Petr "Qaxi" Klíma wrote:
> Farkas Levente napsal(a):
>> hi,
>> we've a few 10-20 server in a lan each has 4-8 hdd. we'd like to create
>> one big file server on these server hard disks and we'd like to create
>> it in a redundant way ie:
>> - if one (or more) of the hdd or server fails the whole filesystem still
>> usable and consistent.
>> - any server in this farm can see the same storage/filesystem.
>> it's someting a big network raid5-6... storage where we have about
>> 40<partition added to the same network volume. and there is an fs over
>> it which hide all internal network raid functionality.
>> is there any such solution? i can't find any way to do this on our
>> linux servers.
>>
> what about souch FS blocks path
>
> server->gfs->LVM-> raid1(disc0)-> iscsi
> initiator->local-eth0->LANswitch0->remote-eth0->iscsi-target-on_file_server0->LVM->raid(1,5,6,...)->HDD(1,2,3,4,......)
>
> \->LVM-> raid1(disc1)-> iscsi
> initiator->local-eth1->LANswitch1->remote-eth0->iscsi-target-on_file_server1->LVM->raid(1,5,6,...)->HDD(1,2,3,4,......)
>
> \-------------||----------------
>
> in souch setup you have no single point of failure
>
> bacause of money you can decrease number of switches (FE to 2 and
> connect each server and FS to both of them)
>
>
> If you do not need concurent access from 1+ servers to one fs
> (partition, logicalvolume, same file ...) you do not need gfs ..
>
sorry this graph is a bit complicated:-(
how comes the iscsi into this image? iscsi under raid?
can you explain it a bit more detailed?
thanks.
--
Levente "Si vis pacem para bellum!"
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