Stackable Nas(Does Not Apply To The N8900) - Thecus N3200XXX Series User Manual

Max Connections
The maximum number of connections iSCSI.
Error Recovery Level
The Error Recovery Level (ERL) is negotiated during a leading iSCSI connection
login in traditional iSCSI (RFC 3720) and iSER (RFC 5046).
ERL=0: Session Recovery
ERL=0 (Session Recovery) is triggered when failures within a command, within
a connection, and/or within TCP occur. This causes all of the previous
connections from the failed session to be restarted on a new session by sending
a iSCSI Login Request with a zero TSIHRestart all iSCSI connections on any
failure.
ERL=1: Digest Failure Recovery
ERL=1, only applies to traditional iSCSI. For iSCSI/SCTP (which has its own
CRC32C) and both types of iSER (so far), handling header and data checksum
recovery can be disabled.
ERL=2: Connection Recovery
ERL=2, allows for both single and multiple communication path sessions within
a iSCSI Nexus (and hence the SCSI Nexus) to actively perform
realligence/retry on iSCSI ITTs from failed iSCSI connections. ERL=2 allows
iSCSI fabrics to take advantage of recovery in all regards of transport level
fabric failures, and in a completely OS independent fashion (i.e. below the host
OS storage stack).

Stackable NAS(Does not apply to the N8900)

The Thecus IP storage's capacity can be expanded even further using the stackable
function. With it, users can expand the capacity of their network storage systems up
to 5 other stack target volumes which are located in different systems. These can be
stacked through single network access like SMB or AFP acting as a share folder type.
107