[CentOS] Re: SuperMicro X7DBE with CentOS4?
Scott Silva
ssilva at sgvwater.com
Wed Jun 21 18:56:37 UTC 2006
Bowie Bailey spake the following on 6/21/2006 9:46 AM:
> Joshua Baker-LePain wrote:
>> On Tue, 20 Jun 2006 at 5:53pm, Bowie Bailey wrote
>>
>>> Joshua Baker-LePain wrote:
>>>> Is there any reason you're locked into Xeon/FB-DIMM? SuperMicro
>>>> makes many rather nice Opteron boards, with good ol' DDR SDRAM.
>>>> And there aren't many areas where Xeon outperforms Opteron these
>>>> days, if any.
>>> Not really, can you recommend a comparable Opteron MB? I need PCI-X
>>> 133 for the raid card, capability of at least 32MB RAM, and
>>> preferably onboard video and LAN.
>> I'll assume you meant 32GB RAM. ;) In that case, your options
>> become a bit more limited. SM doesn't have any 2 socket Opteron
>> boards with 16 DIMM slots -- they have at most 4 slots/socket. So,
>> to stick with SM, you'd have to either go with 4GB sticks (which, I'm
>> guessing, may well be as pricy as FB-DIMM per GB) or go to a 4 socket
>> board. Either way, you may not get much cost savings, but you'll
>> still likely get a performance boost.
>
> Yea, 32GB... :) I can't actually find any 4GB modules at the moment,
> but I'm sure you're right. The 2GB PC2700 ECC-Reg modules are cheaper
> than the DDR2 ECC-FB modules, but 16GB memory still accounts for
> almost half of the total cost of the server.
>
> I'm only populating it with 16GB to start with, but I want to leave
> myself some headroom to increase it if needed.
>
>> The other option is to go with Tyan. They have the S3892, a dual
>> socket board with 16 DIMM slots.
>
> That looks like a good board. It seems to have everything I need.
>
> The only source I could find for it is memorylabs.com. Anyone know
> anything about them?
>
> Going with the dual Opteron 270 (2.0GHz) rather than the dual Xeon
> 5060 (3.2GHz) and the slightly cheaper RAM saves me about $320.
>
>> As an aside, 3ware now has a PCIe version (the 9590SE) in addition to
>> the PCI-X 9550.
>
> Any advantage to PCIe over PCI-X? I don't really know much about
> either other than that they are both faster than standard PCI.
>
PCI-X is an "upgrade" to PCI, so it carries some compatibility baggage.
PCI-E is designed from the ground up and, being new, doesn't have to keep any
old compatibility. But there are more devices available right now for PCI-X.
That is changing rapidly.
As for performance, I haven't seen the numbers, but PCI-E has nowhere to go
but up.
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