10400424-002 04/2013
©2013 Overland Storage, Inc.
3-1
Chapter 3
Functions
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.
* 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).
Paths/Disks
(FC / iSCSI/SAS)
(FC / iSCSI)
(FC / iSCSI)
Paths / a Disk
32 paths (FC)
8 paths (iSCSI)
2 paths (SAS)
32 paths (FC)
8 paths (iSCSI)
4 paths
Number of Disks
512 disks
512 disks
512 disks
Number of paths
(Detected by the OS)
1024 paths / 512 paths* 1024 paths / 512
paths*
1024 paths / 512
paths*
Size of a Disk
8TB
8TB
8TB