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Hello I have 50 vps installed in 40 micro servers (microblade with atom C2750 and 8G of RAM), the microblade is connected to an QNAP ES1640DC-V2 (dual controller with 4 SSD cache and 12 SAS Near-line 6T) for storage VMs. All servers have 2,5Gbs/ network interfaces and are connected to NAS with...

Well, for now we have 8*2T in RAID5, so 12T, and we have less tan 1T available. With 40T, or include 36, we will have 3 more space and Normally we had space to what we need in the next years... So You're true, probably I had to buy 5 or 6T disk and not 4T.

Ok, Q-wulf, 45drives products look like fantastic! but for now we have small budget.... If we can renew our Dell with 8 new HDDs and an new card, it will be great for now. I am seeing that your general opinion and experience of freenas are good, so it can be an really good (and not expensive)...

Well, for now, I have no discard any option and know that M1015 card seem working (http://www.amazon.com/IBM-Serveraid-M1015-Controller-46M0831/dp/B0034DMSO6) for freenas, the price isn't very hight. Nas4free detect our RAID10 hardware on our R410, but it's possible to not be the better option...

Well, I have read various post: - http://forum.proxmox.com/threads/21205-iSCSI-Reconnecting-every-10-seconds-to-FreeNAS-solution - http://forum.proxmox.com/threads/16355-Proxmox-VE-3-1-slow-NFS-reads Moreover, it seem dificult to have an good hardware compatibility on an server with raid card...

Well, I search an good solution that really work, with the lower cost possible (as anyone in this world :-) ). I suppose that readymade solution will be better, but the cost is much more highter, so it will be the option only if the first one it's not possible or optimal... I will look the...

Hi All I know, it's not an new post and there is a lot of post of this,I have review a lot of them and still have doubt, I expose our situation and hope that someone can help us to choose the better option. For now, my backup server, is an "old" dell R510, with 16G RAM, and an xeon quad core...

Problem is always in guest logs.... I can still access to host but have an hight load, when load down, I can also access to guest.

Hi I have a few problem with an virtual, when backup run, the kvm failed automatically and I revieve error log : [mar nov 3 04:16:07 2015] sd 2:0:0:0: [sda] abort [mar nov 3 04:17:08 2015] INFO: rcu_sched detected stalls on CPUs/tasks: { 4} (detected by 7, t=60002 jiffies, g=33686286...

Thanks mir!

Well, really we have no need an on-site access, as we have complete remote access to our server without problem. Hope you can send our mail to our spanish contact.. Thanks

We are en Valencia, but the server are in french datacenters.

Hi Mir Of course if he able to help us...

In first time it seem that all were working with new kernel, but few time later, we obtain again low result in kvm... Proxmox team not seem able (or don't want) review it, so I search an profesional that can be able to help us, I contact you firstly as seem you have a lot of experience of this...

Hi Mir Finally, I still with performance that are not seem good and proxmox support don't give me any help about this (I have paid 400€ for no solution to our problem)... Do you able to offer profesional service to review our config and tell us if there is any way to increase result? if yes...

Re: KVM + LVM + DRBD + SSD low performance : SOLVED!!! Ok, so I understand that if I correctly trim my VMs and have DRBD 8.4.5, I have nothing more to do.... Thanks very much!!!

Re: KVM + LVM + DRBD + SSD low performance : SOLVED!!! Sorry Spirit, I misunderstood what you say before.... I have "vitro" for disks and "vitro" for scsi controller type.... changing "scsi" for disks, I can trim now in VM... but it's somethings that also working in others VMs where I have an...

Re: KVM + LVM + DRBD + SSD low performance : SOLVED!!! He I update firstly kernel, with this, I solve the performance problem. Upgrading kernel, drbd is updated to version 8.4.3 that haven't trim support. So I build and install the last version, 8.4.5 that have trim support.

Re: KVM + LVM + DRBD + SSD low performance : SOLVED!!! As say Mir, it's an new feature from 8.4.4 version, is just for that that I update from 8.4.3 to 8.4.5... I have Vitrio disk and vitrio scsi active, and have enable discardon the disk in gui, there is any special test to test if trim is...

Re: KVM + LVM + DRBD + SSD low performance : SOLVED!!! I have no doubt that seem similar issue, because the problem were exactly the same. I thinks that the better way in this case to solve it is updating kernel if there is no VM with openvz working. Still searching info about trim our drbd...