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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

797.0. "Will 10 disks in one raid5 set give performance problems ??" by OSL09::NILSTAD () Thu Mar 06 1997 09:24

Hi

Is there any guidelines for how many disk one 
should configure in one raid5 set ??. 
Is 10 disks to many ??
Would one get better performance with 6 disks
one for each scsi bus ??

KMN

T.R Title User Personal
Name Date Lines

797.1 SSDEVO::T_GONZALES Fri Mar 14 1997 11:23 11

T.R	Title	User	Personal Name	Date	Lines
797.1		SSDEVO::T_GONZALES		`Fri Mar 14 1997 11:23`	11
	the spd defines how many devices and storage sets can be configured. currently the max number is raid 5 is 14 devices as of 3.0. Depending upon your i/o requests and sizes, you may or may not get better performance, however if you are using more than one member of a raid set on a single storage device shelf, if you lost that shelf or port for any reason, then you lose more than one member of the raid set and then you are had.

    the spd defines how many devices and storage sets can be configured.
    
    currently the max number is raid 5 is 14 devices as of 3.0. 
    
    Depending upon your i/o requests and sizes, you may or may not get
    better performance, however if you are using more than one member of
    a raid set on a single storage device shelf, if you lost that shelf or
    port for any reason, then you lose more than one member of the raid set
    and then you are had.