Re: How to cable two ESLS disk expansion units to our new EMX0 expansion unit.

Assuming the cards in 1,3,4,6 are EJ14s or better PCIe Gen3- Quad Port SAS Cards.....

You will cable them as two pairs. Each pair get TWO AA Cables. T4 to T4 and T3 to T3.

Then the YO12s go from T0 to the drawers.
First YO from T0 of one pair to the right most ports of the two controllers in one ESLS with the short leg to the rightmost controller.
Second YO from the other T0 of the same adapter pair to the center two ports of the ESLS also short leg to the right controller.

Repeat with the other drawer.

You should have NO left over cables.

You also have slight overkill with two adapter pairs there you could have put both drawers on one adapter pair but now you're set for expansion.

On this page you're effectively using "Figure 4." Twice, once for each drawer.
https://www.ibm.com/support/knowledgecenter/en/8286-41A/p8eiu/p8eiu_connect_to_server.htm

- Larry "DrFranken" Bolhuis

www.Frankeni.com
www.iDevCloud.com - Personal Development IBM i timeshare service.
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On 7/19/2017 7:24 AM, Rob Berendt wrote:

Supply list:
- One EMX0 Expansion unit
- One EJ08 card
- Two ECC7 cables
- Four ECDU Y012 cables
- Four ECE0 AA12 cables
- Two ESLS disk expansion units configured in Mode 1.
- 30+ disk drives.

Steps:
- Power off unit
- Remove unused 1 Gigabit Ethernet (UTP) 4 Port Adapter PCIE-4x/Short,
Feature code: 5260, 5899 from slot C10 of our 8286-41A system unit.
- Install new EJ08 card into slot C10
- Run one end of ECC7 cable from T1 of EJ08 card into T1 of EMX0 expansion
unit.
- Run one end of another ECC7 cable from T2 of EJ08 card into T2 of EMX0
expansion unit.
That should attach the expansion unit to the system unit.

What confuses me is attaching the expansion unit (EMX0) to the new disk
expansion units (ESLS).
The EMX0 has four identical cards. These cards have four ports each. They
start at the bottom with T0 and end at the top with T3. They are in slots
1, 3, 4, 6.
I can't figure out which diagram (if any) at
https://www.ibm.com/support/knowledgecenter/en/8286-41A/p8eiu/p8eiu_connect_to_server.htm

is applicable.
Should I have any left over Y012 or AA12 cables?


Rob Berendt