A digital Alphaserver 1000 is a really nice server machine, mostyl
because it has 7 slots hot HD drives plus two addition 5,25"
for CD-ROM and Streamer plus one 3,5" floppy disk.
There are two flavours of this model, the Alphaserver 1000 (codename
Mikasa) and the Alphaserevr 1000A (codename Noritake). The later
one is the newer model and supports newer CPUs (EV5) and has more
PCI slots. So if you want to get an Alphaserver 1000, be sure
to get the newer model with the captial "A" after the
The Alphaserver 1000 supports various clock speeds of the 21064
(EV4) architecure ranging from 200 MHz to 266 MHz and the newer
Alphaserver 1000A also supports 21164 (EV5) CPUs ranging from
300 Mhz to 400 MHz . But you will need to install a different
ROM version for EV5 CPUs.
The Alphaserver has a 128bit wide memory bus consisting out of
four banks of memory, each containing four or five standard 72pin
36 bit PS/2 FPM modules with parity, 70ns or better. For EV4 CPUs
you always have to install five memory modules, EV5 CPUs only
need four memory modules per bank - you can simply leave the fifth
slot empty. The maximum installable memory is 1GB.
Both Alphaserver types have a SCSI-controller on board, the Alphaserver
1000 has a Symbios 810 whereas the Alphaserver 1000A has Qlogic
As already mentioned before, the Alphaserver 1000(A) has 7 SCSI
drive slots (which need some special HD carrier) plus room for
2 addition 5,25" half-height devuices (CD-ROM, streamer)
and a 3,5" floppy disk.
The Alphaserver 1000 has 3 32bit PCI slots plus 7 EISA slots.
The Alphaserver 1000 has 7 32bit PCI slots on two busses plus
2 EISA slots.
for my digital Alphaserver 1000A 4/266.