Memory,Storage and CPU capacity Page13 of 544
Option11C and 11C Mini TechnicalReference Guide
An Option 11C with IP Expansion can be made up of both Option 11C
cabinets and Option 11C Mini chassis. However, when an Option 11C Mini
chassis is used, the NTDK97 Mini Sy stem Controlle r (MSC) card is replaced
with an NTDK20 Small System Controller (SSC) card and an appropriate IP
Expansion daughterboard.
Option 11C and Option 11C Mini software is stored in various areas of the
NTDK20 SSC and NTDK97 MSC cards. In terms of customer data, there are
four possible areas where thes e records can be stored (Refer to Figure 1):
•DRAM — stores and accesses the active version of customer records,
system data and overlay data
•Primary Flash drive c: — contains two copies of customer records
(primary and backup records)
•Backup Flash drive z: — retains the true backup copy of the customer
database
•PCMCIA device a: or b: — if equipped, this 40 Mbyte device can store
a complete backup copy of the customer database