| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 894.1 | Should work.. | SSDEVO::RMCLEAN | | Wed May 28 1997 13:56 | 14 |
| >> I urgently need to know if a HSZ50 with a BA356 will support an RZ26
>> REV T392, it was installed into the storage shelf and none of the
>> RZ29's in the same shelf would work. Is there a problem with the
>> revision of the disk or is it mixing wide and narrow disks in the same
>> shelf. Can the above work ?
>>
>> Regards and thanks.
>>
>> NB: I am aware that the latest rev of RZ26 is T392A but cannot upgrade
>> the firmware and still bring down the system is the combination is
>> wrong. It's a live 24 *356 operation.
Rev T392 is supported for a RZ26-VA. The release notes say that you must have
an 8-bit I/O module for wide drives.
|
| 894.2 | RZ26: Wide Compatible? | UTRTSC::VISSER | | Wed May 28 1997 15:23 | 19 |
| .0
Your RZ29B's are -VW's (if I correctly understood), mounted in a BA356.
I assume THIS works correctly!
If this stopped working correctly, AFTER installing the RZ26-VA AND you
can see de RZ26, THEN you can be pretty sure your RZ26-VA has a FLEX
inside the SBB, which is NOT wide-compatible. It will ground some of
the bits in the UPPER-byte of the wide drives, what they do not like.
There are revision tables around, stating what rev your RZ26-VA should
have to gave a wide-compatible flex.
Do NOT replace this drive as defective! The customer bought it as
NARROW and with that functionality and MCS will NOT upgrade him to
wide-compatible for free.
Jan Visser
|
| 894.3 | | MSE1::PCOTE | press one now for personal name | Fri May 30 1997 08:28 | 7 |
|
> can see de RZ26, THEN you can be pretty sure your RZ26-VA has a FLEX
> inside the SBB, which is NOT wide-compatible. It will ground some of
What is the purpose of a "FLEX" ? I thought that all RZxx-VA devices
were all wide-compatible (but not wide capable).
|
| 894.4 | | KERNEL::LOANE | Comfortably numb!! | Fri May 30 1997 10:33 | 11 |
| > What is the purpose of a "FLEX" ? I thought that all RZxx-VA devices
> were all wide-compatible (but not wide capable).
The flex connects the 96-pin connector on the back of the SBB to
the power/scsi connectors (or SCA connector) on the bare drive. It
also has the PAL that drives the Fault leds and and passes SCSI ID
to the drive. The issue comes when OLD NARROW drives with OLD 8-Bit
flexes (which obeyed the SCSI standard and grounded unused signal
pins) are plugged into Wide shelves (where they ground the upper 8
data bits & parity. There's a matrix which defines what rev flexes
are wide-friendly....Bill Bassett probably remembers it!!
|
| 894.5 | thanks Chris | MSE1::PCOTE | press one now for personal name | Fri May 30 1997 15:08 | 0 |
| 894.6 | Time to get rid of them anyway. | SIOG::J_LONG | | Fri May 30 1997 15:14 | 7 |
| Bad news fast is better than no news slowly, thanks for the
clarification.
Regards
John Long
|