I understand your arguments.
But you're just considering by itself the experience that you had in the past.
There are no statistics telling us that Raid Controllers are more likely to burn, than Hard Disks.
Parts available for replacement has nothing to do with what is in discussion here. The point is, Hardware Raid is Safe or not ? Obviously if you care with your service avaiability, you should always have parts for replacement, regardless using Hardware Raid or not.
When you said "if battery and...
I'm using ZFS with Hardware Raid. It performs really good.
I don't know why and how it was spread the idea that ZFS can't be used with Hardware Raid controller. It is such as a Myth.
This article explains why you can, for sure, use ZFS with Hardware Raid...
Since Proxmox 5.1 I'm facing a mouse lag with NoVNC.
Is there any configuration which I could edit to try to solve this ?
On Proxmox earlier versions it doesn't happens.
Here it is a recording, on Proxmox 5.1, showing Mouse sliding with Lag:
And here it is another...
Hello @martin ,
I run proxmox in a Dell Poweredge 11th Generation. Last week after a kernel update, my grub menu wasn't not even shown, and I had to reinstall Proxmox. I haven't tested this fix yet.
Do you think was that related to this bug ?
I've seen that using ZFS on a HW RAID is not advisable.
Due to this advices, In my setup with Hardware Raid, I've been planning to use LVM with cache, instead of ZFS.
Have someone experienced good perfomance, working on Proxmox + LVM Cache ?
Yes. The config, which I posted above, is from the server that is having the slow write issue. It runs a 512 bytes SSD.
The other server, that is running fine, has enteprise SSD (4K sector size).
I decided not using ZFS with 512 bytes SSD. I've already tried everything, but with no success.
root@br01:~# zpool status
scan: scrub repaired 0B in 1h31m with 0 errors on Sun Apr 8 01:55:16 2018
NAME STATE READ WRITE CKSUM
rpool ONLINE 0 0 0
sda2 ONLINE 0 0 0...
Hello @6uellerbpanda ,
I have 32 GB RAM.
Server 1 (Running ZFS smoothly, fast Read and fast Write operations):
Xeon E3 1230 v5
32 GB RAM
SSD 480 GB (4K sector size) - ashift 12 and zvol/zpool 128K
Server 2 (Running ZFS terribly, fast Read but ...... very poor Write operations):
Xeon E3 1230...
I've read that ARC is only used for caching Read operations, not write.
I think that this problem is being caused because my SSDs are 512 bytes, ZFS set with ashift 9 and zpool block size 128K.
I have another setup with 4K SSDs, ashift 12 and zpool block size 128K (This setup is...
I'd like to hear from you about the write speed of your ZFS setup.
I'm using SSD, when a VM is being cloned, IO goes up to 30 - 40%.
I see , from iotop command, that txg_sync is at 99%, and write oscilates from Kilobytes to a couple Megabytes, every second.
I don't know what is...