I have been working on setting up a new Solaris 11 server for home lab use. I plan learning a bit about ZFS and expanding my sysadmin knowledge a bit. (heavy networking background!) Anyways I got the follow components and want to make sure I got the right size PSU.

I picked up a 430W Corsair CX430.

Here are the components and rough estimates

  • AMD phenom x4 125 Watt max
  • Rosewill RSV-L4500 Black Metal/ Steel
    • 1.0 mm thickness
    • 4U Rackmount Server Chassis
    • 15 Internal Bays, 8 fans - 30 Watt max
  • Asus m4A78T-E - was just laying around - Budgeted 50 Watts
  • 4 Sticks of DDR3 - 16GB total - 16 Watts max
  • 15 SATA HDDs, 1 SSD - 320 Watts max
  • 2 IBM M1015 SAS cards - 30 Watts max
  • 1 Intel pt/1000 dual nic pci-x 10 watt max

Total: 531 max

But I know the system will never really run anywhere near that load. I plan on using the cool and quiet features provided by the microarch.

Is this PSU sufficient or should I go for more power? (I know my max is over this, I was definitely liberal with my estimation. 20 watts a SATA HDD is pretty generous IMO)

I have a 700watt one sitting around but it is not a green PSU by any means and I am really looking to be efficient as possible as I plan on leaving it up 24/4 and I am fronting the power.

Let me know what you guys think about this set up and if I should do!

  • Besides comparing total watts, you should also compare individual voltage rails. Find a way to stagger start the harddrives. The max current draw on the 12V line by a HDD is when they spin up, so do not allow all drives to spin up at once. – sawdust Oct 30 '12 at 9:08
  • the IBM m1015 cards support staggering the hdd spin-ups =) – rbarrette Oct 30 '12 at 13:03

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