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another method is to add the unraid storage in to proxmox and then use the pve gui to do a hard drive move on the vm. the takes some good nix skills, not sure you will like it, this will let you move it to any format you desire, and the vm could even be running while you do it (slow). But you...

Short take: I would call that "not the whole story", but most likely (you say you have light use), you wont notice any issue for several years ... I know, sorry, blah blah here- Rest of the story and other important points- ZFS already writes a transaction log of *synchronous data* (zil) to the...

I bought a pair for $20 once ;) As long as it looks like a "pcie card", its not the mini, that will be really obvious. Flashing takes ~5-10 minutes and a couple reboots-...

You were real worried about ZFS and SSD TRIM - the 3ware does not support TRIM, unless they have come out with an update (i dont think broadcom cares to support them). This is what you could be looking at-...

Let us know how that 3ware turns out... benchmark it, know your performance as an actual number, and associate that with what you experience on your VM workload... I suspect it will do about 300mb/s on RAID6 - I wouldnt want too many win-vms touching that. I would not touch the 3ware with zfs...

I have been seeing a lot of users asking about ZFS and its magic abilities, here is a crusher for those on how bad it can get if you dont pay attention every last detail. Unfortunately the R730 is not on my bench, so today we have a Dell R720: 2x Xeon E5-2620, 32GB RAM, OS on standalone Samsung...

On your original system you talk of io issues... I am highly suspect of the 3ware, ~8 years back I used 20-30 of those on both windows and linux servers in bare metal and perf was on the low side, I used one on a low-load hypervisor with 1 VM! and it was unbearable, and it wasnt even RAID5/6. I...

Sounds like fun, if you run windows VM, I might suggest Anvils storage benchmark, or on linux, fio. You will want to run an initial quick test, and a 2nd test that exceeds RAM cache size (it may take a while to finish). Those T30 towers are monsters with no guts, have you looked at 2nd hand...

If you are determined to do ZFS, ideal config: - RAID1 for PVE boot. - RAID10 of 8 drives - 3x PCIe SSD, 2 for ZIL/SLOG, and 1 for L2ARC read cache. 4x desktop SSD, i dont know what to do with these, if you have slots, use them for a faster RAID10 array if your use case can put anything on...

You are getting close, but will need to do some edits on that conf... A couple observations- The 3Ware cards gave me terrible performance on another platform when I used to use them, in fact I think I had that exact model and had to ditch it for another card. That aside - it is not an HBA -...

This is not a good production server, I have not seen another virtualization platform that does not suggest using RAID10, or SSDs for any decent workload. These days users wanting performance on their desktop run SSD. It sounds like you are using 2TB *consumer* spinning drives with a low budget...

lvcreate -V 1000G -T pve/data -n backups But.... doing -V means he didnt count the available size properly, and is over provisioning, which is fine, if you actually put that amount of data on there you will have a bomb unless you add a disk to the group, it is suggested to count your...

I dont backup my boot devices, just rsync out my /etc/pve, and any /etc/lvm , /etc/zfs, but even those can be recovered easily. The gui is simple enough for backups, you can use a local drive, remote nfs, etc: https://pve.proxmox.com/wiki/Backup_and_Restore If you have a remote (or local)...

agent: 1 bootdisk: virtio0 cores: 4 ide2: local:iso/virtio-drivers.iso,media=cdrom,size=309208K memory: 5120 name: TestWin7 net0: e1000=5E:92:08:E8:D1:9C,bridge=vmbr0 numa: 0 ostype: win7 scsihw: virtio-scsi-pci smbios1: uuid=b82d3965-e6b5-4436-a47b-45ad2a0b2b2f sockets: 1 unused0...

This is a great guide with lots of useful tricks, (some other tricks not so much)... but as noted, I would never want to do this in production - not even in my home, what if something went haywire, ie upgrade to newest rev of PVE, and you need to quickly get back up, there are a lot of commands...

Thanks so much for this, it is exactly the encouragement I was looking for.

I was trying to re-add an unused disk to a VM, and it failed showing the warning below, I check the conf file, and there is no duplicate for the size. 5.1-43, Latest updates as of today. Error: Parameter verification failed. (400)

I am up in the air on which platform to go with - Dell or Quanta. I have done some limited ZFS installs to date so I know my way around it for the most part, but never anything big. I need at least 16TB of fast space, with room to grow later. So typically my go-to is a Dell R730xd 26x 2.5...

That is what I was thinking, with the mirrored vdevs, I think that allows me to add new mirrors down the road to more easily expand it.

I came across some quanta servers too cheap to turn down and want to make a test lab to try some ZFS clustering on low end disks... looking for some commentary- what will give best performance with least risk, and least complexity, most functionality. I have been using PVE since v1.4 and am...