IBM z13s, Technical Manual

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Appendix H. Flash Express
531
cards, redundant PCIe paths to Flash Express cards are provided by redundant I/O
interconnect. Unlike other PCIe I/O cards, they can be accessed from the host only by a
unique protocol.
A Flash Express PCIe adapter integrates four SSD cards of 400 GB each for a total of 1.4 TB
of usable data per card, as shown in Figure H-2.
Figure H-2 Flash Express PCIe adapter
Each card (of a pair of cards) is installed in a PCIe I/O drawer in two different I/O domains. A
maximum of two pairs are installed in a drawer with only one flash card per domain. Installing
more than two pairs requires a second PCIe I/O drawer. Install the cards in the front of the
installed drawers (slots 1 and 14) before you use the rear slots (25 and 33). Format each pair
of cards before you use them.
Figure H-3 shows a PCIe I/O drawer that is fully populated with Flash Express cards.
Figure H-3 PCIe I/O drawer that is fully populated with Flash Express cards
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Card Slot 19
Card Slot 18
Card Slot 17
Card Slot 16
PCI-IN 2
Card Slot 14
Card Slot 13
Card Slot 12
Card Slot 11
FSP
Card Slot 09
Card Slot 08
Card Slot 07
Card Slot 06
PCI-IN 0
Card Slot 04
Card Slot 03
Card Slot 02
Card Slot 01
Card Slot 33
Card Slot 32
Card Slot 31
Card Slot 30
Card Slot 20
Card Slot 21
Card Slot 22
Card Slot 23
PCI-IN 3
Card Slot 25
Card Slot 26
Card Slot 27
Card Slot 28
FSP
PCI-IN 1
Card Slot 35
Card Slot 36
Card Slot 37
Card Slot 38
Top View
Rear Front
2 interconnect
cables
2 interconnect
cables