Hi, I was wondering about DSM's I/O performance on iSCSI or NFS for VMware vSphere 5.x
I'm using a NexentaStor ZFS virtual machine with ZiL and L2ARC on SSD: performance is great!
An LSI/M1015 PCIe card flashed in IT mode - with 8 HDD - is being passed through using VT-d, no problem.
As mentioned on the previous POST, support in ESXi is robust and does not require the use of RDM and PVSCSI.
SMART is working too, natively.
NexentaStor also has a great feature to light up channels on the LSI/M1015 card (visible blink on the PCB), to identify the disk where the SATA cable is attached to: awesome to replace a defective hard disk drive, limiting human error.
Anyway, there are a lot of functionalities in DSM that I really like (Surveillance Station, Plex, etc.)
Sure, I could backup all my vSphere VMs and deploy DSM 4.2 instead.
Now, I really doubt to obtain any benefits in terms of I/O performance as ZFS is a true performer.
As a compromise, I would hope NOT to loose too much velocity overall.
Any experience/thoughts on that?
Or shall I wait for XPEnology's DSM 4.3 , which bring SSD caching... hoping to take I/O performance to the NexentasStor level?
Cheers.