Is there any other filesystem I can use besides BTRFS for cache pool of 2 SSD drives?   I have had very bad luck with BTRFS, power outages have corrupted my cache drive and it can't recover, what good is it when it can't recover?  Can I do a RAID-1 xfs?

No.  BTRFS is it.  Alternatively you can use the ZFS plugin to create a ZFS pool but it's managed via the command line instead of via the GUI and doesn't directly participate in the share system

 

But, IMO every single computer (whether a server or not) requires a UPS.  Far far too much corruption happens on every OS in the event of sudden loss of power

15 minutes ago, Squid said:

No.  BTRFS is it.  Alternatively you can use the ZFS plugin to create a ZFS pool but it's managed via the command line instead of via the GUI and doesn't directly participate in the share system

 

But, IMO every single computer (whether a server or not) requires a UPS.  Far far too much corruption happens on every OS in the event of sudden loss of power

 

I do have a UPS, I guess I need to plug it in on my unRAID box and enable the feature to shutdown at certain percentage.  Luckily I backup my /mnt/cache/custom folder and VM images every 6 months, I can recover, but it's a waste of time.  I feel I had better luck on xfs single cache drive, less damage on power outages. This server is at my mother's house and I didn't know about the power outages until it was too late and noticed my VM's were offline but I could connect to unRAID and saw "Could not start cache, no filesystem."  Could you please point me in the right direction?  I already have ZFS plugin installed, all I need are some How-To's to get me started doing a ZFS Raid-1 cache.

 

Thanks!

I'm not that guy.  Best to google it or ask in the support thread

7 minutes ago, EArroyo said:

ZFS Raid-1 cache

 

7 minutes ago, EArroyo said:

doesn't directly participate in the share system

I'm not that guy either, but if it doesn't participate in user shares then it isn't really cache.