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SilkWorm 4900 won't boot from hda2 but will boot from hda1

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  • 1.  SilkWorm 4900 won't boot from hda2 but will boot from hda1

    Posted 12-30-2014 02:57 AM

    Hello fellow SAN admins and seasons greetings to you all.

    Since this is my first post here, let me introduce myself.

     

    My name is Christos and I am a UNIX and storage/backup admin in a small ISP in my country, Greece.

     

    The other day, we had a power loss in one of our datacenters.

    After power came back, one of our 4900 switches was left with all it's LEDs amber.

     

    Here is the printenv:

     

    > printenv
    AutoLoad=yes
    ENET_MAC=00051E03D339
    InitTest=MEM()
    LoadIdentifiers=Fabric Operating System;Fabric Operating System
    OSLoadOptions=quiet;quiet
    OSLoader=ATA()0x91950;ATA()0xee77
    OSRootPartition=hda2;hda1
    SkipWatchdog=yes

     

    The switch could not boot with these settings.

    Here is the outpout from the console:

    > boot ATA()0x91950
    Booting "Manually selected OS" image.
    Entry point at 0x01000000 ...
    
    Linux/PPC load: 
    Uncompressing Linux...done.
    Now booting the kernel
    Linux version 2.4.19 (swrel@sith) (gcc version 2.95.3 20010112 (prerelease)) -n #1 Tue Oct 3 21:06:25 PDT 2006
    cpld_init: platform (44) not supported
    Brocade Silkworm port (C) 2002 MontaVista Software, Inc. (source@mvista.com)
    On node 0 totalpages: 65536
    zone(0): 4096 pages.
    zone (0): min(32), low(160), high (256)
    zone(1): 61440 pages.
    zone (1): min(480), low(2400), high (3840)
    zone(2): 0 pages.
    Kernel command line: 
    Set up jiffies counter to wrap in 0 seconds.
    Calibrating FIT timer... running at 3058 Hz. [TSR_FP=1]
    Calibrating delay loop... 599.65 BogoMIPS
    Memory: 253236k available (1784k kernel code, 1100k data, 76k init, 0k highmem)
    Dentry cache hash table entries: 32768 (order: 6, 262144 bytes)
    Inode cache hash table entries: 16384 (order: 5, 131072 bytes)
    Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
    Buffer-cache hash table entries: 16384 (order: 4, 65536 bytes)
    Page-cache hash table entries: 65536 (order: 6, 262144 bytes)
    POSIX conformance testing by UNIFIX
    PCI: Probing PCI hardware
    Unknown bridge resource 2: assuming transparent
    PCI: moved device 00:01.0 resource 2 (101) to 1400
    Linux NET4.0 for Linux 2.4
    Based upon Swansea University Computer Society NET3.039
    Initializing RT netlink socket
    Starting kswapd
    Journalled Block Device driver loaded
    SGI XFS with no debug enabled
    i2c-core.o: i2c core module version 2.6.3 (20020322)
    i2c-dev.o: i2c /dev entries driver module version 2.6.3 (20020322)
    i2c-proc.o version 2.6.3 (20020322)
    pty: 256 Unix98 ptys configured
    Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled
    ttyS00 at 0xfdfea300 (irq = 1) is a 16550A
    ttyS01 at 0xfdfe9200 (irq = 0) is a 16550A
    PPC 405 watchdog driver v0.5. (Timer driven)
    IBM gpio driver version 07.25.02
    GPIO #0 at 0xd1000700
    SWBD Platform Driver v1.0: [type 44, rev 1].
    Config Silkworm 
    Uniform Multi-Platform E-IDE driver Revision: 6.31
    ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
    cpld_ide_init_hwif_ports: dp=0, cp=0, hw=c0365f08
    read cpld_data 0x81
    Silkworm CE-2 CPLD ATA interface configured [CPLD version 1]
    cpld_ide_init_hwif_ports: dp=0, cp=0, hw=c0365f08
