ARCHITECTURE STUDY

I REVIEWED ARCHITECTURE DOCUMENTATION

II INTERVIEWED: • MANAGEMENT PERSONNEL• DATA PROCESSING PERSONNEL• SYARIKAT TELEKOMS MALAYSIA (SM) PERSONNEL• IBM PERSONNEL

III ANALYSED FINDINGS & REVIEWED WITH DATA PROCESSING PERSONNEL

IV PRODUCED MANAGEMENT PRESENTATION V PREPARED AND SUBMITTED WRITTEN REPORT

C&L ARCHITECTURE EXPERIENCES

* FEW BANKS USING HOT BACKUP OF MAINFRAMES

* CONTINUOUS RUNNING SYSTEMS WIDELY USED FOR HIGH RELIABILITY APPLICATIONS

* TYPICAL U.S.A. BANK SERVICE LEVELS — INTERRUPTIONS- 98% AVAILABILITY (1% PROCESSING, 1% TELECOMMUNICATION)

- INTERRUPTION MANAGEMENT OBJECTIVE < 30 MIN. PER EVENT - RELIABILITY MANAGEMENT

- SYSTEMS TESTING OF RELEASES (SYSTEMS & APPLICATIONS SOFTWARE)

- FREQUENCY < 1 PER WEEK

•TYPICAL SERVICE LEVELS — DISASTERS - ONLINE CRITICAL PROCESSING

- 1 DAY RECOVERY- OTHER PROCESSING

- 1 WEEK DELAY FOR MOST APPLICATIONS (UNTIL COLD SITE POPULATED)

SERVICE LEVEL REQUIREMENTS * EXECUTIVE DIRECTOR

- EXCELLENT RESPONSE TIME EXCEPT AT 1 OR 2 PEAK/PEAK PERIODS PER YEAR

* GENERAL MANAGER, TREASURY - 99% AVAILABILITY BUT WILL SETTLE FOR 98% IF OUTAGES ARE

CONSISTENT AND OF SHORT DURATION - EXCELLENT RESPONSE TINE EXCEPT AT AM UNUSUAL PEAK/PEAK

PERIOD

* MANAGER, METHODS & SYSTEMS- INTERRUPTION DURATIONS < 1 HOUR (99% AVAILABILITY )- NUMBER OF INTERRUPTIONS PER MONTH ≤ 2 (99% AVAILABILITY )- EXCELLENT RESPONSE TIME DURING MONTHLY PEAKS

* INTERNAL AUDIT - ATM INTERRUPTION DIJRATION 2 HOURS (DURING BANKING HOURS)

SERVICE LEVEL CONPUTAT1ONS (10 HRS/DAY: 25 DAYS PER MONTH OF BRANCH OPERATION S) 98% = 5 HRS DOWN PER BRANCH PER MONTH

(½ DAY PER MONTH) 99½% = 1 HR DOWN PER BRANCH PER MONTH

APPLICATION PROCESSING REQUIREMENTS

* EXECUTIVE DIRECTOR — MANAGEMENT INFORMATION SYSTEM — CUSTOMER INFORMATION SYTEM — EFT SHARING A FEW YEARS AWAY

* GENERAL MANAGER, ADMINISTRATION — EXECUTIVE INFORMATION SYSTEM (OPERATIONS & FINANCIAL) — CUSTOMER INFORMATION SYSTEM

* GENERAL MANAGER, TREASURY — OWNERSHIP RESPONSIBILITY ASSUMED BY SPECIFIC USERS

(NEEDED FOR APPLICATION PROCESSING SERVICE LEVEL AGREEMENTS AND RELEASE MANAGEMENT APPROACH)

* EDP AUDIT — TIGHT CONTROL OF DIAL IN CAPABILITIES

* DOMESTIC BANKING — CUSTOMER INFORMATION SYSTEM — LOAN ORIGINATION AND PROCESSING SYSTEM

* OTHER POSSIBLE SYSTEMS TO BE IDENTIFIED IN IS PLAN — PROPERTY/BUILDING ASSET REGISTER/MANAGEMENT SYSTEM — STORES INVENTORY SYSTEM — ETC.

