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PDU - selecting the correct one

 
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PDU - selecting the correct one

Hi,

Please can someone clairfy how ones select an appropriate PDU for an HP rack.

I recently configured a rack with 5 ML570s with no additional redundant power with an MSA1000. I used a PDU part number 252663-B24 - Modular mPDU, 16A, High Volt, (2 x 8 extension blocks)) - we are in a 240V power supply country.

A query has now arisen if I should not have rather configured a Modular PDU.40A(Hardwired)(1 Unit + 3x8 C13, 1x4 C19 Extension bar), because the Prolient ML570 has an rated input current of 7.6A, hence multiple ML570s will require more than 16A

If anybody can advise I would appreciate it.

Thankd
Andrew
2 REPLIES
Steven Clementi
Honored Contributor

Re: PDU - selecting the correct one

Andrew:

What about 2 16A HV PDU's? It really comes down to whether or not you can support 1 40AMp hardwired circuit, or if you can afford to put in 2 16 amp circuits, or even 3 or 4 for redundancy (when/if the time comes).

Both PDU's will/should work with an HP rack. Having a single PDU will require less wiring where as having multiple PDU's might provide better power stability/redundancy.

Also, that 7.6Amps for the ML570 sounds kind of high for 240 volts. Is that the correct value or is that for 110 volts? I have not checked the spec sheet, but probably will right after I post this. ;o)

Steven
Steven Clementi
HP Master ASE, Storage and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5)
RHCE
NPP3 (Nutanix Platform Professional)
Steven Clementi
Honored Contributor
Solution

Re: PDU - selecting the correct one

http://h18004.www1.hp.com/products/quickspecs/11421_div/11421_div.html

Look towards the bottom if you have not seen this yet.


Looks like the Input for a fully loaded ML570 is 4.2A at 240 volts, 2.7A for ase server.


Steven
Steven Clementi
HP Master ASE, Storage and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5)
RHCE
NPP3 (Nutanix Platform Professional)