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Conference ssdevo::hsj40_product

Title:	HSJ30/40 Product Conference

Moderator:	SSDEVO::EDMONDS

Created:	Mon Jul 12 1993
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	1264
Total number of notes:	4958

1236.0. "Can't Quiesce HSJ40, V2.7J-0" by GIDDAY::HOBBS (Andy Hobbs. Sydney CSC. -730 5964) Wed Apr 16 1997 00:51

    
     Hi folks.
    
    I have a pair of HSJ40's which steadfastly refuse to quiesce.
    
     They are running fine and all I need to do at this point is
    to add three disks to shelf 2, but without a quiesce, I'm 
    concerned that I might push RESETs down the bus if I just
    shove them in.
    
     Rebooting the two controllers one at a time hasn't helped.
    
     Advice ?
    
     Thanks.
     Andy/.

T.R	Title	User	Personal Name	Date	Lines
1236.1	No problem just put them in.	SSDEVO::RMCLEAN		`Wed Apr 16 1997 10:47`	10
	1. You really should be running V27J-1. 2. You can just put the disks into the shelf. Don't worry about resets we have fixed this problem since earlier versions of the software and async insertions should be perfectly safe. It may cause the system a few seconds to recover from the bus resets caused by the signals but that is not a fatal error. A lot of the problems with quiesce have been fixed in V3.1 which should arrive soon...
1236.2		GIDDAY::HOBBS	Andy Hobbs. Sydney CSC. -730 5964	`Thu Apr 17 1997 18:26`	10
	What about pulling them out again ? Re: Patch 1. No Writeback Cache installed. Does this patch do more than just change the battery test algorithm ? (I should've put more info in the basenote to avoid confusion - sorry). A/.
1236.3	You didn't tell me you had only a read cache!	SSDEVO::RMCLEAN		`Fri Apr 18 1997 10:14`	5
	Ahh.... You didn't say that you only had read cache! That makes a BIG difference especially when you remove drives. There should be no problems in removing drives without writeback cache since there is no data stored in the cache. Tis true in this case you don't need the patch since that really only applies to cache modules with writeback option or raid 1/5.