[net.micro.mac] The new Hard disc

ix21@sdcc6.UUCP (David Whiteman) (09/24/85)

Well tonight I finally saw it, the 20 meg Apple hard disk, as well as the
new imagewriter.   First let me say the disk and the imagewriter were
displayed for us; we were not allowed to play with them,  nor make timing
tests.  The hard disk is about the size of three MacBottoms stacked one on
top of the other.  It plugs into the external drive port of the Macintosh and
has another port for another drive, either another Apple hard disk or an
external floppy drive.  At most only two hard drives followed by a floppy
can be connected.  Also currently the hard drive cannot be booted without a
floppy in the internal drive.  In terms of performance it is certainly the
most quiet of any of the disk drives I have heard.  In terms of speed it is 
slower that the Hyperdrive, and slower than the MacBottom, but faster
than any of the other hard drives.  We were only shown how fast it takes
for the drive to startup the switcher and some applications; we were not
shown how long it takes to restart up the Finder after quitting a program a
procedure which often slows down the other hard discs.  



 Also new is the filing system in which folders are used to a greater
extent as directories and subdirectories.  The new drive is not
partitionable into separate volumes, but the role of folders is expanded
into a form more like directories.  File names now need only be unique
within a folder and not unique within a volume.  Folders are no longer
simply creations of the Finder which only exist within the Desktop.  If you
are in an application and activate open in the menu you are presented with
a list of files to choose from which are in the active folder.  Another
window lists all the  folders within the active folder if your file is not in
the current folder, and there is an icon to click the to access the folder or
disk which holds the active folder.  The Apple representative stated that
neither the number of files, nor the number of folders, nor degree of
nesting changes the speed in accessing the drive; thus Apple claims that
large number of files does not slow the system down which is a problem
many of the other drives have.

The new system is called the Turbo File System which is a RAM based
operating system and is accompanied with Finder version 4.26.  The
demonstration of the new filing system was very impressive.  I asked a
question about backing up the hard disc, and was only told that the second
port on the drive was configured so that a 3rd party company can market a
tape drive for backup.  Also future plans include a server program to allow
the drive to be shared on Appletalk.  Other incidental trivia which was
mentioned: The drive does not have an automatic print spooler.  It has a
separate on/off switch.  It automatically parks the disk heads when
powered off, and can withstand 20 g's while operating and 60 g's when off. 
Also there is no problem stacking two of them underneath the Mac.



The Imagewriter II was also demonstrated.  First the bad news: its case is
the same ghastly bright white as the Apple IIc, so it does not match the
Macintosh's beige (that was my mom's only comment during the whole
evening).  It also has a new eight pin circular socket which is unlike either 
the RS232 or RS422 port, meaning you also need to obtain an interface
cord which is only available from Apple.   The good news is that it is much
faster than the old imagewriter.  I don't remember the stats,  but
apparently the new printer is faster in standard print mode than the old
printer is in draft mode.  Also the printer has far greater resolution than
the old printer.  Furthermore the printer has room for cards.  One card is
planned for the printer so that the printer can be addressed via Appletalk
and thus be shared by several Macs.  Another card provides a 32K buffer
which would probably be more useful for Apple II users.  Also more
applicable to Apple II users is a speed control which affects the speed of
the printer while in ascii mode; the control has no effect while printing in
the Mac's graphic mode.  The new optional sheet feeder is the best sheet
feeder I have ever seen.  It did not jam  once during the evening and is
easily removable to convert to traction feed and back also feeding sheets
individually without the feeder is a lot easier than feeding sheets into the
old printer.   The printer supports a new 4 color ribbon; although software
to use colors is only available now for the Apple II;   the old
monochromatic imagewriter ribbons also can be used.  The new printer is
also a bit larger than the old one.  Current plans are to discontinue the old
Imagewriter and market the new one at the same price as the old one.  The
Imagewriter 15 will not be discontinued, and the new printer driver
supports all three printers.  I forgot the announced prices, but these were
posted in a preceding article in this newsgroup.

 

Also demonstrated was the new modem which is the size of a pack of
cigarettes.  Not much else to say about it; it is designed to be out of the
way by staying on the wall where it is plugged instead of taking up desk
space.  It also has the new eight prong socket and is the same color as the
new printer.



One more item Switcher 5.0 will be marketed at $19.95.  The
understanding the spokesman had was that Switcher  is not public domain;
people can either but it for $19.95 and get the manual, or join CompuServe
and obtain copy.  Non CompuServe subscribers are not entitled to a copy. 
Version 5.0 will also be placed on CompuServe.



The standard disclaimers apply: some of the names mentioned are
registered trademarks, I do not work for Apple Computers and neither does my mother.

-- 
----
David Whiteman,
University of California, San Diego