Chapter 3 - Functions; Limit Of Paths And Disks; Load Distribution Function - Overland Storage SnapSAN S3000 User Manual

Chapter 3
This chapter describes PathManager functions. For PathManager, you can make a
configuration file available to associate device files with paths. You can also use the system
log and proc file system to check information and status.
The following sections describe the PathManager configuration file and how to check
information and status.

Limit of Paths and Disks

The following table shows the limit number of paths and logical disks using by
PathManager.
Paths/Disks
Paths / a Disk
Number of Disks
Number of paths
(Detected by the OS)
Size of a Disk
* If the function version of PathManager is earlier than 5.0.0, the number of paths (detected
by the OS) is 512.

Load Distribution Function

PathManager has two types of load distribution, static and dynamic. You can select the load
distribution mode by the configuration file. And you can also set the path priority by the
configuration file. In addition, PathManager automatically distinguishes the model of
Overland and automatically selects the load distribution mode based on the model (*1).
10400424-002 04/2013
(FC / iSCSI/SAS)
32 paths (FC)
8 paths (iSCSI)
2 paths (SAS)
512 disks
1024 paths / 512 paths* 1024 paths / 512
8TB
©2013 Overland Storage, Inc.
Functions
(FC / iSCSI) (FC / iSCSI)
32 paths (FC) 4 paths
8 paths (iSCSI)
512 disks 512 disks
1024 paths / 512
paths* paths*
8TB 8TB
 3-1