[OmniOS-discuss] OmniOS based redundant NFS

[sergey ivanov]

Hi,
as end-of-life of r151014 approaches, we are planning upgrade for our
NFS servers.
I'm thinking about 2 servers providing ISCSI targets, and 2 another
OmniOS servers using these ISCSI block devices in mirrored ZPOOL
setup. IP address for NFS service can be a floating IP between those 2
servers.
I have the following questions:
1. Are there any advantages to have separate ISCSI target servers and
NFS servers or I should better combine one ISCSI target and NFS
server on each of 2 hosts?
2. I do not want snapshots, checksums, and other ZFS features for
block devices at the level where they are exported as ISCSI targets, -
I would prefer these features at the level where these block devices
are combined into mirror Zpools. Maybe it's better to have these ISCSI
target servers running some not so advanced OS and have 2 Linux boxes?
3. But if I have SSD for intent log and for cache, - maybe they can
improve performance for ZVOLs used as block devices for ISCSI targets?

Does anybody have experience setting up such redundant NFS servers?
-- 
Regards,
Sergey Ivanov