If I ever have occasion to be near Dubai I will certainly give you a call.
Good luck with your upgrades, please let me know how everything turns out.
> > VK,
> > First - the varyoffvg I spoke of only applies to VG's on SSA drives
> > utilizing the "SSA Fast-Write Cache" feature, so if your rootvg is not
> > SSA, or is but does not have the fast-write" feature turned on, then you
> > should be ok - please see the rest of the post before you do
> > If you have the "fast write cache" option card installed on your SSA
> > (FC 6235) and have the fast-write feature turned on for any drives, you
> > turn it off before you attempt any upgrade of the firmware, or risk the
> > of data.
> > To view/change fast-write settings for drives, use "smitty ssafastw".
> > If you have RAID arrays, you can only turn fast-write on/off for the
> > array hdisk, if you use straight hdisk/pdisk as system drives, then it
> > operates on each hdisk individually.
> > Tip - you can always turn fast-write ON for a drive at any time, but to
> > it OFF is a more lengthy process as described in my earlier post... It
> > becomes a real pain when there is paging on the "fast-writed" device,
> > you need to reboot to de-activate the paging....
> > FYI - if you have the SSA card out of the machine, you can easily see if
> > have the H/W feature - it looks like a standard PCMCIA card inserted on
> > SSA Card - it has warnings about customer data, battery backed
> > data....etc...
> > If there is an empty PCMCIA card slot on the card, then you don't have
> > option, and don't worry about the fast-write....
> > If you want to check the individual cards to see if they have the
> > card installed, you can do a lscfg -vl sssX, and look for the Z1 field
> > whatever shows the "cache= line"). Like this:
> > lscfg -vl ssa0
> > DEVICE LOCATION DESCRIPTION
> > ssa0 1A-08 IBM SSA 160 SerialRAID Adapter
> > (14109100)
> > Part Number................. 09L5695
> > FRU Number.................. 34L5388
> > Serial Number...............S0270160
> > EC Level.................... F23699
> > Manufacturer................IBM053
> > ROS Level and ID............8300 0000
> > Loadable Microcode Level....05
> > Device Driver Level.........00
> > Displayable Message.........SSA-ADAPTER
> > Device Specific.(Z0)........SDRAM=128
> > Device Specific.(Z1)........CACHE=32
> > <========================
> > Device Specific.(Z2)........UID=006094BE0000EA18
> > Device Specific.(YL)........P1-I3/Q1
> > If you were wondering about the Z0 SDRAM line, then this is the scoop -
> > normal cards with no Fast-write come with 64MB SDRAM. If you ever want
> > use the Fast-write option card, *AND* you are going loop drives into 2
> > adapters (dual initiator) for redundancy, then you need the 128MB option
> > 6231) otherwise you will only be able to use 16MB of the 32MB Fastwrite,
> > you will get "SSA Performance Degraded" error messages in the error
> > for ever. Moral: If you do redundant loops w/Fast-Write, spring for
> > extra DRAM.
> > FYI...The adapter above is a 6230 by purchase, but as you can see the
> > firmware also needs to be updated (ROS Level and ID - 8300 is old, AB00
> > the latest I believe)....shame on me.
> > I hope this helps.
> > P.S. - http://www.ibmlink.ibm.com/ussman - look up a 7026, 7017, etc...
> > for Feature codes 6230, 6231, and 6235.
> > Also check the SSA card manuals on:
> > http://www.storage.ibm.com/hardsoft/products/ssa/docs/index.html
> > http://www.storage.ibm.com/hardsoft/products/ssa/docs/sc2_inst.html -
> > is the SerialRAID Adapters install guide - check page 1, chapter 1 for
> > intro to Fast-Write.....
> > Happy upgrading....
> > -D.
> > > > VK,
> > > > A 6230 is the same card as a 6225, but with a free "field" upgrade
> > > > microcode.
> > > > Check with your local CE to have him/her upgrade the card for you.
> > > > Microcode and instructions are at:
> > > > http://www.storage.ibm.com/hardsoft/products/ssa/rs6k/index.html
> > > > If you are brave enough to do it on your own, make sure you read the
> > > > instructions on the IBM website, and the microcode readme's
> > > > carefully....
> > > > We have successfully upgraded all of our 6225 to 6230 with no
> > > > Tips: Unmount filesystems, de-activate paging spaces, and varyoffvg,
> > then
> > > > de-Stage and and all fast-write cache on all adapters before
> > any
> > > > microcode upgrade.
> > > > -D.
> > > > > Can I use SSA Adapter 6225 on IBM RS/6000 P660 (Model 6H1) ?
> > > > > I thought 6225 & 6230 are adapter type 4-P, so I should be able to
> > > > > use. But friend of mine is stating that 6225 will not work on IBM
> > > > > RS/6000 P660 (Model 6H1) ?
> > > > > BTW, what is the difference between 6225 & 6230 ?
> > > > > EnjoyAIX,
> > > > > VK
> > > Dear Dudeman,
> > > Thanks a LOT, surely this will *save* approx. US$20,000 for our SP2
> > > Nodes, F50s and 43Ps. Special thanks for Tips!
> > > What do you mean by 'de-Stage' ?
> > > I can take care for varyofvg for 'user defined Volume Groups' , I have
> > > to take care for rootvg and standard paging space (hd6)?
> > > With Warm Regards,
> > > VK
> Dear Dudeman,
> Again Thanks, at this stage all I can say ,If you wish to visit Dubai
> , the "City Of Gold". IOU please contact me on +9714 301 2183 and I
> will take you to 'Desert Safari'
> V K Agarwal
> Dubai Petroleum Company
> SAP R/3 Support (AIX, DB2/UDB , R/3)