NEC PathManager

Chapter 1 Overview of NEC Storage PathManager

.3.3 C

Cluster configuration

1.3

Below is an example of a cluster system configuration. There are FC switches between the server and

NEC Storage so that multiple servers will make the same logical unit visible.

NEC Storage

ress5800

StoragePathSavior

ress5800

StoragePathSavior

Storage PathManager Storage PathManager

Figure 1-4 Cluster configuration

I-6

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