[HPADM] [SUMMARY] Anyone using Fibre Disk Unit DS2405?

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To: hpux-admin@dutchworks.nl
Date: Tue, 2 Mar 2004 15:37:22 -0500

Admins,

Thx to those who responded....

John Adams
Craig Johnson
Tom Myers
Marc Ahrendt

Regards,
Dave A

-----Original Message-----

Admins,

I've just purchased a Fiber DS2405 (JBOD) unit....dual
Controllers.... and will connect it to my 'new' RP5470 (with 2
HBA's)... 11i/Dec 2003 patches.

The 2405 has 8 drives, and I plan to mirror the LV's.. ending up with
4 big LV's ....pretty basic stuff.... I would think PV links are in order
for the redundant paths.

Now, this is my first Fibre Channel unit *ever* on an HP. I'm
reading the manual :)) to familiarize myself with the Hardware Path and
disk addressing standards for the FC disks....

 Do I have to use any FC specific configuration utilities? ...or is
the LVM configuration all that is necessary, once the HW is seen by ioscan?

Any setup or configuration info is appreciated....

-------------------------------------------------------------------------------------------

Here's some excerpts from the replies:

The big "gotcha" is always the driver for the fibre channel cards, but
that got better after 11i, so you should be fine.

Once the devices are seen, you manage them just like SCSI disks, with
the LVM tools.

About the only new tool you really need is fcmsutil, and that's just to
check the status of the fibre channel card devices since they don't
understand lssf.

---------------------------------

Just make sure the FC MICS are tightly snapped together. I had a problem
with a FC based Network Appliance where I simply bumped a cable and took it
down for half a day. Didn't realize the connector wasn't installed
correctly. Easy to miss.

----------------------------------

We also added a ds2405 to an rp5470. Once the current drivers were
installed for the HBAs, the drives looked just like any other JBOD (with
redundant paths). We used alternate device names when building the volume
group so the primary connection to half the drives comes through each HBA
(even to one, odd to the other). Since it was for an Oracle database, we
used extent striping across all the spindles, hence the two PVGs for
mirroring.

$ vgdisplay -v vg02
--- Volume groups ---
VG Name /dev/vg02
VG Write Access read/write
VG Status available
Max LV 16
Cur LV 6
Open LV 6
Max PV 16
Cur PV 12
Act PV 12
Max PE per PV 40960
VGDA 24
PE Size (Mbytes) 8
Total PE 26028
Alloc PE 26024
Free PE 4
Total PVG 2
Total Spare PVs 0
Total Spare PVs in use 0

   --- Physical volumes ---
   PV Name /dev/dsk/c4t0d0
   PV Name /dev/dsk/c5t0d0 Alternate Link
   PV Status available
   Total PE 2169
   Free PE 0
   Autoswitch On

   PV Name /dev/dsk/c4t2d0
   PV Name /dev/dsk/c5t2d0 Alternate Link
   PV Status available
   Total PE 2169
   Free PE 0
   Autoswitch On

   PV Name /dev/dsk/c4t4d0
   PV Name /dev/dsk/c5t4d0 Alternate Link
   PV Status available
   Total PE 2169
   Free PE 0
   Autoswitch On

   PV Name /dev/dsk/c4t6d0
   PV Name /dev/dsk/c5t6d0 Alternate Link
   PV Status available
   Total PE 2169
   Free PE 0
   Autoswitch On

   PV Name /dev/dsk/c4t8d0
   PV Name /dev/dsk/c5t8d0 Alternate Link
   PV Status available
   Total PE 2169
   Free PE 1
   Autoswitch On

   PV Name /dev/dsk/c4t10d0
   PV Name /dev/dsk/c5t10d0 Alternate Link
   PV Status available
   Total PE 2169
   Free PE 1
   Autoswitch On

   PV Name /dev/dsk/c5t1d0
   PV Name /dev/dsk/c4t1d0 Alternate Link
   PV Status available
   Total PE 2169
   Free PE 0
   Autoswitch On

   PV Name /dev/dsk/c5t3d0
   PV Name /dev/dsk/c4t3d0 Alternate Link
   PV Status available
   Total PE 2169
   Free PE 0
   Autoswitch On

   PV Name /dev/dsk/c5t5d0
   PV Name /dev/dsk/c4t5d0 Alternate Link
   PV Status available
   Total PE 2169
   Free PE 0
   Autoswitch On

   PV Name /dev/dsk/c5t7d0
   PV Name /dev/dsk/c4t7d0 Alternate Link
   PV Status available
   Total PE 2169
   Free PE 0
   Autoswitch On

   PV Name /dev/dsk/c5t9d0
   PV Name /dev/dsk/c4t9d0 Alternate Link
   PV Status available
   Total PE 2169
   Free PE 1
   Autoswitch On

   PV Name /dev/dsk/c5t11d0
   PV Name /dev/dsk/c4t11d0 Alternate Link
   PV Status available
   Total PE 2169
   Free PE 1
   Autoswitch On

   --- Physical volume groups ---
   PVG Name DS_vg02a
   PV Name /dev/dsk/c4t0d0
   PV Name /dev/dsk/c4t2d0
   PV Name /dev/dsk/c4t4d0
   PV Name /dev/dsk/c4t6d0
   PV Name /dev/dsk/c4t8d0
   PV Name /dev/dsk/c4t10d0
   PV Name /dev/dsk/c5t0d0
   PV Name /dev/dsk/c5t2d0
   PV Name /dev/dsk/c5t4d0
   PV Name /dev/dsk/c5t6d0
   PV Name /dev/dsk/c5t8d0
   PV Name /dev/dsk/c5t10d0

   PVG Name DS_vg02b
   PV Name /dev/dsk/c5t1d0
   PV Name /dev/dsk/c5t3d0
   PV Name /dev/dsk/c5t5d0
   PV Name /dev/dsk/c5t7d0
   PV Name /dev/dsk/c5t9d0
   PV Name /dev/dsk/c5t11d0
   PV Name /dev/dsk/c4t1d0
   PV Name /dev/dsk/c4t3d0
   PV Name /dev/dsk/c4t5d0
   PV Name /dev/dsk/c4t7d0
   PV Name /dev/dsk/c4t9d0
   PV Name /dev/dsk/c4t11d0

$ lvdisplay /dev/vg02/lvol1
--- Logical volumes ---
LV Name /dev/vg02/lvol1
VG Name /dev/vg02
LV Permission read/write
LV Status available/syncd
Mirror copies 1
Consistency Recovery MWC
Schedule parallel
LV Size (Mbytes) 17352
Current LE 2169
Allocated PE 4338
Bad block on
Allocation PVG-strict/distributed
IO Timeout (Seconds) default

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