[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

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

6445.0. "ESA package contents" by TKOVOA::OBARA_J () Wed Mar 05 1997 02:59



 I am confused with ESA configuration. What I cannot understand is as 
follows:

 All the ESA packages have dual AC modules (BA35X-HF) which occupy 
two slots of each BA356 storage shelf. BA356 shelfs have other six
slots. According to a training material, SW8T1-AA/AB have 6 BA356
shelfs and 36 RZ29B disk drives. That means each BA356 shelf has
6 RZ29B disk drives. Which slot should a cache battery for HSZ50 
be mounted onto? I would like to know the quantity of storage and 
controller shelfs included in ESA packages.
 


Thank you in advance.

Jun Obara

T.R	Title	User	Personal Name	Date	Lines
6445.1	seperate shelf	STOWKS::BULTE	Wilko Bulte - European Storage Engineering	`Wed Mar 05 1997 06:04`	5
	The ESA we have sitting in our engineering lab has a seperate shelf that houses all the ECB SBBs. Wilko
6445.2	Save those slots for disks	WONDER::WILLARD		`Wed Mar 05 1997 11:08`	8
	Those batteries don't need to be plugged into BA356 slots, and so don't need to rob slots. If your taste runs to the tacky, just park the batteries on the floor; as long as the cables run to the HS*50 controllers, the batteries will source and sink power fine. Cheers, Bob
6445.3	Thank you	TKOVOA::OBARA_J		`Thu Mar 06 1997 19:10`	32
	Thank you for the reply. I guess that the standard packages have storage and controller shelfs as follows: Package No. of No. of No. of No. of Cache Cabinet Storarage Shelf Controller Shelf Battery Shelf Model C SW8T1 1 6 1 1 SW8T2 1 18 3 1 SW8T3 2 36 6 1 SW8T4 4 72 12 2 SW8T5 8 144 24 4 SW8T6 22 396 66 11 Model L SW8D1 1 6 3 1 SW8D2 1 14 7 2 * SW8D3 2 28 14 3 * SW8D4 3 42 21 4 * Model M SW8M1 1 6 2 1 SW8M2 1 15 5 1 SW8M3 3 45 15 3 *: If each cabinet houses 22 shelfs, these packages have one more shelf than they can incorporate. Jun Obara
6445.4		HOUNDD::BASSETT	Bill	`Fri Mar 07 1997 18:00`	8
	Jun-san, I believe the ESA packages use the SW800 as the cabinet. The SW800 has 23 available shelf locations (the 24th is occupied by the fan tray) - 10 horizontal and 2 vertical in the front, 9 horizontal and 2 vertical in the rear. So it looks like there are just enough locations! Bill
6445.5	Thank you	TKOVOA::OBARA_J		`Sun Mar 09 1997 18:37`	9
	Bill-san, Thank you for the suggestion. It removed my concern about ESA configuration. Jun