NEC PathManager

Chapter 1 Overview of NEC Storage PathManager

NEC Stora

Express5800

Storage PathManager

Figure 1-2 Single-server configuration

.3.2 M

Multiple-server configuration

1.3

-s

In this system, multiple servers are directly connected to NEC Storage. This system configuration is used

when multiple servers having different tasks share a relatively large NEC Storage. Exclusive control such as

access control is necessary among logical units used by respective servers.

ress5800

StoragePathSavior

ress5800

NEC Storage

Storage PathManager Storage PathManager

Figure 1-3 Multiple-server configuration

I-5

Contents

Main Page Preface iii Page Contents i Page Page Chapter 1 Overview of NEC Storage PathManager Page Page Page Page Page Chapter 2 Installing NEC Storage PathManager Page Page Page Page Page Chapter 3 Functions of NEC Storage PathManager Page /1 /2/ /3 /4 III-4 Page Page Page Page 254(Enabled) > 1(Enabled) > 254(Disabled) > 1(Disabled) III-9 Priority High Low Figure 3-3 Priority size relationship Figure 3-4 -avail option Page Page Page Chapter 3 Functions of NEC Storage PathManager LUN0 LUN1 Path 0 Path 1 III-13 Figure 3-5 Static load balancing Page 3.4 Cluster liaison 3 3. .4 4 C Cl lu us st te er r l ia ai is so on n Page Page Page Set only Request interval at 90 seconds III-19 Page III-21 Page Page Page spsevent.log spsevent.log III-25 Log storage folder spsevent.log.old The file name is changed, and... a new one is created. Figure 3-8 Storing SPS logs (2) spsevent.log spsevent.log Page Page III-28 Page Chapter 4 Operating NEC Storage PathManager Page IV-4 (2) Failback method (3) MSCS liaison IV-5 (4) Path patrol Page IV-7 Chapter 4 Operating NEC Storage PathManager Ex NEC Storage p IV-8 4.2 Handling abnormalities 4 4. s es ie (2) Disk drive information (3) Logical drive information (4) Event logs IV-10 (5) SPS logs (6) Path information IV-11 (7) Registry Page Page Appendix A spscmd [Name] [Syntax] [Description] Page Page Page Index