    cpld_ide_init_hwif_ports: dp=0, cp=0, hw=c0365f08
    cpld_ide_init_hwif_ports: dp=0, cp=0, hw=c0365f08
    cpld_ide_init_hwif_ports: dp=0, cp=0, hw=c0365f08
    cpld_ide_init_hwif_ports: dp=0, cp=0, hw=c0365f08
    cpld_ide_init_hwif_ports: dp=0, cp=0, hw=c0365f08
    cpld_ide_init_hwif_ports: dp=0, cp=0, hw=c0365f08
    hda: SMART CF, ATA DISK drive
    ide0 at 0xd30151f0-0xd30151f7,0xd30153f6 on irq 28
    hda: 1022112 sectors (523 MB) w/1KiB Cache, CHS=1014/16/63
    Partition check:
     hda: hda1 hda2
    RAMDISK driver initialized: 16 RAM disks of 50000K size 1024 blocksize
    loop: loaded (max 8 devices)
    eth0: ZMII bridge in RMII mode
    eth0: Phy @ 0x1, type BCM5221 (0x004061e4)
    eth0: IBM OCP 10/100 Mbps ethernet: EMAC0, MAC 00:05:1e:03:d3:39
    eth0: Tx/Rx Interrupt mitigation (1500 pps)
    eth1: ZMII bridge in RMII mode
    eth1: Read error on PHY 0x02, register 2
    eth1: PHY 0x02 not found
    ATA polled-mode panic dumper on char-major-252.
    silkworm: Using SWBD34 flash configuration
    Creating 6 MTD partitions on "Boot flash":
    0x00000000-0x00020000 : "bootenv0: boot environment (1)"
    0x00020000-0x00040000 : "bootenv1: boot environment (2)"
    0x00040000-0x00200000 : "prom0: boot prom (1)"
    0x00200000-0x003c0000 : "prom1: boot prom (2)"
    0x003c0000-0x003e0000 : "unused"
    0x003e0000-0x00400000 : "bootsel: boot prom selector"
    mtdchar: write-caching enabled
    iic0: IBM on-chip iic adapter module 2003.15.08
    iic1: IBM on-chip iic adapter module 2003.15.08
    cpld_write_register: Cannot access CPLD. Initialization needed
    cpld_write_register: Cannot access CPLD. Initialization needed
    iic1: Registered I2C mux callback for SWBD44
    M41T11 Real-time-clock Driver v1.1
    m41t11: Called to probe for bus IIC-0
    m41t11: I2C Real-Time-Clock detected on iic0 addr 0x68
    NET4: Linux TCP/IP 1.0 for NET4.0
    IP Protocols: ICMP, UDP, TCP, IGMP
    IP: routing cache hash table of 2048 buckets, 16Kbytes
    TCP: Hash tables configured (established 16384 bind 16384)
    Linux IP multicast router 0.06 plus PIM-SM
    ip_tables: (C) 2000-2002 Netfilter core team
    NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
    RAMDISK: ext2 filesystem found at block 0
    RAMDISK: Loading 2603 blocks [1 disk] into ram disk... done.
    Freeing initrd memory: 2603k freed
    VFS: Mounted root (ext2 filesystem).
    Attempting to find a root file s hda:ystem on hda2... hda1
     hda2
     hda: hda1 hda2
    kjournald starting.  Commit interval 5 seconds
    EXT3-fs warning: mounting fs with errors, running e2fsck is recommended
    EXT3 FS 2.4-0.9.17, 10 Jan 2002 on ide0(3,2), internal journal
    EXT3-fs: mounted filesystem with ordered data mode.
     hda: hda1 hda2
     hda: hda1 hda2
    kjournald starting.  Commit interval 5 seconds
    EXT3-fs: mounted filesystem with ordered data mode.
    VFS: Mounted root (ext3 filesystem) readonly.
    Trying to move old root to /initrd ... okay
    Freeing unused kernel memory: 76k init
    INIT: version 2.78 booting
    EXT3-fs warning: mounting fs with errors, running e2fsck is recommended
    EXT3 FS 2.4-0.9.17, 10 Jan 2002 on ide0(3,2), internal journal
    kjournald starting.  Commit interval 5 seconds
    EXT3 FS 2.4-0.9.17, 10 Jan 2002 on ide0(3,1), internal journal
    EXT3-fs: mounted filesystem with ordered data mode.
    INIT: Entering runlevel: 3
    eth0: Link status change: Link Down.
    eth0: Link status change: Link Up. 100 Mbps Full duplex Auto (autonegotiation complete).
    
