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тАО12-10-2002 05:39 AM
тАО12-10-2002 05:39 AM
Is it possible to connect both FC10's to both machines without getting into trouble? The documentation was not totally clear about it and I'm quite new to fibre-channel.
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тАО12-10-2002 06:18 AM
тАО12-10-2002 06:18 AM
Re: Connecting FC10's to 2 machines
- you should have rotary switch set to the same value for BOTH LCCs in the FC10;
- you can not connect BOTH LCC in one FC-AL (arbitrated loop) because their addresses (alpas) are the same and disks alpas will be the same too, so there will be a conflict. If you will connect these LCCs into switch (not hub!) which is not in quickloop mode then it's ok;
- if both servers will see disks at one time then you should NOT mount volumes in r/w mode at both servers or use clustering software (MC/SG).
As soon as one FC10 has only one LCC how do you think to connect it to 2 servers? Using FC hub?
Eugeny
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тАО12-10-2002 06:28 AM
тАО12-10-2002 06:28 AM
Re: Connecting FC10's to 2 machines
So there should be an extra LCC to make it possible?
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тАО12-10-2002 06:56 AM
тАО12-10-2002 06:56 AM
Re: Connecting FC10's to 2 machines
With another FC10 there are some possibilities:
- connect one LCC to one server and another to another server, btu then need to install MC/SG for shared storage or set sharing up using LVM only;
- connect FC10's LCCs to different FC HBAs within one host. Then you'll have redundancy (2 paths to each disks)
If you would construct cluster on FC10 you need hubs/switches: FC10 connects to one hub by one LCC and to another hub by second LCC, then each server connects by one FC HBA to one hub and by second FC HBA to second hub. That's classic...
Eugeny
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тАО12-10-2002 07:22 AM
тАО12-10-2002 07:22 AM
Re: Connecting FC10's to 2 machines
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тАО12-10-2002 07:35 AM
тАО12-10-2002 07:35 AM
SolutionEugeny