Wednesday, April 29, 2020

Microsemi Adaptec SmartRAID 3154-8i16e connector numberings

I'm a fan of Adaptec storage adapters since AHA-1542B 😄

Today I looked into connector numbering of SmartRAID 3154-8i16e, awesome hardware RAID controller card. It seems there is no info regarding to this topic on the net!

This card has 4 external HD mini-SAS connectors and 2 internal HD mini-SAS connectors. When SAS expander or port multiplier is not used, each HD mini-SAS connectors accommodate 4 SATA or SAS drives. Therefore up to 24 SAS or SATA drives can be connected directly to this card.

Fig.1 SmartRAID 3154-8i16e connector numberings

Connector Numbering Scheme

There is a Connector id and CN id, these are differently numbered. From the observation, numbering scheme is as follows:
  • Connector number starts with internal HD mini-SAS connector to mate to SFF-8643 and external HD mini-SAS to mate to SFF-8644.
  • CN number starts with external HD mini-SAS and continue with internal HD mini-SAS.
  • Both numbers are assigned from the connector of the bottom of the card to the top.

 

About Slot Number


Slot number is assigned to these SAS/SATA ends. From the observation, slot number starts from 1, Connector 0 (CN4) has Slot 1, 2, 3 and 4. Connector 1 (CN5) has Slot 5, 6, 7 and 8, and things goes on.

Connector 0 CN4 Internal HD mini-SAS Slot 1,2,3,4
Connector 1 CN5 Internal HD mini-SAS Slot 5,6,7,8
Connector 2 CN0 External HD mini-SAS Slot 9,10,11,12
Connector 3 CN1 External HD mini-SAS Slot 13,14,15,16
Connector 4 CN2 External HD mini-SAS Slot 17,18,19,20
Connector 5 CN3 External HD mini-SAS Slot 21,22,23,24

SFF-8643 to 4 SATA fan-out cable connector numbering


This is a picture of my Microsemi Adaptec HD mini-SAS to 4 SATA fan-out cable, part # 2279800-R. Number tags are attached on each SATA connectors and this number starts from 0.

Fig.2 Closeup photo of SATA connectors of SFF-8643 to 4 SATA fan-out cable 2279800-R.

 

MaxView Storage Manager Physical Devices View


MSM shows physical drive placement as follows:

(In the following example, drives are populated only on the external connectors. Following image is pictured during a test of automatic rebuild therefore RAID array is rebuilding.)

Fig.3 MaxView Physical device list