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Conference turris::microvax

Title:MicroVAX, VAXstation, VAX 4000 Systems
Moderator:QUARK::LIONEL
Created:Fri Jan 03 1986
Last Modified:Fri May 30 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:4370
Total number of notes:18956

4359.0. "DSSI question for VAX 4105A & 4600" by ZPOVC::MUICHOO () Tue Apr 08 1997 04:31

Hi


A customer has a VAX 4000 model 105A with 3 x RF36E internally running 
OpenVMS 6.2.  Two of which is now mounted as a shadow set off one DSSI
bus.  Due to new requirements, he has to order another hard disk of 
similar type to mount it with the 3rd RF36E as another shadow set off
the 2nd DSSI bus.

The problem here is all DSSI hard disks have already phased out.  What
type of hard disk should we propose to this customer in order for him
to mount as a shadow set with the existing RF36E ?

This customer has another pair of spare RF362 hard disk and a R215F 
expander box.  Can these pair of hard disk be mounted in the R215F ?
If so, can each hard disk from the RF362 be mounted as a shadow member
against each RF36E hard disk that is residing in the VAX 4000 model
105A ?

On top of this, the customer is currently using a R400X-B9 with 2 RF73
and 1 x RF74 for another VAX 4000 model 600 running OpenVMS 5.5.  With
this R400X expander box and in Split bus mode :

Can th top tier (four storage cavity) which dedicates to one bus be 
connected to the VAX 4000 model 600 ? whereas the lower tier (three
storage cavity) which dedicates to another bus be connected to the
VAX 4000 model 105A ?  

Can the two buses on the R400X be connected to both VAXes as bus 1 
connection ? ( in this case, all hard disks inside the two VAXes are
connected via bus 0; while all hard disks in the R400X are connected
via bus 1 )

 

Regards,
Mui Choo
T.RTitleUserPersonal
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4359.1DSSI/RF Replaced By DSSI/HSD/SCSIXDELTA::HOFFMANSteve, OpenVMS EngineeringWed Apr 09 1997 12:3217
:The problem here is all DSSI hard disks have already phased out. 

   DSSI storage widgets were phased out several years ago.
   DSSI was replaced by SCSI.  (The RF36 series was retired
   back in mid-1995, the RF74 series in mid-1994.)

:What type of hard disk should we propose to this customer in order for
:him to mount as a shadow set with the existing RF36E ?

   The customer needs another RF36E (used or reconditioned), or
   the customer needs to replace the existing disks with SCSI
   storage widgets and an HSD-series DSSI-SCSI adapter.

   To be shadowed, the disks must share the same disk geometry,
   which usually rules out most cross-disk-model shadowing...

   As for your enclosure-cabling questions, I don't know...
4359.2see the SOCPROXY::J_EVANSWed Apr 09 1997 17:0511
    Mui,
    
    Please look at the current Systems and Options Catalog for VAXes. It
    lists what is supported for the VAX4000-106A and the VAX4000-705A
    (amongst the new stuff). It will show you the new SCSI drives that are
    supported, and naturally we're testing newer ones now.
    
    With the new disks you can get a LOT more storage than just a few years
    ago.
    
    jim