Host Protocol Overview; Which Host Ports Can You Change; Requirements For Changing The Host Protocol - Lenovo ThinkSystem DE Series Hardware Installation And Maintenance Manual

Host protocol overview

You can convert the host port protocol of the baseboard host ports in the controller shelf.
The following figure shows the back of a 2U controller that has two SFP+ (optical) baseboard host ports
and four SFP+ (optical) HIC ports
Note: A two-port HIC is also available.

Which host ports can you change

The controllers in your storage array might have different types of baseboard host ports and different types
of HIC ports. The table shows which host ports can be changed with a feature pack.
If you have...
These baseboard host
ports...
Two SFP+ (optical) ports
The baseboard host ports and the HIC ports can use the same host protocol or different host protocols.

Requirements for changing the host protocol

Learn about the requirements you need to keep in mind when changing the host port protocol.
• You have scheduled a downtime maintenance window for this procedure.
• You must stop host I/O operations when you perform the conversion, and you will not be able to access
data on the storage array until you have successfully completed the conversion.
• You are using out-of-band management. (You cannot use in-band management to complete this
procedure.)
• You have obtained the necessary hardware for the conversion. Your Lenovo Sales Representative can
help you determine what hardware you need and help you order the correct parts.
• If you are attempting to change the baseboard host ports of your storage array, and it currently uses dual-
protocol (also referred to as unified) SFP transceivers that you purchased from Lenovo, you do not need to
change your SFP transceivers.
.
And these HIC ports...
None
Two or four SAS ports
Two RJ-45 (base-T) ports
Four 32Gb FC ports
Four 10Gb or 25Gb iSCSI
ports
Four 10Gb iSCSI or 16Gb
FC ports
You can change...
Only the baseboard host ports
Only the baseboard host ports
Only the baseboard host ports
Only the baseboard host ports
Only the baseboard host ports
All of the ports (DE4000 only)
.
Chapter 3 Hardware replacement procedures
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