If I remember correctly, DD990 has 4 IO slots which can be either HBA or NIC.  Those you can install or remove and place something else instead.

Regarding the customer can replce HBA and NIC, there is a document. Please check the following Link

EMC Product Warranty And Maintenance Table

http://www.emc.com/collateral/hardware/warranty-maintenance/h4276-emc-prod-warranty-maint-table.pdf?language=en_US

  * On page.4 there is a mentioning about Data Domain system.

It says that Only "Power Supply, disk drive, SAS controller on ES20" are CRU(Customer Replaceable Units).

I hope this will help...

Thanks,

Like any system, a tech savvy customer can open the case and replace components. This will not effect your contract.

HBA's and NIC's are classified as filed replaceable components. These parts will trigger a FE/CE per your service contract. If you would rather replace them yourself, Data Domain engineers will send you just the parts.

I agree with this statement 100% - with regards to the listed CRU components.

EMC state that CRU's are limited to only these components.

Not all HBA replacements or new installations are straight forward and all HBA replacements on all DDR models require an outage, also an understanding of how many cards can be installed and in which slots to install them.

I recommend using a qualified EMC Field resource to do any work outside those listed CRU components.

Regards,

Jonathan

Hey,

I do not recommend you to replace these parts by your self. Please contact EMC support for HBA and NIC parts replacement.

Preparing to Install or Replace SAS or NIC Cards

Cautions:

• Only trained and qualified personnel should be allowed to install or replace this equipment.

• During the entire replacement procedure, wear a grounding wrist strap to avoid ESD damage to the equipment.

• Service the system on a solid workbench, not while attached to the slide rails when extended from the rack.

Please refer to these doc.

DD640, DD670, DD860, and DD890 HBA Card Replacement or Upgrade

Hope this helps!