Reliability and Recovery
236 Avaya Application Solutions IP Telephony Deployment Guide
S8700/MCC1 and S8700/SCC1 Multi-Connect hardware availability
Table 47: S8700 Multi-Connect hardware availability in three reliability configurations
lists the
Multi-Connect hardware that is available in the three reliability configurations.
Note:
Note:
This availability does not include availability of the customer’s data networks,
PSTN contributions, or contributions due to power outages. A conservative
MTTR of 4 hours is assumed, which includes travel and repair time.
Table 47: S8700 Multi-Connect hardware availability in three reliability configurations
1
1. September 30, 2002 data.
Standard (duplex) reliability
High reliability
Critical reliability
Sub-system
Failure
s/
year
MTBO
(years)
Availability
2
(%)
2. The lower number is the equivalent availability for MTTR of 2 hours, which is attainable with technicians and spares on
site. See also
Reliability and availability
.
Failures
/
year
MTBO
(years
)
Availability
2
(%)
Failures/
year
MTBO
(years)
Availability
2
(%)
S8700
Server
complex
3
3. For high and critical reliability, the S8700 server complex has duplicated servers, dedicated Ethernet switches, and UPSs.
The duplex reliability configuration consists of duplicated servers and a UPS for each, with a single, dedicated Ethernet
switch.
0.1095
9.1
99.995 /
99.998
<0.0109
5
>91.3
>99.9995
<0.01095
>91.3
>99.9995
SCC1 or
MCC1
Media
Gateways
4
4. Standard reliability assumes a single IPSI per PN or shared IPSI across multiple PNs. High reliability assumes duplicated
IPSI per carrier in each PN. Critical reliability assumes duplicated IPSI per carrier and duplicated ATM interfaces per
carrier in each PN.
0.153
6.5
99.993 /
99.997
0.0657
15.2
>99.997
5
/
99.999
5. Duplicated IPSIs help with two situations. First, a pair eliminates single point of failure for this module itself. More
significantly, a pair allows dual paths through a duplicated data network.
<0.01095
>91.3
>99.9995
CSS Intf
0.1095
9.1
99.995 /
99.998
0.0876
11.2
>99.996 /
99.998
<0.01095
>91.3
>99.9995
Summary of Contents for Application Solutions
Page 1: ...Avaya Application Solutions IP Telephony Deployment Guide 555 245 600 Issue 3 4 1 June 2005 ...
Page 20: ...About This Book 20 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 21: ...Issue 3 4 1 June 2005 21 Section 1 Avaya Application Solutions product guide ...
Page 22: ...22 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 106: ...Call processing 106 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 124: ...Avaya LAN switching products 124 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 139: ...Issue 3 4 1 June 2005 139 Section 2 Deploying IP Telephony ...
Page 140: ...140 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 186: ...Traffic engineering 186 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 204: ...Security 204 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 228: ...Avaya Integrated Management 228 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 274: ...Reliability and Recovery 274 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 275: ...Issue 3 4 1 June 2005 275 Section 3 Getting the IP network ready for telephony ...
Page 276: ...276 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 356: ...Network recovery 356 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 366: ...Network assessment offer 366 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 367: ...Issue 3 4 1 June 2005 367 Appendixes ...
Page 368: ...Appendixes 368 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 394: ...Access list 394 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 414: ...DHCP TFTP 414 Avaya Application Solutions IP Telephony Deployment Guide ...