmox.com/wiki/Storage_Model#LVM_Groups_with_Network_Backing on both machines using the same iSCSI target?
Second, if I am using a 4 disk RAID-Z (3TB SATA x4) for a total of 9 TB usable (using one disk for parity) for my FreeNAS box, what kind of performance should I expect to see? I would hope it would be faster than local SATA storage, but are we talking about a significant performance improvement?
I don't have a lot of money to spend on this, as it's more of a hobby/experiment right now, but I will be using this setup to run a few web servers (OpenVZ) and maybe a couple of Windows desktop instances (KVM). Eventually, I would like to get a fencing device for HA, but right now I have to get storage taken care of.
Thanks for any advice and helpful tips you can give me!
So my first question is, how do I do shared storage between two machines using iSCSI? Do I follow the two steps listed here: http://pve.proxmox.com/wiki/Storage_Model#LVM_Groups_with_Network_Backing on both machines using the same iSCSI target?
Second, if I am using a 4 disk RAID-Z (3TB SATA x4) for a total of 9 TB usable (using one disk for parity) for my FreeNAS box, what kind of performance should I expect to see? I would hope it would be faster than local SATA storage, but are we talking about a significant performance improvement?
I don't have a lot of money to spend on this, as it's more of a hobby/experiment right now, but I will be using this setup to run a few web servers (OpenVZ) and maybe a couple of Windows desktop instances (KVM). Eventually, I would like to get a fencing device for HA, but right now I have to get storage taken care of.
Thanks for any advice and helpful tips you can give me!