HSG80 ACS Solution Software Version 8.7 for Compaq OpenVMS Installation and Configuration Guide

Contents
ixHSG80 ACS Solution Software Version 8.7 for Compaq OpenVMS Installation and
Configuration Guide
Figures
1 General configuration flowchart (panel 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
2 General configuration flowchart (panel 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
3 Configuring storage with SWCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx
1–1 Location of controllers and cache modules in a Model 2200 enclosure. . . . . . 1–2
1–2 Location of controllers and cache modules in a BA370 enclosure. . . . . . . . . . 1–3
1–3 “This controller” and “other controller” for the Model 2200 enclosure. . . . . . 1–4
1–4 “This controller” and “other controller” for the BA370 enclosure. . . . . . . . . . 1–4
1–5 Typical multiple-bus configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6
1–6 Mirrored caching. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–8
1–7 Connections in multiple-bus failover mode . . . . . . . . . . . . . . . . . . . . . . . . . . 1–11
1–8 Limiting host access in multiple-bus failover mode. . . . . . . . . . . . . . . . . . . . 1–17
1–9 Placement of the worldwide name label on the Model 2200 enclosure . . . . . 1–20
1–10 Placement of the worldwide name label on the BA370 enclosure . . . . . . . . . 1–20
2–1 Mapping a unit to physical disk drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4
2–2 PTL naming convention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–5
2–3 How data is laid out on disks in BA370 enclosure configuration. . . . . . . . . . . 2–6
2–4 Storage container types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–14
2–5 3-member RAID 0 stripeset (example 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–18
2–6 3-member RAID 0 stripeset (example 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–19
2–7 Mirrorsets maintain two copies of the same data . . . . . . . . . . . . . . . . . . . . . . 2–21
2–8 Mirrorset example 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–21
2–9 5-member RAIDset using parity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–23
2–10 Striped mirrorset (example 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–25
2–11 Striped mirrorset (example 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–25
2–12 One example of a partitioned single-disk unit . . . . . . . . . . . . . . . . . . . . . . . . 2–26
2–13 Large chunk size increases request rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–31
3–1 Dual-Bus Enterprise Storage RAID Array Storage System . . . . . . . . . . . . . . . 3–4
3–2 Single-Bus Enterprise Storage RAID Array Storage System. . . . . . . . . . . . . . 3–5
4–1 An example of a network connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–4
5–1 Maintenance port connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2
5–2 Single controller cabling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–4
5–3 Controller pair failover cabling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–11
5–4 Storage container types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–18
6–1 Example storage map for the BA370 Enclosure. . . . . . . . . . . . . . . . . . . . . . . . 6–2