🚀 go-pugleaf

In article <806@PT.CS.CMU.EDU> ralphw@IUS3.IUS.CS.CMU.EDU (Ralph Hyre) writes:
>I'm looking for information (rumors,even) about CD-WORM drives.
>This would presumably be a CD-ROM transport with a higher-power laser for
>burning pits into the disc for data storage.  Similar technology
>already exists for 8" and 12" optical media, why not for compact disc?
>
>A SCSI interface and (Unix) Sun device driver would be nice, but not critical.
>I can imagine paying up to $10,000 for such a device, and having one
>or two per lab, with about 30 $500 CD-ROM drives attached to the
>other workstations for reading the data.
>
>I'd love to be able to put 500M of data on a single disc and send
>it it a standard disk mailer with no special precautions needed.
>It would be especially nice for personal archival storage.
>

Here's some info I have for 5.25" worm drives. All manufacters have 
slightly different formats for their drives and would more than likely 
not be compatable with CD-ROMs.

Hitachi: 
		 
Optical Disk Drive

Specs:	Model OD101-1
		Storage capacity                = 300 MB
		Data transfer rate (burst)      = 690 KB/S
		Average access time (seeks)     = 93ms
		Average access time (latency)   = 17ms
		Disk speed                      = 1800 RPM (CAV)
		Dimension                       = 146x83x213 mm

Formatter Controller

Specs:	Model OF101-1/2
		Interface                       = ANSIX3T9.2 (SCSI)
		Data transfer rate              = 1.5 MB/S
		Drives per OFC                  = Up to 4
		
Disk Cartridge

Specs:	Disk capacity                   = 300MB for OC101-1, 600MB for OC101-2
		Track capacity                  = 16.4 KB/track
		Sector capacity                 = 1,024 B/Sector
		Recording density               = 24,000 BPI
		Track density                   = 16,000 BPI
		Number of data tracks           = 18,624
		Number of track sectors         = 16
		Dimension                       = 135x11x153 mm

Who to call:

Computer Sales & Service Division
No. 950 Elm Ave., Suite 100
San Bruno, Ca., 94066
(415)872-1902


Pioneer:

Optical Disk Subsystem

Specs:	Interface                       = SCSI & Drive I/F
		Number of drives                = 4
		Buffer Capacity                 = 64 KB
		Data capacity/block             = 1024 Bytes/block
		Data transfer speed             = 1 MB/S
		
Optical Disk Drive

Specs:	Loading system                  = Front loading
		Disk speed                      = 1800 RPM (CAV)
		Data transfer speed             = 5.62 MB/S
		Average access time             = 135 MS
		Interface                       = Drive I/F
		
Optical Disk

Specs:	Data Capacity                   = 600 MB (double sided)
		Sectors/track                   = 17
		Bytes/sector                    = 1024

Where to write:

Pioneer Electronics Inc.
5000, Airport Plaza Dr.
P.O. box 22711, Long Beach
Ca., 90801-5711


Maxtor:

Optical Disk Drive

Specs:	Model RXT-800S
		Capacity, formatted              = 2048 byte sectors/per side 
                                           400 MB (CLV)
		Capacity unformatted per side    = 780 MB
		SCSI bus transfer rate           = 1 MB/S
		Average seek time                = 108 MS
		Seek track to track              = 5 MS
		Seek maximum                     = 444 MS
		Average latency                  = 60
		Rotation speed                   = 334-668 RPM
		Recording density                = 30,200 BPI
		Track density                    = 15,900 TPI
		
Who to call:

Maxtor Corporation
150 River Oaks Parkway
San Jose, Ca., 95134
Telex 171074
Fax (408)433-0457


There are more than what I listed but I've got to get some work done.
This should at least get you folks started in the wonderful world of
optical disks.