IBM 3745 Problem Determination Manual page 190

Host Messages
o
Usage Tier Problems for Models 130, 150, 160, and 170
The following table indicates the
maximum
configurations for each usage tier.
Table
2-1 (Page 1 of 2). Usage Tiers for 3745 Models 130, 150, 160, and 170
3745 Model 130
Tiers LSS/HSS TRA/ELA CA
Tier 1 1 HSS 1 TRA or 1 EtA 2 CAs
Tier 2 2 HSSs 1 TRA
2 CAs
Tier 2.5 2 HSSs
2 TRAs 4 CAs
1 HSS 1 TRA and 1 ELA 4 CAs
2 ELAs 4 CAs
--
Tier 3 1 HSS 2 TRAs and 1 ELA 4 CAS
o
2 TRAs and 2 EtAs 4 CAs
3745 Model 150
Tiers LSS/HSS TRA/ELA CA
Tier 1 1 LSS 1 TRA or 1 EtA
Tier 2 1 LSS and 1 HSS 1 TRA
Tier 2.5 1 LSS 1 TRA and 1 ELA
o
3745 Model 160
Tiers
LSS/HSS TRA/ELA CA
Tier 1
1 LSS or 1 HSS 1 TRA or 1 EtA
Tier 2 2 LSSs 1 TRA or 1 EtA
1 LSS and 1 HSS 1 TRA or 1 EtA
o
2 HSSs 1 TRA
Tier 2.5 2 LSSs and 2 HSSs
2 LSSs 1 TRA and 1 ELA
2 LSSs
2
~LAs
1 LSS and 1 HSS 1 TRA and 1 ELA
Tier 3 2 LSSs 1 TRA and 2 ELAs
2 LSSs and 1 HSS 1 TRA and 1 ELA
2 LSSs and 2 HSSs 1 TRA
o
Chapter 2. Host Messages
2-5