    INITCP: MB CPLD Vers: 0x81 DC CPLD Vers: 0x82 Image ID: 0x1f
    /bin/mknod: wrong number of arguments
    Try `/bin/mknod --help' for more information.
    /bin/mknod: wrong number of arguments
    Try `/bin/mknod --help' for more information.
    /bin/mknod: wrong number of arguments
    Try `/bin/mknod --help' for mor

     

    After that, I swaped hda2 with hda1 in the OSRootPartition (OSRootPartition=hda1;hda2)

    and the switch boots now normaly.

    The system is coming up, please wait...
    Read board ID of 0x88 from addr 0x23
    Read extended model ID of 0x1d from addr 0x22
    Matched board/model ID to platform index 8
    
    Read board ID of 0x88 from addr 0x23
    Read extended model ID of 0x1d from addr 0x22
    Matched board/model ID to platform index 11
    Checking system RAM - press any key to stop test
    
    Checking memory address: 00100000
    
    System RAM test using Default POST RAM Test succeeded.
    
    Press escape within 4 seconds to enter boot interface.
    
    1) Start system.
    2) Recover password.
    3) Enter command shell.
    
    Option? 3
    
    Boot PROM password has not been set.
    > setenv OSRootPartition=hda1;hda2
    > saveenv
    > boot ATA()0x91950
    Booting "Manually selected OS" image.
    Entry point at 0x01000000 ...
    
