Electric hack for powering two hard disks on a OpenRD-base

Building a custom NAS/Fileserver (RAID1) and multiservice homeserver using the OpenRD-base board.

The OpenRD-base board is a development platform based on the Marvell Kirkwood SoC, including 512MB of flash and ram, sata and minipci-express.

It is an amazingly powerful platform for a correct price (~150$), nearly perfect to build a customfanless and low-power consuming server.

RAID1 and OpenRD: electric hack

As my server was supposed to be (among other uses) a fileserver, RAID1 was somewhat ‘required’.

An electric hack is achievable to let the OpenRD SATA port power two hard disks. One is connected to the SATA port and the other to the E-SATA port.

         +--------------+
         |              |
         |  Board       |
         |              |
         +_SATA___ESATA_+
          /port\   port\
          |    |       | 
          | pow|er     | SATA to ESATA cable
  SATA    | cab|e      \
  cable   |   | |      / SATA cable   
          |  |   |    /
          | |     |  /
         [_|_]  [_|_] 

         HDD1   HDD2 

Requirements:

Cut The power lines and solder by-three-lines the two extension cables alltogether (so that two sockets are powered by one plug)

 PLUG                           Socket
-> Board                       -> HDD1 

b r b y                         y b r b
| | | |                         | | | |
| | | |                         | | | |
| | | |                         | | | |      Socket
\ \ \ \                        / / / /    y  -> HDD2
 \ \ \ \                      / / / /    / b
  \ \ \ \____________________/-/-/-/----' / r
   \ \ \______________________/-/-/------' / b
    \ \________________________/-/--------' /
     \__________________________/----------'