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One for DK? Memory & Xeon scenario?



Darren S

ClioSport Club Member
First time I've come across this situation....

We've got a HP-Compaq Proliant ML350 G5 running 2x dual core Xeons (5140 spec) that had been running on 4GB memory.

I bought a replacement wedge of memory - 4x 4GB full buffered Kingston sticks and the server has thrown a right paddy.

Looking closer at the HP tech sheets, it appears that there are different flavours of dual core Xeons that have a bearing on how much memory this ML350 G5 can take:-

  • 16GB memory supported on the dual core 5000 and 5100 Xeons
  • 32GB memory supported on the dual core 5200 Xeons
.....and any quad-core Xeon will see 32GB of memory also.

So, because of this slight change in Xeon-spec, it's memory 'visibility' is halved? The mobo has to be maxed-out with 8x 2GB sticks now as it flatly refuses to see even one pairing of 4GB memory.

The final kick in the teeth is the fact that a lower spec ML150 G5 will happily run on 4x 4GB sticks - even though HP's tech docs say that it can't!

I wouldn't mind so much, but it's running SQL 2005 and wanted to try it on 16GB first and then maybe 32GB memory at a later stage as the server O/S is Windows 2003 Enterprise Edition. Just would have been a bonus to have been able to access the full 32GB at a later date.

Feckers. :(

D.
 
  Better than yours. C*nt.
Doesn't work I'm afraid - the first generation dual-core processors won't work with 4GB sticks - hence the 16GB/32GB limits shown. It's not that the processors can't see that much memory, it's that the processors can't work with that density.

And 2003 Enterprise Edition sucks compared to proper 64-bit.
 

Darren S

ClioSport Club Member
Doesn't work I'm afraid - the first generation dual-core processors won't work with 4GB sticks - hence the 16GB/32GB limits shown. It's not that the processors can't see that much memory, it's that the processors can't work with that density.

And 2003 Enterprise Edition sucks compared to proper 64-bit.

Balls. That will teach me to read the small print about the Xeons in future. :)

Couldn't agree more with the x64 comment. We're updating the main SQL server to sit on Windows 2008 x64. The speed hike in testing alone has been impressive with quad-Xeons under the hood.

D.
 

dk

  911 GTS Cab
yeah, bit of a bummer, the g6 ram is even more complicated too.

2k3 ent edition really depends on how much ram you are putting in, to take advantage of 64 bit you really need to be putting a lot of ram in, otherwise the overhead of 64bit makes no difference for smaller amounts and isn't faster.

Its amazing how much software still doesn't support 64 bit though, some HP servers are now coming with 12 gb of ram etc. as a base!
 

Darren S

ClioSport Club Member
yeah, bit of a bummer, the g6 ram is even more complicated too.

2k3 ent edition really depends on how much ram you are putting in, to take advantage of 64 bit you really need to be putting a lot of ram in, otherwise the overhead of 64bit makes no difference for smaller amounts and isn't faster.

Its amazing how much software still doesn't support 64 bit though, some HP servers are now coming with 12 gb of ram etc. as a base!

I find that surprising myself - especially when even entry-level desktops and laptops support 64-bit now. I still really like XP64 as an O/S, though I do think that that was a half-hearted attempt by Microsoft to support 64-bit.

Definitely ahead of its time, imo. Maybe Microsoft should bite the bullet and make Windows 7 purely 64-bit - lol.

D.
 

dk

  911 GTS Cab
HP SIM and vmware vcenter don't support 64 bit which are the two i come across a lot, MS has said that windows 2008 is the last OS they will produce as a 32 bit version, so windows 7 should be 64bit only according to that.
 


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