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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

6539.0. "650mb platter on RW504?" by BRLLNT::MONTAQUILA (Cover me, I'm changing lanes!) Wed Apr 02 1997 11:38

    Is there any other media supported on the RW504 other than the
    RWX1K? Can they use a 650mb platter?
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6539.1Look carefully....SUBSYS::alcor.shr.dec.com::smithApps EngineerWed Apr 02 1997 14:287
If it really is an RW504 then no, only 1X media (650MB) is supported. 
If what they have is really an RW524 (Jukebox SCSI ID String will 
still say "RW504", so check the DRIVE SCSI ID String) which has an 
RWZ52 instead of the 1X RWZ01, then it is really an RW524, in which 
case it can handle 2X MO-media )1.2GB...

Joe
6539.2LEFTY::CWILLIAMSCD or not CD, that's the questionThu Apr 03 1997 09:225
    What's the real question here? Is it 600 MB vs 650 MB media? Or 600 MB
    vs 1.2 MB media?
    
    c
    
6539.3595 vs 650BRLLNT::MONTAQUILACover me, I'm changing lanes!Fri Apr 04 1997 07:492
    The real question is 595 vx 650.  The RWZ1X-01 is 595mb. It looks like 
    we don't sell 650mb platters (unless you know of one).
6539.4LEFTY::CWILLIAMSCD or not CD, that's the questionFri Apr 04 1997 08:1713
    The difference between 600 MB (595, to split hairs), and 650 MB media
    is sector size. The 595 MB media uses a 512 byte sector size, and the
    650 uses a 1024 byte sector size.
    
    The drive in the RW504 can handle either. The real question then is the
    SW driving the drive and the Jukebox.
    
    On OpenVMS, only the 512 byte sector size media is supported by OSMS, the
    control SW. On Digital Unix, I don't know the current sector size
    support status. Ask in MSGAXP::OPTICAL.
    
    Chris