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Conference ssdevo::hsz40_product

Title:	HSZ40 Product Conference

Moderator:	SSDEVO::EDMONDS

Created:	Mon Apr 11 1994
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	902
Total number of notes:	3319

868.0. "Help for HSZ40 configuration" by DEKVC::NAMJINCHO () Thu May 08 1997 08:05

    Hi,
    
    I need your help for configuring HSZ40 with 100 RZ29 disks.
    My customer, telecomm company, would like to know how many RZ29 disks
    can be connected to one SCSI bus on HSZ40 for optimum performance when
    he uses HSZ-based RAID 0+1 configuration. Following is a brief system 
    configuration.
    
    	System :
    
    	AlphaServer 8200 5/440 * 2 (TruCluster)
    		KZPSA-BB * 3 / AlphaServer 8200
    	StorageWorks 800 * 1
    	        HSZ40-CF * 6 (dual controller)
    		RZ29B-VW * 100
    
    	Application : Customer Care & Billing System for Telecom company
    
    	TP applications for online customer care using Oracle OPS.
    	Batch appliations for billing.
    
    I don't have any I/O related data because it is a initial phase of
    project. So pls gime me a general guideline or recomendation for
    configuring RAID 0+1 with HSZ40s. We are considering 5 or 6 RZ29 disks
    to one SCSI bus for performance. Is it reasonable or not?
    Any help is appreciated.
    
    Best Regards,
    Nam-Jin Cho/Korea Sales

T.R Title User Personal
Name Date Lines

868.1 SSDEVO::T_GONZALES Sun May 11 1997 10:31 19

T.R	Title	User	Personal Name	Date	Lines
868.1		SSDEVO::T_GONZALES		`Sun May 11 1997 10:31`	19
	only 42 individual devices can be connected to any hsz, however if you have a dual controller configuration then only 36 devices can be connected to an hsz, also if you have dual power supplies in the storage device shelves then only 36 devices are possible. current configuration maximums hsz has 6 scsi ports - without dual controllers or dual power supplies you can have 7 devices per port 6 * 7 = 42 with dual controller or dual power supplies, then only 6 devices per port 6 * 6 = 36 devices maximum With 100 devices you will need at least 3 hsz controller shelves and 36 device shelves

    only 42 individual devices can be connected to any hsz, however if
    you have a dual controller configuration then only 36 devices can be
    connected to an hsz, also if you have dual power supplies in the
    storage device shelves then only 36 devices are possible.
    
    current configuration maximums
    
    
    hsz has 6 scsi ports -
    
       without dual controllers or dual power supplies you can have 7
       devices per port 6 * 7 = 42
    
       with dual controller or dual power supplies, then only 6 devices
       per port  6 * 6 = 36 devices maximum
    
    
    With 100 devices you will need at least 3 hsz controller shelves and
    36 device shelves