OTHER FINDINGS

* EXECUTIVE DIRECTOR — MAJOR EFT, POS, AND HOME BANKING NOT EXPECTED FOR SEVERAL YEARS

* EDP AUDIT- STAFF SHOULD BE DEDICATED) TO A CENTRE

(ACCESS TO ONE SITE DOES NOT AUTHORISE ACCESS TO OTHERS)

- OFFSITE STORAGE ON ALTERNATE SITE IS ACCEPTABLE

* IBM — HIGH AVAILABILITY PROGRAM REQUIRES:

INTEGRATED RELIABILITY MANAGEMENT PROGRAM (HARDWARE, FACILITIES, SYSTEMS SOFTWARE, APPLICATIONS SOFTWARE AND TELECOMMUNICATIONS)

— INTERRUPTION MANAGEMENT PROGRAM (TRAINING AND PROCEDURES FOR RAPID RESTART)

TAR C H

IT Configuration Evolution Overview

ImplementInitialDual CenterConfiguration

ServiceLevel98%

MoveProductionto Court Hill

TAR C H

ServiceLevel98%

AdequateService

Level

YES

NO

TAR C H

ServiceLevel99.5%

-A d d H o tB a cku p

-U p g ra d eF ro n t

E n d

-C o n tra ctfo r

H o t/C o ldS ite

In itia l D ua l Center C onfiguration

Fron t E ndFron t E ndFron t E nd

TAR Court Hill

FE P FE P

LogLog

O n-L ineP roduction

B atchandIn fo

C ente r

7 M IP S7 M IP S1 4 M IP S

Service Level 98%

Log D a ta

B a cku pF ile s

B ackupS ystem

andD eve lopm en t

YesterdaysData

D ual C enter-C o ld B ackup C onfiguration

Fron t E ndFron t E nd Fron t E nd

TAR Court Hill

FE P FE P

LogLog

O n-L ineP roduction

D eve lopm en tB a tchandIn fo

C ente r

1 4 M IP S1 4 M IP S 1 4 M IP S

Service Level 98%

S paceFor

A dd itiona lS ystem

Log D a ta

B a cku pF ile s

YesterdaysData

D ual C enter-H ot B ackup C onfigura tion

Fro n t E n d Fro n t E n dFro n t E n d Fro n t E n d

TAR Court Hill

FE P FE P

Lo gLo g

O n -L ineP ro du ction

O n -L ineP ro du ction

H o tB acku p

D e ve lop m en tB a tchan dIn fo

C e n te r

1 4 M IP S 1 4 M IP S1 4 M IP S 1 4 M IP S

Service Level 99.5%

TELECOMMUNICATION FINDINGS

* DISSATISFACTION WITH TELECOMMUNICATION FAULTS CAN BE DUE TO SEVERAL CAUSES:

- LOCAL LINES - POWER SUPPLY - MODENS/MULTIPLEXORS - WEATHER-TRUNK ROUTE - HUMAN ERROR

* MICROWAVE TRUNK ROUTES RELIABILITY 99.97% — 99.99%

* COST OF TELECOMMUNICATIONS SIGNIFICANT DATA - APPROXIMATELY $300,000 PER ANNUM VOICE - AT LEAST DOUBLE DATA COMMUNICATIONS COSTS

* TELEKOMS IS WILLING TO COOPERATE TO SOLVE BRANCH AVAILABILITY PROBLEM

BRANCH DOWNTIME* NUMBER OF BRANCHES <2% 64%

2—5% 19% 5—10% 12%>10% 5%

* 10.00 AM — 3.00 PM, MON. — SAT. (THROUGHOUT 1986)

