DR Series DR4300 - DR Series System Administrator's Guide

deduplication (--mode dedupe) — The client will process hashing on the data, so that deduplication processing occurs on the server side (client-side deduplication).

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passthrough (--mode passthrough) — The client will pass all data to the DR Series system for deduplication processing (appliance-side deduplication).

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auto (--mode auto)

— The DR Series system will set the deduplication to Dedupe or Passthrough, based on the client’s number of cores and whether it is 32– or 64–bit.

These OST commands are used in the following format: ost --update_client --name --mode.

NOTE: If a RDA with OST client has four or more CPU cores, it is considered to be “dedupe-capable.” However, the client operating mode depends upon how it is configured in the DR Series system (Dedupe is the default RDA with OST client mode). If the administrator did not configure a client to operate in a specific mode and it is dedupe-capable, it will run in the Dedupe mode. If a client is not dedupe-capable (meaning the client has less than four CPU cores), and the administrator sets it to run in the Dedupe mode, it will only run in the Passthrough mode. If a client is set to run in Auto mode, the client will run in the mode setting determined by the media server. The following table shows the relationship between the configured client mode types and the supported client mode based on client architecture type and corresponding number of CPU cores.

Table 1. Supported RDA with OST Client Modes and Settings
Client Mode Settings	32–Bit Client (4 or more CPU cores)	64–Bit Client (4 or more CPU cores)	32–Bit Client (Less than 4 CPU cores)	64–Bit Client (Less than 4 CPU cores)
Auto	Passthrough	Dedupe	Passthrough	Passthrough
Dedupe	Not Supported	Supported	Not Supported	Not Supported
Passthrough	Supported	Supported	Supported	Supported

Supported DR Series System CLI Commands for RDA with OST

The following are the supported DR Series system CLI commands for RDA with OST operations:

administrator@acme100 > ost
Usage:
ost --show [--config]
[--file_history] [--name <name>]
[--clients]
[--limits]

ost --setpassword
ost --delete_client --name <OST Client Hostname>

ost --update_client --name <OST Client Hostname>
--mode <auto|passthrough|dedupe>

ost --limit --speed <<num><kbps|mbps|gbps> | default>
--target <ip address | hostname>

ost --help

ost <command> <command-arguments>
<command> can be one of:
--show Displays command specific information.
--setpassword Updates the OST user password.
--delete_client Deletes the OST client.
--update_client Updates attributes of the OST client.
--limit Limits bandwidth consumed by ost.

For command-specific help, please type ost --help <command>
For example:
ost --help show

NOTE: The --files in the ost --show --file_history command represents replicated files that were processed via the DMA optimized duplication operation. This command displays only up to the last 10 such files. The --name in the ost --show --name command represents the OST container name.

NOTE: For more information about OST-related DR Series system CLI commands, see the DR Series System Command Line Reference Guide.

Parent topic

Understanding RDA with OST Plug-In Diagnostic Logs

Rotating RDA with OST Plug-In Logs for Windows

You can collect diagnostic logs for supported DMAs with the RDA with OST plug-in.

NOTE: The directory location, C:\ProgramData, is considered to be a hidden directory on Windows-based systems. However, you can copy and paste C:\ProgramData\Dell\DR\log\ into your Internet Explorer Address bar or you can enter this into the Windows command prompt window (Start→ All Programs→ Accessories→ Command Prompt).

For more information about RDA with OST plug-ins and logs, see the topics that follow.

Parent topic

Rotating RDA with OST Plug-In Logs for Windows

By default, the Windows log rotation size is set at 10 megabytes (MB). Once a log file has been reached this size, the RDA with OST plug-in automatically renames the existing log file, libstspiDell.log to libstspiDell.log.old, and creates a new log.

Modifying Log Rotation Size

To modify the log rotation size, you can edit the following registry key value:

HKLM\Software\Dell\OST\LogRotationSize

Immediately after modifying this value, the new rotation size value takes effect (meaning that you do not have to restart the backup process).

Parent topic

Collecting Diagnostics Using a Linux Utility

Rotating RDA with OST Plug-In Logs for Linux

You can use a Linux utility called Dell_diags to collect diagnostics from Linux-only clients. This Linux utility is installed by the OST plug-in installer in the /opt/Dell directory. The tool collects the following types of information:

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var/log/libstspiDell.log.*

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usr/openv/netbackup/logs

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usr/openv/logs/nbemm/

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usr/openv/logs/nbrmms/

The Dell_diags diagnostics file is written to the following location: /var/log/diags_client location.

The following example shows the process for collecting the RDA with OST diagnostic logs (the root user account shown represents one that resides on the media server, and is not to be confused with a root user account on the DR Series system):

root@oca3400-74 ~]# ./Dell_diags –collect
Collecting diagnostics...Done
Diagnostics location: /var/log/diags_client//oca3400-74_2012-02-27_23-02-13.tgz

The default log level is set to Error in the OST plug-in, is user-configurable, and can be modified via the DR Series system CLI or GUI.