    Linux/PPC load: 
    Uncompressing Linux...done.
    Now booting the kernel
    Linux version 2.4.19 (swrel@sith) (gcc version 2.95.3 20010112 (prerelease)) -n #1 Tue Oct 3 21:06:25 PDT 2006
    cpld_init: platform (44) not supported
    Brocade Silkworm port (C) 2002 MontaVista Software, Inc. (source@mvista.com)
    On node 0 totalpages: 65536
    zone(0): 4096 pages.
    zone (0): min(32), low(160), high (256)
    zone(1): 61440 pages.
    zone (1): min(480), low(2400), high (3840)
    zone(2): 0 pages.
    Kernel command line: 
    Set up jiffies counter to wrap in 0 seconds.
    Calibrating FIT timer... running at 3058 Hz. [TSR_FP=1]
    Calibrating delay loop... 599.65 BogoMIPS
    Memory: 253236k available (1784k kernel code, 1100k data, 76k init, 0k highmem)
    Dentry cache hash table entries: 32768 (order: 6, 262144 bytes)
    Inode cache hash table entries: 16384 (order: 5, 131072 bytes)
    Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
    Buffer-cache hash table entries: 16384 (order: 4, 65536 bytes)
    Page-cache hash table entries: 65536 (order: 6, 262144 bytes)
    POSIX conformance testing by UNIFIX
    PCI: Probing PCI hardware
    Unknown bridge resource 2: assuming transparent
    PCI: moved device 00:01.0 resource 2 (101) to 1400
    Linux NET4.0 for Linux 2.4
    Based upon Swansea University Computer Society NET3.039
    Initializing RT netlink socket
    Starting kswapd
    Journalled Block Device driver loaded
    SGI XFS with no debug enabled
    i2c-core.o: i2c core module version 2.6.3 (20020322)
    i2c-dev.o: i2c /dev entries driver module version 2.6.3 (20020322)
    i2c-proc.o version 2.6.3 (20020322)
    pty: 256 Unix98 ptys configured
    Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled
    ttyS00 at 0xfdfea300 (irq = 1) is a 16550A
    ttyS01 at 0xfdfe9200 (irq = 0) is a 16550A
    PPC 405 watchdog driver v0.5. (Timer driven)
    IBM gpio driver version 07.25.02
    GPIO #0 at 0xd1000700
    SWBD Platform Driver v1.0: [type 44, rev 1].
    Config Silkworm 
    Uniform Multi-Platform E-IDE driver Revision: 6.31
    ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
    cpld_ide_init_hwif_ports: dp=0, cp=0, hw=c0365f08
    read cpld_data 0x81
    Silkworm CE-2 CPLD ATA interface configured [CPLD version 1]
    cpld_ide_init_hwif_ports: dp=0, cp=0, hw=c0365f08
    cpld_ide_init_hwif_ports: dp=0, cp=0, hw=c0365f08
    cpld_ide_init_hwif_ports: dp=0, cp=0, hw=c0365f08
    cpld_ide_init_hwif_ports: dp=0, cp=0, hw=c0365f08
    cpld_ide_init_hwif_ports: dp=0, cp=0, hw=c0365f08
    cpld_ide_init_hwif_ports: dp=0, cp=0, hw=c0365f08
    cpld_ide_init_hwif_ports: dp=0, cp=0, hw=c0365f08
    hda: SMART CF, ATA DISK drive
    ide0 at 0xd30151f0-0xd30151f7,0xd30153f6 on irq 28
    hda: 1022112 sectors (523 MB) w/1KiB Cache, CHS=1014/16/63
    Partition check:
     hda: hda1 hda2
    RAMDISK driver initialized: 16 RAM disks of 50000K size 1024 blocksize
    loop: loaded (max 8 devices)
    eth0: ZMII bridge in RMII mode
    eth0: Phy @ 0x1, type BCM5221 (0x004061e4)
    eth0: IBM OCP 10/100 Mbps ethernet: EMAC0, MAC 00:05:1e:03:d3:39
    eth0: Tx/Rx Interrupt mitigation (1500 pps)
    eth1: ZMII bridge in RMII mode
    eth1: Read error on PHY 0x02, register 2
    eth1: PHY 0x02 not found
    ATA polled-mode panic dumper on char-major-252.
    silkworm: Using SWBD34 flash configuration
    Creating 6 MTD partitions on "Boot flash":
    0x00000000-0x00020000 : "bootenv0: boot environment (1)"
    0x00020000-0x00040000 : "bootenv1: boot environment (2)"
    0x00040000-0x00200000 : "prom0: boot prom (1)"
    0x00200000-0x003c0000 : "prom1: boot prom (2)"
    0x003c0000-0x003e0000 : "unused"
    0x003e0000-0x00400000 : "bootsel: boot prom selector"
    mtdchar: write-caching enabled
    iic0: IBM on-chip iic adapter module 2003.15.08
    iic1: IBM on-chip iic adapter module 2003.15.08
    cpld_write_register: Cannot access CPLD. Initialization needed
    cpld_write_register: Cannot access CPLD. Initialization needed
    iic1: Registered I2C mux callback for SWBD44
    M41T11 Real-time-clock Driver v1.1
    m41t11: Called to probe for bus IIC-0
    m41t11: I2C Real-Time-Clock detected on iic0 addr 0x68
    NET4: Linux TCP/IP 1.0 for NET4.0
    IP Protocols: ICMP, UDP, TCP, IGMP
    IP: routing cache hash table of 2048 buckets, 16Kbytes
    TCP: Hash tables configured (established 16384 bind 16384)
    Linux IP multicast router 0.06 plus PIM-SM
    ip_tables: (C) 2000-2002 Netfilter core team
    NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
    RAMDISK: ext2 filesystem found at block 0
    RAMDISK: Loading 2603 blocks [1 disk] into ram disk... done.
    Freeing initrd memory: 2603k freed
    VFS: Mounted root (ext2 filesystem).
    Attempting to find a root file s hda:ystem on hda1... hda1
     hda2
     hda: hda1 hda2
    kjournald starting.  Commit interval 5 seconds
    EXT3 FS 2.4-0.9.17, 10 Jan 2002 on ide0(3,1), internal journal
    EXT3-fs: recovery complete.
    EXT3-fs: mounted filesystem with ordered data mode.
     hda: hda1 hda2
     hda: hda1 hda2
    kjournald starting.  Commit interval 5 seconds
    EXT3-fs: mounted filesystem with ordered data mode.
    VFS: Mounted root (ext3 filesystem) readonly.
    Trying to move old root to /initrd ... okay
    Freeing unused kernel memory: 76k init
    INIT: version 2.78 booting
    EXT3 FS 2.4-0.9.17, 10 Jan 2002 on ide0(3,1), internal journal
    kjournald starting.  Commit interval 5 seconds
    EXT3-fs warning: mounting fs with errors, running e2fsck is recommended
    EXT3 FS 2.4-0.9.17, 10 Jan 2002 on ide0(3,2), internal journal
    EXT3-fs: recovery complete.
    EXT3-fs: mounted filesystem with ordered data mode.
    INIT: Entering runlevel: 3
    eth0: Link status change: Link Down.
    eth0: Link status change: Link Up. 100 Mbps Full duplex Auto (autonegotiation complete).
    
