Have a ML150 G6 and a P410 RAID controller installed in a Win 2008 R2 server. The P410 has a single cage with 4x 146GB 10K SAS drives. I want to add a second cage for 4x SATA drives that are currently on the B110I Software controller on a non-hot plug cage.
In reading the requirements from the ML150 G6 spec sheet (http://h18004.www1.hp.com/products/quickspecs/13249_na/13249_na.pdf), here is what is required.;
NOTE: Support for more than 4 hard drives requires the purchase of one (1) Hot-plug hard drive cage (P/N: 487737-B21), one (1) HP 750W Common Slot Gold Hot Plug Power Supply Kit (P/N: 512327-B21), one (1) Redundant Power Supply Enablement Kit (P/N: 508544-B21) and HP Smart Array P410 Controller (if not already part of the configuration).
The spec sheet mentions the mini-SAS cable later in the document.
I am curious why the secondary power supply & kit is required? I see that people generally buy another P410(i) instead of adding support for a 2nd cage. Is that the recommendation? Is a SAS expander needed? I am seeking more clarification on HP's elusive upgrade path on hardware.
I have no more PCI-E slots available unless I upgrade the two NC360T's to a single NC364T which is why I prefer no additional cards.