HP Mainframe Connectivity Design Guide
Table 49 XP7 FICON channel interface specifications
Connector typeSFP Type
Port Speed
1
# of ports per
card
Channel
feature
Ports per
systemStorage system
LC Duplex
Long wave2/4/8 Gb/s816 ML
176 @ 8 Gb/s
FICON
XP7
Short wave2/4/8 Gb/s816 MS8
192 @ 8 Gb/s
FCP
Default is short
wave. Long
2/4/8 Gb/s816 FC8
96 @ 16 Gb/s
FCP
2
4/8/16 Gb/s88 FC16
wave is
optinal.
1
Ports autonegotiate the speed they will operate at.
2
Currently, no mainframe CHPIDs support 16 Gb/s.
For information on cable types and maximum unrepeated distances, see Table 47 (page 94).
Emulating IBM disk arrays and control units
XP7 storage systems in a mainframe environment are configured to emulate IBM disk arrays. All
disk volumes must emulate an IBM disk array and follow IBM standard formatting. The IBM file
structure standard for disk volumes is CKD or ECKD. This standard specifies the record format of
volumes, and ensures that each record consists of a count field and, optionally, a key field and
data field. The standard also uses the EBCDIC character set (not the ASCII character set used in
open systems).
XP7 storage is configured to emulate IBM standard CUs and volume types. The emulated standard
volumes present the same number of cylinders and capacity to the mainframe as the native S/390
volume type of the same name.
Table 50 (page 98) lists the CU and volume types that the XP7 storage systems can emulate in a
mainframe environment.
Table 50 IBM control units and volumes for emulation
Volume types
1
IBM control unitStorage system
3390-V
2
3390-A
3390-M
3390-L
3390-9
3390-3
I-2107XP7
1
3380 emulation is not supported by XP7.
2
3390-V is the emulation type for POOL volumes only.
Table 51 (page 98) lists the data capacity for different volume types.
Table 51 Volume emulation type specifications
Tracks per cylinder
(bytes per track)Number of cylindersVolume capacity (GB)Volume type
15 (56k)837,7607123390-V
15 (56k)262,668223.23390-A
15 (56k)65,52055.63390-M
15 (56k)32,76027.83390-L
98 XP7 storage system rules