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memory upgrade

 
Asim_5
Frequent Advisor

memory upgrade

Hi All

we are planning to upgrade a memory of the server rp7410. Is there any specific sequence for upgrading, means do we have to use all the DIMMS of the same size or it can be of different sizes.
6 REPLIES 6
Naveej.K.A
Honored Contributor

Re: memory upgrade

the memory goes in pairs and each module has to be of the same size

regds
Naveej
practice makes a man perfect!!!
Asim_5
Frequent Advisor

Re: memory upgrade

Hi naveej

is there any technical document or link regarding memory upgrade of rp7410 specifing this.

Jeff Schussele
Honored Contributor

Re: memory upgrade

Hi Asim,

DIMMs must be installed in pairs of the same size. Although it's not mandatory that they all be the same, it's *highly* recommended that they be the same & spread evenly across both cell boards - if you have two.

Here's a link to the User's Guide:

http://www.docs.hp.com/hpux/onlinedocs/2461/A6752-96008.pdf

It has the part numbers for the diff sizes of DIMMs.

Rgds,
Jeff
PERSEVERANCE -- Remember, whatever does not kill you only makes you stronger!
Joshua Scott
Honored Contributor

Re: memory upgrade

Whoa!

rp7410 memory is in "quads".

If you look on the cell board, there is a diagram explaining what order to put them in. All DIMMs in a quad must be the same size. Also, making all of the quads the same will increase memory interleaving and thus, speed.

Josh
What are the chances...
Jeff Schussele
Honored Contributor

Re: memory upgrade

I stand corrected.
Guess I hadn't had enough coffee yet this morning ;^))

Thanks for the sanity check Josh.
rp7410s do indeed populate RAM in quads.

Following are part numbers for DIMMs shown in the User's guide:

1GB DIMM (single) A6098AX A6098-69001
512MB DIMM (single) A6097AX A6097-69001
256MB DIMM (single) A6802AX A6802-69001

First number is replacement & second, exchange.

Rgds,
Jeff
PERSEVERANCE -- Remember, whatever does not kill you only makes you stronger!
Joshua Scott
Honored Contributor

Re: memory upgrade

To add to jeff's list of PNs, the A6100A is for the 2048MB DIMM (8GB Module)

Josh
What are the chances...