Re: Disk failure

GREAT idea Neil,

I remember YEARS ago problems with the, gee, forget the model, but our CE came
out with a serial number list and checked a BUNCH of our drives and there WERE
drives that got replaced...

Chuck

Neil Palmer wrote:

> For those of you who have had failures, why not post the serial numbers of
> the bad disks ?
> If the record of the replaced disk hasn't been manually deleted from the
> records, you should find it/them listed as "Not detected" when you do
> DSPHDWRSC *STG.  Take option 9 to display resources associated with the
> disk controller, then a 7 to see the serial numbers of the replaced
> drives.
>
>                           Display Storage Resources
> Type options, press Enter.
>   7=Display resource detail   9=Display associated resources
>
> Opt  Resource        Type  Status                Text
>      CMB01           675A  Operational           Combined function IOP
>  9     DC01          2740  Operational           Disk Storage Controller
>
>                          Display Associated Resources
> Type options, press Enter.
>   5=Display configuration descriptions   7=Display resource detail
>
> Opt  Resource        Type-model  Status                Text
>      DC01             2740-001   Operational           Disk Storage
> Controller
>        DD005          6717-074   Operational           Disk Unit
>  7     DD004          6717-074   Not detected          Disk Unit
>        DD003          6717-074   Operational           Disk Unit
>        DD002          6717-074   Operational           Disk Unit
>        DD001          6717-074   Operational           Disk Unit
>        OPT01          6321-002   Operational           Optical Storage
> Unit
>        TAP01          6383-001   Operational           Tape Unit
>
> Maybe we can compile a list of bad serial numbers, which may help you
> determine if your disks are in that range.  It would also help to list the
> serial number of the replacement drive that is now reporting is the same
> device position, as in theory the replaced ones should be from a good
> "batch" so that may help come up with a list of "safe" serial numbers.
>
> I load the load source drive on a 170 that was installed in January.  Lost
> it about 3 weeks after install.  Saved by RAID-5.
> This was before the recent HIPER disk PTF's.  Have those applied now and
> have no trouble since.
> For anyone who HASN'T yet applied the HIPER disk PTF's - what's your
> excuse ?
> Feeling lucky punk ?
> Waiting for the DASD Fairy to visit and do it for you ?   ;-)
> It's possible that the latest disk microcode PTF's solve the problem, and
> it may not actually be bad hardware.
> (Again, speculation based on the fact they won;t tell us the full story,
> but that may be why Rochester is unwilling to provide information on the
> problem, as that would indicate they are at fault and not the disk units).
>
> I'm presuming everyone is only having problems with the 6717's ?
> Here's a suggested chart.  I'll start off:
>
> Disk    Device          Defective       Replaced
> Type    Position        Drive s/n       Drive s/n
>                         (Not detected)  (Operational)
> 6717    L01             68-0CB869F      68-96221
>
> Were HIPER disk PTF's applied at time of failure ?              No
> Assuming you have now applied them, any failure since ? No
>
> PS - Anyone have a list of the country codes IBM uses to identify where
> hardware was manufactured ?
> For example, 10 is the US,  I believe 44 is Italy, and 78 Mexico. (These
> are the common prefixes for AS/400/iSeries serial numbers).
> >From looking at a couple of 170's we have I see 6717 drives with prefixes
> of 68, 75 & 33.
> Al was speculating that the defective drives (if it is the drives) were
> from Singapore.  Anyone know if one of these 3 prefixes is for Singapore ?
> The other 3 drives in my system all have serial numbers with a 75 prefix,
> and I haven't had any trouble from them.
>
> PPS - I noticed my defective and replacement load source drives reported
> as part # 34L9195, but the other 3 drives show part # 07N3185
> I checked another of our 170's, and a customer 150, and all 4 of the 6717
> drives on both systems showed as part # 07N3185.
>
> ...Neil
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