On Thu, 23 May 1996, Douglas J. Rener wrote:
 
> Hello,
>      My company is currently at the 3.0 operating system (HP3000). We
> want to upgrade to at least 4.5 so we can access our Image data using
> ImageSQL.
 
 If I recall correctly you can't go straight from 3.0 to 5.0, you need to
do a 4.x upgrade in between.
 
 
>      I am looking for any advice or experiences people have had doing
> the system upgrade.
>      How long did it actually take? Can it be done in one weekend?
 
 That depends on a number of things.  How large is your system in terms
of CPU and disk?  What is your current LDEV 1 device?  I believe 4.0 FOS
goes over the 500 Mb limit in terms of what must go on LDEV 1.
 
 When I did the 3.0 to 4.0 upgrade it was on a 960 with ~ 12 gig of disk,
all of that being FL drives.  That took 36 hours.
 
 The 4.0 to 5.0 upgrade was done on a 987 with ~ 22 gig of disk, mixed
SCSI, SCSI-2 and FL.  That took about 28 hours.
 
 Those time estimates do not include the time I took doing two full
backups of the system and cutting two CSLT's.
 
Jim