CENTRAL SITE COMPUTER DOWNTIME OVER PERIOD AVERAGED 2%

OTHER ISSUES

IBM CAPACITY PLANNING (SHARE GUIDELINES)• ADD MEMORY TO KEEP PAGING RATE BELOW 35

• PATH& ACTUATOR REQUIEMENTS (3380 SERIES DASD)D

AS

D P

ath

s

Ac

tua

tors

(4

pe

r u

nit

)U tiliza tion during Peak H our

3

6

9

12

16 (4 un its)

72 (18 un its )

112 (28 un its)

40 (10 un its )

50%

OTHER ISSUES (CONT’D)

DATA BASE MANAGEMENT SYSTEM (DBMS) IMPLEMENTAION- EFFECTIVE & EFFICIENT DBMS IMPLEMENTATION REQUIRES EXTENSIVE EXPERIENCE AND TIME- CONVERSION OF EXTENSIVE APPLICATION PORTFOLIO NORMALLY IS A FIVE YEAR PROGRAM - FEW DBMS PACKAGES ARE EFFECTIVE FOR BOTH HIGH VOLUME PRODUCTION AND MANAGEMENT INFORMATION USAGE

SUGGESTED APPROACH 1)EVALUATE AND SELECT DBMS USING THE PRIMARY SELECTION CR1TERIA OF:

— ABILITY TO SUPPORT CL, CIS, ETC PACKAGES — FUNCTION AND PERFORMANCE REQUIREMENTS OF MIS AND ONLINE PRODUCTION SYSTEMS

2) SELECT INITIAL APPLICATION (CL, CIS, ETC) AND IMPLEMENT 3) PRODUCE EXTRACT PROGRAMS FOR KEY PRODUCTION FILES 4) CONVERT KEY MANAGEMENT INFORMATION TYPE APPLICATIONS TO DBMS 5) EVALUATE AND CONVERT TV FEASIBLE II1CIIVOLIJME ONLINE APPLICATIONS

(THEIR PROCESSING OFTEN DOUBLES MIP REQUIREMENTS)

OTHER ISSUES (CONT’D)

SUITABILITY OF TAR AS BACKUP SITE ADVANTAGE: EXISTING & OPERATIVE SITE DISADVANTAGES: QUALITY OF PHYSICAL BUILDING & SITE

— TOO SHALL TO HOLD COMPLETE THREE COMPUTER CONFICURATION— HIGH RISK SURROUNDING — OLD, LOW QUALITY FACILITY — SHARED BUILDING IN FUTURE

POTENTIAL FOR DISTURBANCE EFFECTING BOTH SITES

— CLOSE TO COURT HILL DATA CENTRE— SAME KL TRUNK EXCHANGE

POSSIBLE SOLUTIONS 1) CONSTRUCT NEW SITE e.g. AT BANGI (HIGH COST)2) AWAIT A SHARED COMMERCIAL CONTINGENCY SITE (LOW COST)

SUMMARY OF KEY RECOMMENDATIONS

CONTINGENCY PLANIING — PRODUCE CONTINCENCY PLAN BASED ON COLD BACKUP ARCHITECTURE AND COMBINED LEASED AND CIRCUIT SWITCHED NETWORKS DATA PROCESSING ARCHITECTURE— MOVE PRODUCTION DATA CENTRE TO COURT HILL— UPGRADE CURRENTLY OWNED COMPUTERS T0 CAPABILITY REQUIRED TO PROCESS VOLUMES AND APPLICATIONS EXPECTED OVER NEXT SEVERAL YEARS

TELECOMMUNICATIONS ARCHITECTURE— TERMINATE LEASED LINES AT BOTH COURT HILL AND TAR— IMPROVE QUALITY OF SERVTCE TO BRANCHES CURRENTLY EXPERIENCING BELOW PAR SERVICE LEVELS (JOINT PROPERTY, DATA PROCESSING, TELEKOMS, AND C&L PROJECT)— INITIATE PILOT USAGE OF CIRCUIT SWITCHED NETWORK