[comp.sys.next] Hard Disks and Optical Disks

kph@blackhole.bae.bellcore.com (Keith P. Hawkins) (06/21/91)

I have an 040 Cube running 2.0 with just the swapdisk and the optical drive.  

I am now running out of free space on my optical.  I am thinking about getting a harddisk for
the machine.  I am tempted to buy the 330 Mb advertised in BusinessLands last fire sale, but 330MB doesn't sound like a lot of space if ~200 MB is needed just
to hold the system software.


I suppose that I could buy a single additional optical disk to use as a backup
to the one I currently have and keep just data on the harddisk.  Is this feasible?  Or does one want to run the system off of the disk as well for performance
reasons and the 330Mb just too small?

Basically what I'm asking is what would all you knowledgeable people out there
do if you were in my shoes?  (Size 10 1/2  :-)


Please respond with any suggestions you may have.


Thanks,
Keith

sanders-malcolm@CS.YALE.EDU (Malcolm Sanders) (06/21/91)

In article <1991Jun20.181149.17058@bellcore.bellcore.com> kph@blackhole.bae.bellcore.com (Keith P. Hawkins) writes:



   I have an 040 Cube running 2.0 with just the swapdisk and the 
   optical drive. I am now running out of free space on my optical. 
   I am thinking about getting a harddisk for the machine.  I am tempted 
   to buy the 330 Mb advertised in BusinessLands last fire sale, but 330MB 
   doesn't sound like a lot of space if ~200 MB is needed just
   to hold the system software.

   I suppose that I could buy a single additional optical disk to use as a 
   backup to the one I currently have and keep just data on the harddisk.  
   Is this feasible?  Or does one want to run the system off of the disk 
   as well for performance reasons and the 330Mb just too small?

   [....]  

   Please respond with any suggestions you may have.


   Thanks,
   Keith


My understanding is that the 330 Mb disk drive is the largest that
can coexist with the optical disk inside the cube.  If you want a 
larger hard disk, you will have to hang it (or the optical disk 
drive) off the SCSI port.

I would tend to have the stuff that is used most often on the hard
disk, since it has a faster seek time than the optical disk, but 
I'm really a novice at this stuff, so a grain of salt is advised.

Malcolm Sanders
Applied Physics
Yale University

nathan@jacobi.biology.yale.edu (Nathan F. Janette) (06/22/91)

In article <1991Jun21.170759.27997@cs.yale.edu> sanders-malcolm@CS.YALE.EDU  
(Malcolm Sanders) writes:
> In article <1991Jun20.181149.17058@bellcore.bellcore.com>  
kph@blackhole.bae.bellcore.com (Keith P. Hawkins) writes:
> 
> 
> 
>    I have an 040 Cube running 2.0 with just the swapdisk and the 
>    optical drive. I am now running out of free space on my optical. 
>    I am thinking about getting a harddisk for the machine.  I am tempted 
>    to buy the 330 Mb advertised in BusinessLands last fire sale, but 330MB 
>    doesn't sound like a lot of space if ~200 MB is needed just
>    to hold the system software.

> 
> My understanding is that the 330 Mb disk drive is the largest that
> can coexist with the optical disk inside the cube.  If you want a 
> larger hard disk, you will have to hang it (or the optical disk 
> drive) off the SCSI port.
> 

NeXT offers the 400Mb half-height disk as the replacement for the 330Mb
half-height units that used to come with older cubes.  Either way, there
is one full-height of space left in cubes with the OD drive.  So, as long
as you pull the 40Mb swapdisk, you could install a 660Mb full-height disk.

-- 
Nathan Janette
nathan@jacobi.biology.yale.edu

jchin@wimsey.bc.ca (Joseph Chin) (06/22/91)

In article <1991Jun21.170759.27997@cs.yale.edu> sanders-malcolm@CS.YALE.EDU (Malcolm Sanders) writes:
>
>My understanding is that the 330 Mb disk drive is the largest that
>can coexist with the optical disk inside the cube.  If you want a 
>larger hard disk, you will have to hang it (or the optical disk 
>drive) off the SCSI port.

Sorry Malcolm ... you're wrong there! The harddrive capacity has 
absolutely no bearing on the type of harddrive you can put in an
OD cube. There is room in an OD cube for a full-height 5.25"
harddrive of ANY CAPACITY. I think Micropolis has just announced
a 2GB 5.25" full-height hard drive.

:-) Joe

-- 
Joseph Chin                         Wordcraft Systems Corporation
jchin@van-bc.wimsey.bc.ca           201-434 West 12th Avenue
(604)879-9687 (voice & NeXTfax)     Vancouver, B.C., Canada  V5Y 1V3
********************* NeXT Registered Developer ********************

cdl@chiton.ucsd.edu (Carl Lowenstein) (06/23/91)

In article <1991Jun21.170759.27997@cs.yale.edu> sanders-malcolm@CS.YALE.EDU (Malcolm Sanders) writes:
>In article <1991Jun20.181149.17058@bellcore.bellcore.com> kph@blackhole.bae.bellcore.com (Keith P. Hawkins) writes:
>
>   I have an 040 Cube running 2.0 with just the swapdisk and the 
>   optical drive. I am now running out of free space on my optical. 
>   I am thinking about getting a harddisk for the machine.  
>
>My understanding is that the 330 Mb disk drive is the largest that
>can coexist with the optical disk inside the cube.  

At least one misunderstanding here -- no valid reason (except possibly
power consumption) why you can't put a *big* disk drive in a cube along
with the OD.  I have a 660MB MaxTor in mine.  When the NeXT 030 cubes
came with hard disks they were sold with nothing over 330MB because of
economics, but the price of disk drives keeps going down.

> If you want a 
>larger hard disk, you will have to hang it (or the optical disk 
>drive) off the SCSI port.

Another misunderstanding here -- the NeXT internal OD is *not* SCSI.  It
has its own controller and internal bus.

>I would tend to have the stuff that is used most often on the hard
>disk, since it has a faster seek time than the optical disk.

Good idea here.  Use the OD as archival storage, and bring things from it
to use as needed.

-- 
        carl lowenstein         marine physical lab     u.c. san diego
        {decvax|ucbvax} !ucsd!mpl!cdl                 cdl@mpl.ucsd.edu
                                                  clowenstein@ucsd.edu

cyliao@eng.umd.edu (Chun-Yao Liao) (06/24/91)

In article <1991Jun21.170759.27997@cs.yale.edu> sanders-malcolm@CS.YALE.EDU (Malcolm Sanders) writes:
>
>My understanding is that the 330 Mb disk drive is the largest that
>can coexist with the optical disk inside the cube.  If you want a 
>larger hard disk, you will have to hang it (or the optical disk 
>drive) off the SCSI port.

	Not true, there are people with 1.2G HD IN their cube with OD drive.
	The NeXTcube's driver bay can accomodate 2 FH devices, or 2HH+1FH,
	or 4HH devices. Don't forget that NeXT shippes cube with 660 meg
	Maxtor HD in cube with OD.




--
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