03-16-2011 07:40 AM
03-16-2011 08:05 AM
Are you mixing memory types or capacities? (Lower- or higher-powered DIMMs? Stacked or unstacked?)
Installing DIMMs in sets of four?
Are the sets the same size across the arrays? When you get to sets 4 and 5, those have to be the same size as sets 0 and 1, respectively.
Is the memory known to be good?
Have these servers ever worked, in your experience?
32 gigabytes max? I'd forgotten how little memory these things hold.
03-16-2011 08:26 AM
03-16-2011 09:49 AM
That Adobe doc has, on pages 6&7 memory configuration guidelines:
o DIMMs in an array must be the same size and type. For example, suppose you have populated Sets 0, 1, 2, and 3. When you populate Set 4, the DIMMs must be the same
size and type as those installed in Set 0. Similarly, Set 5 must be populated with the same size and type of DIMMs as are in Set 1, and so on, as indicated in the following
0 Set 0 and Set 4
1 Set 1 and Set 5
2 Set 2 and Set 6
3 Set 3 and Set 7
o For optimum memory utilization and performance, memory DIMMs should be installed in the following order: 0, 1, 2, 3, 4, 6, 5, and 7.
I'll agree that this doesn't sound at first like a DIMM mismatch issue, but its good info to have for reference.
For starters I'd drop back to original configuration after reseating the DIMMs on each individual MMB and then reseat each MMB in the system. If that fails I'd pull the MMBs out and try self-test with zero memory. I remember that our lab's ES45s were really painfully sensitive to any modifications I made so installing or changing giblets always required several attempts to get it just right. Sometimes it took more than one power cycling event to get one or both of them stable.
Which reminds me... Are you relying on the "power switch" on the front panel only or are you literally pulling the plug(s) at the back? I'd pull the physical plug before static strapping and attempting any reconfig.
03-16-2011 10:37 AM
>>> For optimum memory utilization and performance, memory DIMMs should be installed in the following order: 0, 1, 2, 3, 4, 6, 5, and 7.
The ES-45 has best memory performance with symetrical memory options in powers of 2. To get the full performance benefit of interleaving memory, you want to go from 4gb to 8gb of memory. The standard "It Depends" applies for your application and users on whether this will be a noticeable performance hit or not.
03-16-2011 10:47 AM
10-31-2012 12:34 PM
I know this is more than year old thread, but I have same problem.
Couple of ES45 with 2CPUs and 2GB RAM (total) pair of 256MB in each MMB.
I have pulled out MMB3 to check memory modules - I got servers yesterday and know nothing about them except HDDs and PSUs.
When I put MMB3 back I'm getting Error during check on MMB1 and MMB3 and total RAM is only 1GB.
I have tried changing modules and switching MMBs but everytime I got error on MMB1 and 3. Before pulling MMB3 out everything was working fine.
Thank you for any help.