1.If users want to do Rsync as the server site(target), users must be enable the Rsync server first.
2.After enabling Rsync server, users need to create a target module. If users don't create it, the client site can find the server site to do Rsync function.
3.After creating the target module, user can find the target module when doing Rsync from client site to server site.
Qsan provides a monthly updated compatibility matrix for all customers to check which disk models have been tested and verified on which Qsan storage models. The compatibility matrix is downloadable from Qsan partner portal. We also suggest using Enterprise level disks on all Qsan products to ensure the durability as most of the desktop drives are aredesigned for 24x7 usage and might also have durability issue in multiple disks environments with stronger co-vibration factors.
1.Creates a Rsync task on the Rsync backup page, then selects the source path.
2.Selects target(server) for Rsync function, users need to type some information(address, port number, Target module, user name and password)  from the server. So users need to create target and account on the server first.
3.After the above settings, users can use Rsync function to backup data from client to server by clicking the "start" button.
The S.M.A.R.T. is a monitoring mechanism on SATA disk, a SAD disk uses its own reporting mechainsim for disgnostic purposes. Thereofore so it is normal that on SAS disk you won't see any S.M.A.R.T. values, though some basic information such as disk temperature can still be reported.
Currently (by 2015/March) the only Qsan NAS model that supports FC connections is U300-F30.
No, for now the Qsan NAS products don’t support USB external storage. If the user needs more space from Qsan NAS, TrioNAS LX series support JBOS expansion units for adding more disks to the system.
Because upgrades from U300-P10 to U300-F30, the iSCSI feature will be disable. U300 can't support iSCSI and FC pcotocols at the same time.
On QSAN NAS, all NAS models support networking versopn UPS, but for U4/U6 series, they support serial version UPS. On SAN, we support three snmp version, serial, networking and megatec UPS. 
U1/U2/U3 series has built-in antivirus service provided by McAfee, while U4/U6 series supports iCAP based AntiVirus server,which has to be configured separately and works externally to the U4/U6 units.
Compared to other commonly used LAN file sharing protocol such as CIFS and AFP, WebDAV can be used over Internet. And compared to commonly used Internet file sharing protocol such as FTP and Http, WebDAV has the advantage of providing file-locking mechanism, as well as on-line editing possibility.