Topic
IC4NOTICE: developerWorks Community will be offline May 29-30, 2015 while we upgrade to the latest version of IBM Connections. For more information, read our upgrade FAQ.
6 replies Latest Post - ‏2012-09-30T09:06:49Z by Novikov_Alexander
Eduman
Eduman
6 Posts
ACCEPTED ANSWER

Pinned topic DS3512 Doesn't accpet/recognize 8GB spped SAN Connection

‏2012-09-16T08:22:00Z |
Hi,

I've been configuring DS3512 (Firmware 10.83) that will connect thru SAN to a BladeCenter H Chassis. First, I set and configure all the volumes, LUNs and Host Mapping on the Storage side, upon zoning the storage to the blade servers, it seems that the port from SAN Switch (Port 0 of Brocade Enterprise 20-port 8 Gb SAN Switch Module for IBM BladeCenter P/N: 42C1828) becomes faulty when I set the connection speed to 'Auto' or '8Gb'. But when I set it to '4Gb' speed, the port becomes healthy, stable and can communicate to storage. Is there an issue between these two? I'm somehow puzzled because the DS3512 is capable of 8Gb speed and so thus the SAN Switch. Can someone enlighten me with this issue I encountered. Or I'm the only one who encountered this issue? I've already mounted the DataStore to the servers and currently using 4Gb speed. But I guess this speed is not the one we expect.

Here are some additional information.
Model: Blade Server HS22 MT 7870
SFP of SAN Switch: (44X1962) Brocade 8 Gb SFP+ SW Optical Transceiver
OS: ESXi 5.0 U1

Attached are some snapshots taken from the SAN Switch.
Updated on 2012-09-30T09:06:49Z at 2012-09-30T09:06:49Z by Novikov_Alexander
  • seb_
    seb_
    25 Posts
    ACCEPTED ANSWER

    Re: DS3512 Doesn't accpet/recognize 8GB spped SAN Connection

    ‏2012-09-16T09:13:48Z  in response to Eduman
    if the switch is accepts it set the fillword mode for the port to 3 using portcfgfillword. if not, update to the latest supported code. meanwhile use fillword mode 0 as a workaround...
    • Eduman
      Eduman
      6 Posts
      ACCEPTED ANSWER

      Re: DS3512 Doesn't accpet/recognize 8GB spped SAN Connection

      ‏2012-09-16T09:32:15Z  in response to seb_
      Hi seb,

      May I know where I can configure or change that value?

      Thanks.
      • seb_
        seb_
        25 Posts
        ACCEPTED ANSWER

        Re: DS3512 Doesn't accpet/recognize 8GB spped SAN Connection

        ‏2012-09-16T13:11:35Z  in response to Eduman
        I would do it in the CLI (could be that you have to enable it first in the bladecenter management module and then login as USERID or admin). The command is

        portcfgfillword port mode

        So for the first external port it would be:

        portcfgfillword 0 3
      • Novikov_Alexander
        Novikov_Alexander
        1404 Posts
        ACCEPTED ANSWER

        Re: DS3512 Doesn't accpet/recognize 8GB speed SAN Connection

        ‏2012-09-18T04:24:32Z  in response to Eduman
        Dear Reginald,

        read the docs:

        H196488: DS3500/DS3950/DS5000 systems not working with Brocade on 8 Gbps host ports - IBM System Storage
        https://www-947.ibm.com/support/entry/myportal/docdisplay?lndocid=migr-5083089

        Supported configurations for 8 Gigabit Fibre Channel - IBM BladeCenter H (7989, 8852)
        https://www-947.ibm.com/support/entry/myportal/docdisplay?lndocid=MIGR-5087103

        Good luck,
        Alexander Novikov
        Russia, Moscow
  • Eduman
    Eduman
    6 Posts
    ACCEPTED ANSWER

    Re: DS3512 Doesn't accpet/recognize 8GB spped SAN Connection

    ‏2012-09-28T10:49:39Z  in response to Eduman
    Hi seb / Alexander,
    Thanks to you guys. The SAN Switch and the DS3512 are now communicating..
    If you will extend more you're help to me, how do I configure the multipathing for both controller A and B? Do I need to configure it on the Storage side (which the preferred controller is A) or on the VM Side?

    Additional info:
    -I already configured and zone both the Controllers A and B. The only thing left for me is to configure the multipathing.

    Hope you can help me again guys.

    Thanks.
    • Novikov_Alexander
      Novikov_Alexander
      1404 Posts
      ACCEPTED ANSWER

      Re: DS3512 Doesn't accpet/recognize 8GB spped SAN Connection

      ‏2012-09-30T09:06:49Z  in response to Eduman
      Hi Reginald,

      you are welcome.

      In most cases (and in your case too) configuring of the multipathing is not needed, just install multypathing software and relax (there are OSs with integrated multipathing software).

      Regards,
      Alexander Novikov
      Russia, Moscow