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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

6708.0. "Are they RZ1X drives or DS-RZ1X drives?" by OTOOA::LAVIGNE () Tue May 20 1997 16:31

    Have we changed some partners numbers around the Ultra-SCSI drives.  I
    was led to believe the new drives were going to be DS-RZ1xx-xx when in
    fact they are showing up on AQS as just RZ1xx-xx drives.  Can anyone
        confirm or deny that they are indeed the same drives.
        
        Regards,
        
        JP Lavigne

T.R	Title	User	Personal Name	Date	Lines
6708.1	ahhh,,,, welll,,,	SUBSYS::VIDIOT::PATENAUDE	Ask your boss for ARRAY's...	`Tue May 20 1997 17:55`	35
	Actually the BARE DRIVE is an RZ1xx-xx part number. The drive when placed into a StorageWorks Building block becomes DS-RZ1xx-VA (8 bit), -VW (16 bit) or -VZ (drive has configuration restriction). So they are both right, it just depends if you are talking bare brick or SBB. Now that these pups are starting to ship I will get a blitz out to the field on WTF these new numbers mean. In a nutshell; RZ1wx-yz Where at a BASE drive ONLY; RZ1 = Ultra capable disk drive w = capacity, (A=1GB, B=2GB, C=4GB, D=9GB, etc...) x = scsi interface type (A = 8 bit S/E, B = Wide S/E, C = SCA-2, etc,,) y = where qual on (B,C = Alpha/Vax, G,H = PC Only (for now)) important for cross compatibility. z = what vendor the base drive is based on. Not important. All drives that have the same "wxy" will be compatible regardless of the vendor it was based on. So a 4gb, wide single-ended drive will be a RZ1CB-xx If you want it in an SBB then preceed the number with a DS- and replace the BARE device dependant "yz" for a -VA (narrow) or -VW (wide). DS-RZ1CB-VW It is different at first but once you get the hang of it you can actually figure out what drive you want or have just by the part number. This is just a short lesson on the new numbers. More will be out in the near future... Roger.
6708.2		KERNEL::LOANE	Comfortably numb!!	`Tue May 20 1997 18:22`	2
	Aha.....and there was me thinking that the x in RZ1wx-yz was the rotational speed!!
6708.3	Anybody have a decoder ring?????	SSDEVO::MARTENS	Bert Martens, CXO Storage Solutions	`Wed May 21 1997 11:04`	12
	Well, The x is value range of the drive, so your guess of rotational speed was close Chris. With A offering a lower cost model, and B providing the 7200RPM StorageWorks primary range, and C will be the 10K RPM drives. the connector type is in the suffix -yz with y identifing the connector and z indicating the vendor. Bert
6708.4		HOUNDD::BASSETT	Bill	`Wed May 21 1997 11:05`	10
	re: .1 Roger, Remember that right now we are only shipping the -VW's with the new part numbers. Narrow drives (-VA's) still use the older nomenclature. They use the DS- prefix, but are called DS-RZ40-VA, etc., instead of DS-RZ1DB-VA. I think that the reason is that they are Fast 10, not ultra. Bill
6708.5	Starting with Ultra SCSI use the new name format	SSDEVO::MARTENS	Bert Martens, CXO Storage Solutions	`Wed May 21 1997 14:24`	7
	Correct, The 8bit (-VA) drives are NOT Ultra, but fast10 SCSI, so they retain the old naming convention. Bert
6708.6	boy these guys are great!	SUBSYS::65503::PATENAUDE	Ask your boss for ARRAY's...	`Wed May 21 1997 17:46`	8
	Correct Bill. No plans I know of to ever make a NARROW Ultra SBB. It's kind of a waste. BTW: I bet I could make a bunch of money on the side by fab'ing real SSB decoder rings and selling them on the side. Make a great marketing gag for trade shows ;^)