Manualshelf

Communicator e3000 MPE/iX Release 6.0 Express 1 (C.60.01) (30216-90286)

ManualsBrandsHP ManualsSoftwareMPE/iX 6.0 Operating System
51525354555657585960
Chapter 3 59
Technical Articles
HP 3000 997 Large Memory Subsystem
HP 3000 997 Large Memory Subsystem
by Dave Snow
Commercial Systems Division
With MPE/iX Release 6.0 Express 1, a Large Memory Subsystem is supported on HP 3000
997 Servers (HP 3000 996/995/992/991/990). Servers must first be upgraded to HP 3000
997 Servers to use the Large Memory Subsystem.
The new Large Memory Subsystem consists of a memory carrier card (A3839A, containing
no memory) and 1 GB memory modules (A3832A). With MPE/iX Release 6.0 Express 1,
four memory modules containing a total of 4 GB (only 3.75 GB is usable at this time) can
be loaded on to the memory carrier card.
With MPE/iX Release 6.5 expected to ship in the first quarter of 2000, eight memory
modules will be supported per memory carrier card and at least two memory carrier cards
will be supported per system providing support for at least 16 GB of memory in HP 3000
997 Servers.
All memory array cards supported on the HP 3000 997 Server (128 MB, 256 MB, 512 MB
and 768 MB) may be intermixed with the Large Memory Subsystem. However, when HP
3000 997 Servers are integrated in the factory, only the 256 MB array card will be factory
integrated with the Large Memory Subsystem. When ordered with the Large Memory
Subsystem, other memory array cards will be field integrated.
HP 3000 997 Servers using the HP 3000 Large Memory Subsystem require the 997 Server
to have processor dependent code (PDC) version 6.05 (J605) or later.
There are several advantages to using the Large Memory Subsystem over previous
memory array cards.
• The Large Memory Subsystem can increase HP 3000 997 Server performance by as
much as 6% when using eight processors and a large amount of memory.
• The Large Memory Subsystem is cheaper on a per megabyte basis than any other HP
3000 997 memory array card.
• With MPE/iX Release 6.5 shipping in the first quarter of 2000, the Large Memory
subsystem will allow support of at least 16 GB of memory in HP 3000 997 Servers.
• The Large Memory Subsystem uses one PMB slot thus freeing up PMB slots. These
slots can be used for adding more HP 3000 997 processors (maximum of 8 with this
release but increasing to twelve in the first quarter of 2000) or for adding more HSC I/O
bus converters (maximum of 6 with this release).