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IBM i LUN serial suffix number
Use this control switch setting only when you attach more than one DS8000
storage system to an AS/400 or IBM i host and the last three digits of the
worldwide node name (WWNN) are the same on any of the storage systems.
Control switch settings - attachment to IBM Z
The following control switch settings are specific to IBM Z.
Control-unit initiated reconfiguration (CUIR) support
Control-unit initiated reconfiguration (CUIR) allows automation of channel
path quiesce and resume actions during certain service actions. This setting
eliminates the requirement for manual actions from the host.
Control unit threshold
This control switch provides the threshold level, presenting a SIM to the
operator console for controller related errors. SIMs are always sent to the
attached IBM Z hosts for logging to the Error Recording Data Set (ERDS).
SIMs can be selectively reported to the IBM Z host operator console, as
determined by SIM type and SIM severity.
Device threshold
This control switch provides the threshold level, presenting a SIM to the
operator console for device related errors. Device threshold levels are the
same type and severity as control unit threshold settings.
Lights-on fast load for the 16 Gb/s host adapters
16 Gb Fibre Channel lights-on fast load provides seamless microcode
update to storage arrays, and eliminates potential loss of access.
Media threshold
This control switch provides the threshold level, presenting a SIM to the
operator console for media related errors. Media threshold levels are the
same type and severity as control unit threshold settings.
Present SIM data to all hosts
Service Information Messages (SIMs) are offloaded to the first I/O request
directed to each logical subsystem in the storage facility if the request is
device or control unit related, or offloaded to the individual logical volume
when the request is media related. This control switch determines whether
SIMs are sent to all, or to only the first, attached IBM Z LPAR making an
I/O request to the logical system or logical volume.
IBM Z high-performance FICON enhanced buffer management
IBM Z high-performance FICON enhanced buffer management provides
improved performance for multi-site configurations when writing data
remotely (remote site recovery).
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