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attachability means that customers have more choices
for new storage solutions, or may have the ability to use
existing storage devices, thus helping to leverage exist-
ing investments and lower total cost of ownership for their
Linux implementation.
For details of supported FICON and FCP attachments
access Resource Link at: ibm.com/servers/resourcelink
and in the Planning section go to z890/z990 I/O Connec-
tion information.
The support for FCP channels is for Linux and z/VM 4.3
and later. Linux may be the native operating system on the
zSeries server (note z890 runs LPAR mode only), or it can
be in LPAR mode or, operating as a guest under z/VM 4.3
or later. The z890 provides support for IPL of Linux guest
images from appropriate FCP attached devices.
Now, z/VM V5.1, support for SCSI FCP disks enables the
deployment of a Linux server farm running under VM con-
fi gured only with SCSI disks. With this support you can
install, IPL, and operate z/VM from SCSI disks.
The 2 Gbps capability on the FICON Express channel
cards means that 2 Gbps link data rates are available for
FCP channels as well.
FCP Full fabric connectivity
FCP full fabric support means that any number of (single
vendor) FCP directors/ switches can be placed between
the server and FCP/ SCSI device thereby allowing many
“hops” through a storage network for I/O connectivity. This
support along with 2 Gbps link capability is being deliv-
ered together with IBM and directors from IBM, CNT, and
McDATA. FCP full fabric connectivity enables multiple FCP
switches/ directors on a fabric to share links and there-
fore provide improved utilization of inter-site connected
resources and infrastructure. Further savings may be real-
ized in the reduction of the number of fi ber optic cabling
and director ports.
When confi gured as FCP CHPID type, the z890 FICON
Express features support the industry standard interface
for Storage Area Network (SAN) managment tools.
FICON Express enhancements for Storage Area Networks
Preview - FCP LUN Access Control
IBM zSeries is previewing Fibre Channel Protocol (FCP)
Logical Unit Number (LUN) Access Control which is
designed to provide host-based control of access to storage
controllers and their devices as identifi ed by their logical unit
numbers (LUNs). It will allow read-only sharing of FCP SCSI
devices among multiple operating system images.
If a host channel is shared among multiple operating
system images, the access control mechanism would pro-
vide for either none or all of these images to have access
to a particular storage controller or device (logical unit).
FCP LUN Access Control will allow you to defi ne, via an
access control table, individual access rights to storage
controller ports and devices for each operating system
FCP
Device
FCP
Device
FCP
Device
FCP
Device
FCP
Device
FCP
Device
FCP
Device
FCP
Device
FCP
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FCP
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Fibre Channel
Directors
FCP
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