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Conference ssag::ask_ssag

Title:Ask the Storage Architecture Group
Notice:Check out our web page at http://www-starch.shr.dec.com
Moderator:SSAG::TERZAN
Created:Wed Oct 15 1986
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:6756
Total number of notes:25276

4555.0. "BA35X-HC battery backup" by BAHTAT::DODD () Tue Aug 08 1995 15:00

T.RTitleUserPersonal
Name		DateLines
4555.1GENRAL::BASSETTBillFri Aug 11 1995 16:3111
4555.2more info pleaseSLOAN::HOMFri Feb 28 1997 09:3819
> ===========================================================================
> Note 4555.1             BA35X-HC battery backup                      1 of 1
> GENRAL::BASSETT "Bill"                          11 lines  11-AUG-1995 12:31
> ---------------------------------------------------------------------------
>     I believe it's "short term" backup only.  The small size limits how
>     much battery capacity one has.  Don't know about the settings.  Both
>     people in my group who would know (one's the design engineer for it and
>     the other is the supervisor for the power guys) are on vacation today!
>     

Could we get more info on the battery unit? Two questions:
1. what is the amp hour rating on the supply,
2. how can one detect "AC power going down"?  I suspect
   that you have to look at shelf ok.

Hope the two knowledgeable individuals are back from vacation.

Gim
4555.3SSDEVO::BASSETTBillFri Feb 28 1997 20:3312
    Gim,
    
     In your visits here to CXO you've probably met them - Bill Miller and
    Kevin Lonergan.  I've forwarded your reply to them, so you probably
    will get a direct reply.  (I think they are back from that vacation,
    but Bill was out today tending a sick child!)
    
     However, there's been such a low demand for the SBB BBU, it may not
    even be an active part anymore.  Did you ever do an OEM version?  I
    don't remember....
    
    				Bill
4555.4SLOAN::HOMSat Mar 01 1997 16:4910
    The OEM version is the same as the on-base but in a different color.
    
    There's been a renewed interest in a battery unit. It appears that
    flushing the  cache in (future or OEM) controllers may be simpler than
    trying to backup the cache.  Having a "AC Going down" signal would be
    nice.
     
    
    Gim