HP Surestore Tape Library Model 10/180 HP Surestore Bridge FC 2/1 LV and FC 4/ - Page 135

Discovery Mode, Auto Discovery, Reboot Events, Link-up Events, Manual Discovery Only, option from

Page 135 highlights

Chapter 6 ■ Discovery Mode toggles the Discovery Mode among the following options: Auto Discovery on Reboot Discovery on Link Up Manual Discovery Only Discovery OFF Discovery Mode determines how the bridge will discover new FC devices. - Auto Discovery allows the bridge to automatically discover all Fibre Channel devices when the bridge reboots or whenever link-up events occur, such as connecting cables or rebooting network hubs. - Reboot Events is the default selection. Both the ports and the devices behind the ports are discovered. - Link-up Events discovers both the ports and the devices behind the ports for the first link-up event. Subsequent link-up events will only discover the ports and not the devices behind the ports. Note SCSI devices attached to a Fibre Channel port do not need to be mapped as sequential FC LUNs. If the device in question supports the REPORT LUNS command, then any mapping desired by the user is acceptable. However, if the device does NOT support the REPORT LUNS command, the discovery process will stop whenever the LUN scan finds an empty 16-LUN block, starting on a 16-LUN boundary. If such a block is found, FC Discovery discovers only the LUNs up to the empty block; LUNs after the empty block are not discovered. Manual Discovery Only sets discovery of new devices to only occur after the user selects the [Discovery] option from the Main menu or when a Registered State Change Notification (RSCN) is received from a fabric. With this option, the ports are discovered but the devices behind the ports are not discovered. Discovery Off is the same as Manual Discovery except it does not receive Registered State Change Notifications (RSCN) from the fabric and thus does not initiate discoveries for state changes. Discovery Off is the default setting for Discovery Mode. ■ FC Port Mode can be set to either Auto Sense (default setting or N_Port Mode. Main Menu 137 Chapter 6

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Chapter 6
Main Menu
137
Chapter 6
Discovery Mode
toggles the Discovery Mode among the following
options:
Auto Discovery on Reboot
Discovery on Link Up
Manual Discovery Only
Discovery OFF
Discovery Mode
determines how the bridge will discover new FC devices.
Auto Discovery
allows the bridge to automatically discover all Fibre
Channel devices when the bridge reboots or whenever link-up events
occur, such as connecting cables or rebooting network hubs.
Reboot Events
is the default selection. Both the ports and the devices
behind the ports are discovered.
Link-up Events
discovers both the ports and the devices behind the
ports for the first link-up event. Subsequent link-up events will only
discover the ports and not the devices behind the ports.
Note
SCSI devices attached to a Fibre Channel port do not need to be
mapped as sequential FC LUNs. If the device in question supports the
REPORT LUNS command, then any mapping desired by the user is
acceptable. However, if the device does NOT support the REPORT LUNS
command, the discovery process will stop whenever the LUN scan finds
an empty 16-LUN block, starting on a 16-LUN boundary. If such a
block is found, FC Discovery discovers only the LUNs up to the empty
block; LUNs after the empty block are not discovered.
Manual Discovery Only
sets discovery of new devices to only occur after
the user selects the
[Discovery]
option from the
Main
menu or when a
Registered State Change Notification (RSCN) is received from a fabric.
With this option, the ports are discovered but the devices behind the ports
are not discovered.
Discovery Off
is the same as Manual Discovery except it does not receive
Registered State Change Notifications (RSCN) from the fabric and thus
does not initiate discoveries for state changes. Discovery Off is the default
setting for Discovery Mode.
FC Port Mode can be set to either Auto Sense (default setting or N_Port
Mode.