[Lustre-discuss] Hardware Question

[Aaron Knister]

Make that 6x 9.7TB luns.

On Oct 5, 2007, at 1:11 PM, Aaron Knister wrote:

> 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
>>
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>
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