a-class specifications
  A400-100-110 A500-100-140 / A500-200-1401
Product numbers A6398B A6399B
Microprocessor supported PA-8500 @ 110 MHz PA-8500 @ 140 MHz
Number of processors 1 CPU 1 to 21 CPUs
Operating system support MPE/iX Release 7.0 MPE/iX Release 7.01
Relative performance 2.2 3.2 / 5.41
Memory (min./max.) 128MB / 2GB 512MB / 8GB2
On-chip cache (data/instr)/CPU 1 MB/512 KB 1 MB/512 KB
I/O slots 2 4
I/O devices    
Internal disk drives 2 2
Internal disk capacity max. 72 GB 72 GB
External storage capacity
maximum using disk arrays
37 TB3 37 TB3
Tape drives max. 32 32
System printers max. 8 8
Serial printers max. 250 250
Connected workstations max. 3300 3300
Standard I/O features Ultra2 LVD SCSI port, SE SCSI port, 10/100Base-TX LAN, 3x RS-232 ports for console and UPS connections, optional integrated Web Console
Supported I/O connectivity Ultra2 SE/LVD SCSI (single port); ULTRA HVD SCSI (single port); 10/100Base-TX LAN; 802.5 FDDI via a switch; X.25 via a DTC; SNA and NS pt.-to-pt. via 8 channel ACC card
1 Multiprocessor support requires MPE/iX Release 7.0 Express 1.
2 Maximum memory size is limited to 2 GB with Release 7.0. Release 7.0 Express 1 will support maximum memory sizes of 8 GB.
3 Maximum external disk capacity is limited to 12 TB with Release 7.0. Release 7.0 Express 1 will support maximum disk capacities of 37 TB.