    INITCP: MB CPLD Vers: 0x81 DC CPLD Vers: 0x82 Image ID: 0x1f
    
    
    Fabric OS (brocsw1b)
    
    
    brocsw1b console login: uptime: 2424; sysc_qid: 0
    2014/12/30-13:50:49, [HAM-1004], 118,, INFO, SilkWorm4900, Processor rebooted - Reboot
    
    SNMP Research SNMP Agent Resident Module Version 15.3.1.4 
    Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 SNMP Research, Inc.
    sysctrld: all services Standby
    Services starting a COLD recovery
    2014/12/30-13:51:02, [ZONE-1022], 119,, INFO, brocsw1b, The effective configuration has changed to fb1swa.  
    sec0: Security is initializing........
    sysctrld: all services Active
    Starting LBIST on slot 0, id 27...
    
    Completed xsvf execution successfully.
    Lbist completed in 0.062782 seconds on slot 0. 
    POST1: Started running Tue Dec 30 13:51:07 GMT-3 2014
    POST1: Test #1 - Running turboramtest
    POST1: Script PASSED with exit status of 0 Tue Dec 30 13:51:10 GMT-3 2014 took (0:0:3)
    POST2: Started running Tue Dec 30 13:51:11 GMT-3 2014
    POST2: Test #1 - Running portloopbacktest (SERDES)
    POST2: Test #2 - Running minicycle (SERDES)
    POST2: Test #3 - Running minicycle (BI LINKS FE_BI->CORE_BI)
    POST2: Test #4 - Running minicycle (BI LINKS CORE_BI->FE_BI)
    POST2: Running diagshow
    POST2: Script PASSED with exit status of 0 Tue Dec 30 13:53:06 GMT-3 2014 took (0:1:55)
    2014/12/30-13:53:07, [BL-1000], 120,, INFO, brocsw1b, Initializing Ports...
    2014/12/30-13:53:08, [BL-1001], 121,, INFO, brocEnabling switch...
    sw1b, Port Initialization Completed.

     

    My question is how can I fix the hda2?

    Is there a way to copy the good root from hda1 to hda2?

    Will linux tools (dd for instance) work?

     

    Thanks in advance.


    #BrocadeFibreChannelNetworkingCommunity


  • 2.  Re: SilkWorm 4900 won't boot from hda2 but will boot from hda1
    Best Answer

    Posted 12-30-2014 01:15 PM

    Hi Christos,

     

    try the command " firmwarecommit " It syncs both partitions , BUT: save all config and licenses... if the CF-Card inside the chassis is having problems, it could be the worst case that the second partition will fail...

     

    Kind Regards,

     

    meisterdausi

    aka Jochen


    #BrocadeFibreChannelNetworkingCommunity


  • 3.  Re: SilkWorm 4900 won't boot from hda2 but will boot from hda1

    Posted 12-30-2014 01:30 PM

    Thanks Jochen!

    That 's exactly what I needed.

     

    However, I have another ...question now: 

    The file system on hda2 needs fsck. I searched (as root) but the command what nowhere to be found!

     

    Can you help me with this as well?

     

    Cheers.

     

     

     


    #BrocadeFibreChannelNetworkingCommunity


  • 4.  Re: SilkWorm 4900 won't boot from hda2 but will boot from hda1

    Posted 12-30-2014 02:22 PM

    Hi Christos,

     

    i think fsck is only available via command shell. So you need to reboot the switch, hit escape when trhe dialog appears.

     

    Then Option 3 for Command shell, and then you can mount hda2 and run a fsck .

     

    Is the commit telling you, that the filesystem has issues?

