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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

6655.0. "9.1Gb drive support on PCI SWXCR" by MEOC02::VIETH () Mon May 05 1997 19:56

Can anyone assist my customer with his new purchase?

I installed for my customer 5 x FR-CFCBA-CA 9.1gb drives into their PCI SWXCR 
and tried to configure them as a raid 5 set but the SWXCRMGR would only allow 
me to configure a maximum of 4 drives? This is on a Prioris HX 590.  Are these 
drives supported only with certain version of firmware and/or SWXCRMGR 
software? 

Roy MCS Geelong 
Australia


T.RTitleUserPersonal
Name
DateLines
6655.1only (4) 9G drives supportedSUBSYS::WOJDAKTue May 06 1997 11:409
    The MYLEX controllers can only support a maximum of 32Gig Logical
    drive size.This means that the maximum number of 9Gig drives that
    can be used in RAID 5 and RAID 0+1 configs is 4.The overhead for the
    RAID brings the LOGICAL size under 32Gig.
    
    A new RAID LOGICAL drive needs to be created if you have more
    drives.
    
                     Rich
6655.2Not from the PCBUSUTRA::dhcp179.dmo.dec.com::BatsSpeeding, speeding, I'm always speedingWed May 07 1997 05:5616
	This is for Firmware 2.x only I assume?
	The Mylex FR-PCTAR-Ex as shipped/sold by the PCBU with the current
	rev. of firmware v3.xx supports system drives as large as 2 Terabytes.
	The StorageWorks equivalent which as far as I know is still at firmware
	v2.xx (v2.36? or v2.52?) could have this lower limitation.

	So using 9GB FR-CFCBA-CA and FR-PCTAR-Ex gives you the possibility to
	to go 8x9GB=72GB using normal RAID sets or with a Superdrive group to
	16x9GB=144GB in size.
	(The 2 Terabytes is just an arc. limit. You are still limited to 8
	 disks in a RAIDset or 16 in a Superdrive group)

	Pjotrr

	PS: This is obviously Intel/Prioris only.