[Lustre-discuss] Hardware Question

[Aaron Knister]

In what sense does it start thrasing? I'm thinking about building a  
poweredge with 8 cpus and 16GB of mem to handle 3x 9TB luns. Does  
that sound sane?

On Oct 5, 2007, at 1:02 PM, Daniel Leaberry wrote:

>
> Aaron Knister wrote:
>> I'm planning to hang 58 terabytes off of a PowerEdge 1950 with 4  
>> CPUS  and 8 gigs of memory. My MDS is a dual core Opteron with a  
>> 250gig  raid1 metadata volume and 2GB of ram. Do you think this  
>> hardware  configuration is sane?
>>
>> -Aaron
>>
> Depends how much you push your disks. Your waiting on io will shoot  
> up real quick if the disks slow down even a bit. My experience is  
> you'll probably want more machines unless you're not pushing your  
> disks (in which case why run lustre?)
>
> We have about 85TB of disk (in 24 luns) hanging off 4 PE2950's with  
> those same specs. They are set up in failover pairs (each handles 6  
> luns) but I can't run too long on a single machine before it starts  
> thrashing when it takes over the other nodes 6 luns.
>
> Daniel
>
>> _______________________________________________
>> Lustre-discuss mailing list
>> Lustre-discuss at clusterfs.com
>> https://mail.clusterfs.com/mailman/listinfo/lustre-discuss
>>