     

    Regards,

     

    Jochen


    #BrocadeFibreChannelNetworkingCommunity


  • 5.  Re: SilkWorm 4900 won't boot from hda2 but will boot from hda1

    Posted 12-30-2014 02:38 PM

    Hi Christos,

     

    i started my 4900 (IBM 2005-B64) now, and i see, you don´t have to reboot/restart the box!

     

    Just run fsck /dev/hda2 on the filesystem , but it sould´nt be in use for this...

    The Switch here is telling me that this could cause severe filesystem damage! So use on your own risk :-D

     

    Greetings,

     

    Jochen


    #BrocadeFibreChannelNetworkingCommunity


  • 6.  Re: SilkWorm 4900 won't boot from hda2 but will boot from hda1

    Posted 12-30-2014 03:06 PM

    It's not wise to fsck a mounted filesystem. You'll most likely corrupt it.

    In my case however, I 've booted from hda1, so I can unount the hda2 at my will.

    Alas, there's no fsck command (the binary) in the system.

     

    brocsw1b:root> df -h
    Filesystem            Size  Used Avail Use% Mounted on
    /dev/root             241M  123M  106M  54% /
    /dev/hda2             241M  122M  107M  53% /mnt
    brocsw1b:root> umount /dev/hda2
    brocsw1b:root> df -h
    Filesystem            Size  Used Avail Use% Mounted on
    /dev/root             241M  123M  106M  54% /
    brocsw1b:root> mount /dev/hda2 /mnt
    brocsw1b:root> df -h
    Filesystem            Size  Used Avail Use% Mounted on
    /dev/root             241M  123M  106M  54% /
    /dev/hda2             241M  122M  107M  53% /mnt
    brocsw1b:root> find / -name "fsck"
    brocsw1b:root> find / -name "*fsck"
    brocsw1b:root> find / -name "*fsck*"

     Maybe FOS 5.2.0a lacks the fsck command?

    brocsw1b:admin> firmwareshow
    Primary version: 	v5.2.0a
    Secondary version: 	v5.2.0a

     

     

     


    #BrocadeFibreChannelNetworkingCommunity


  • 7.  Re: SilkWorm 4900 won't boot from hda2 but will boot from hda1

    Posted 12-31-2014 03:13 AM

    Unfortunatelly, firmwarecomit didn't help.

    Still the switch refuses to boot from hda2 :(

     


    #BrocadeFibreChannelNetworkingCommunity


  • 8.  Re: SilkWorm 4900 won't boot from hda2 but will boot from hda1

    Posted 12-31-2014 03:30 AM

    Hmmm...

     

    My Switch is now running v6.0.0 so it´s possible that the command is not implemented...

     

    Does your whole Fabric run on v5.x? Maybe it´s possible to do a firmwareupdate and get the commands to repair the filesystem?

     

    Best regards,

     

    Jochen


    #BrocadeFibreChannelNetworkingCommunity


  • 9.  Re: SilkWorm 4900 won't boot from hda2 but will boot from hda1
    Best Answer

    Posted 12-31-2014 05:16 AM

    Well Jochen, my whole fabric runs on 5.2.0a and 5.1.0a, so no luck there.

     

    However, since it's New Year's eve, and nothing is really happening in terms of workload, I thought nothing better to do than FOS troubleshooting :)

     

    It turned out that the problem was the /usr/bin/cut binary, which gets called from within the /etc/rc.d/init.d/fabos script at various points, in order to create the /dev entries eg: rmajor=`grep raslog /proc/devices | cut -d ' ' -f 1`

    This $rmajor variable was then use to create the /dev/raslog: /bin/mknod -m 666 /dev/raslog c $rmajor 0

    But because cut was corrupted it core dumped and the whole init script was failing....

     

    What I did was to rename the /usr/bin/cut to /usr/bin/cut_CORRUPTED and copy the binary from the other partition, the one that boots ok. Voila!

     

    My switch now boots from both partitions, altough the second one is surely not it it's best shape, but the redundancy is there.

     

    I hope this post will be of benefit to some fellow SAN admin.

     

    BTW: What type/brand is the CF inside these things?


    #BrocadeFibreChannelNetworkingCommunity