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Code42 Support

Device Backup - Network reference

Applies to:
  • CrashPlan PRO
  • Code42 CrashPlan (previously CrashPlan PROe)

Overview

The settings in Settings > Device Backup > Network allow administrators to define the following connection settings for the Code42 CrashPlan app:

  • Backup data transfer rates for:
    • LAN and WAN connections
    • When the user is present and away
    • Peak and off-peak business hours (requires version 5.1 or later of the Code42 server)
  • Proxy settings
  • Network interface exclusions
  • Wireless network exclusions
  • TCP/IP buffer size

Sending limits

In version 5.1 and later of the Code42 server, sending limits are defined by either a standard setting that applies the same values at all times, or by a scheduled setting that applies different values for peak and off-peak business hours. Version 5.0.x of the Code42 server only supports standard sending limits.

Standard sending limits

Standard network sending limits

Item Description
a Standard or scheduled sending limits
Version 5.1 and later
Selects standard or schedule-based sending limits. Standard sending limits apply the same values at all times. Scheduled sending limits allow administrators to specify different data transfer rates for peak and off-peak business hours.
b Limit sending rate when away to 1

Defines the backup data transfer rate when the user is away from the device.

  • Backup progress is slower at lower sending rates.
  • Setting the limit to None means no throttling takes place.

On Linux devices, the CrashPlan app always uses the "away" setting.

Minimum recommended sending Limits
When setting network sending limits, do not set a rate lower than 0.10 Mbps or 100 Kbps. Rates lower than 0.10 Mbps can prevent devices from communicating with the Code42 server, which can stop backups and future configuration changes. To stop backup entirely, do not adjust sending limits. Instead, you can pause backup or only allow backups at specified times.
c Limit sending rate when present to 1
Windows and OS X only

Defines the backup data transfer rate when the user is present.

  • Backup progress is slower at lower sending rates.
  • Setting the limit to None means no throttling takes place.

On Linux devices, the CrashPlan app always uses the "away" setting.

d WAN Defines values for each device connecting to a destination's routable IP address (WAN connections typically mean the device is not “on your network”). Override the default settings by specifying Network overrides.
e LAN Defines values for each device connecting to a destination's non-routable IP address (LAN connections typically mean the device is “on your network”). Override the default settings by specifying Network overrides.
f Lock Prevents users from changing these settings.
g Push Applies these settings to existing devices.
Changes to these settings may take up to 24 hours to apply to all devices in your Code42 environment. To apply settings immediately, configure and push the settings individually for each organization.

1 These settings appear in the General section in version 5.0.1. In version 5.1 and later, they appear in the Sending Limits section.

Scheduled sending limits

Code42 CrashPlan (previously CrashPlan PROe) only.

Scheduled Sending Limits

Item Description
a Standard or scheduled sending limits

Selects standard or schedule-based sending limits. Standard sending limits apply the same values at all times. Scheduled sending limits allow administrators to specify different data transfer rates for peak and off-peak business hours.

Scheduled sending limits requires version 5.1 or later of the Code42 server and version 4.5 or later of the 4.x-series CrashPlan app, or version 5.1 or later of the 5.x-series CrashPlan app. Older versions of the CrashPlan app always use the During peak business hours (d) settings.

b Peak business hours schedule Indicates which days use peak business hours sending limits.
c Time Sets start and end time for peak business hours each day. Times must be entered in the 24-hour clock format. Scheduling is based on each device’s local time.
d During peak business hours Displays data transfer rates for backup activity during the peak business hours schedule.
  • Backup progress is slower at lower sending rates.
  • Setting the limit to None means no throttling takes place.

On Linux devices, the CrashPlan app always uses the "away" setting.

Limit sending rate when away to

Limits the backup data transfer rate during the peak business hours schedule when the user is away from the device.

Limit sending rate when present to Limits the backup data transfer rate during the peak business hours schedule when the user is present.
e During off-peak business hours Displays data transfer rates for backup activity outside the times defined in the peak business hours schedule.
  • Backup progress is slower at lower sending rates.
  • Setting the limit to None means no throttling takes place.

On Linux devices, the CrashPlan app always uses the "away" setting.

Limit sending rate when away to Limits the backup data transfer rate during off-peak business hours when the user is away from the device.
Limit sending rate when present to Limits the backup data transfer rate during off-peak business hours when the user is present.
f WAN Limits the backup data transfer rate for each device connecting to a destination's routable IP address (WAN connections typically mean the device is not “on your network”). Override the default settings by specifying Network overrides.
g LAN Limits the backup data transfer rate for each device connecting to a destination's non-routable IP address (LAN connections typically mean the device is “on your network”). Override the default settings by specifying Network overrides.
h Lock Prevents users from changing these settings.
i Push Applies these settings to existing devices.
Changes to these settings may take up to 24 hours to apply to all devices in your Code42 environment. To apply settings immediately, configure and push the settings individually for each organization.

General

General settings

Item Description
a Sending message buffer size 1 Size of outbound buffer (the amount of data that's allowed to be "in flight" at one time over the network between the source and the destination).
Recommended for experienced network administrators only. Incorrectly configuring these settings can adversely affect network performance.
b Receiving message buffer size 1 Size of inbound buffer (the amount of data that's allowed to be "in flight" at one time over the network between the source and the destination).
Recommended for experienced network administrators only. Incorrectly configuring these settings can adversely affect network performance.
c TCP packet QoS

Defines the Differentiated Services Code Point (DCSP) value for devices on OS X and Linux. (On Windows devices, QoS must be set via Group Policy.) You can enter a custom DCSP value, or choose from one of the following preset values:

  • Low: 2
  • Normal: 0
  • Reliability: 4
  • Throughput: 8

Requires QoS-capable router. Recommended for experienced network administrators only. In most cases, Code42 recommends using the default TCP packet QoS settings. Incorrectly configuring these settings can adversely affect network performance and is beyond the scope of our Customer Champions..

d Network overrides

Code42 CrashPlan (previously CrashPlan PROe) only

Enables administrators to override the default WAN and LAN definitions and add specific network ranges. For example, specifying your VPN network range to always use WAN settings enables throttling backups over the VPN.

Use Classless Inter-Domain Routing (CIDR) notation to enter network overrides:

  • IPv4 example: 192.168.1.0/24
  • IPv6 example: 2001:db8::/32
e WAN Defines values for each device connecting to a destination's routable IP address (WAN connections typically mean the device is not “on your network”). Override the default settings by specifying Network overrides (d).
f LAN Defines values for each device connecting to a destination's non-routable IP address (LAN connections typically mean the device is “on your network”). Override the default settings by specifying Network overrides (d).
g Lock Prevents users from changing these settings.
h Push Applies these settings to existing devices.
Changes to these settings may take up to 24 hours to apply to all devices in your Code42 environment. To apply settings immediately, configure and push the settings individually for each organization.

1 In most circumstances, the performance gain from tuning the buffer size is negligible, and incorrectly configuring these settings can adversely affect network performance. Some connections, especially over high-latency networks, may benefit from adjustments to buffer sizes, but calculating these values is a topic for experienced network administrators, and beyond the scope of our Customer Champions.

Proxy

setting device network proxy

Item Description
a Enabled Enables network proxy.
b PAC URL

URL or file path of your Proxy Auto-Config (PAC) file.

  • URL example 1: http://server.example.com/proxy.pac
  • URL example 2: http://192.0.2.50/proxy.pac
  • File path example (Windows): file:///c:/proxy.pac
c Lock Locks this setting to prevent users from changing it from the CrashPlan app.
d Push Applies this setting to existing devices in addition to new devices.

Excluded network interfaces

settings device default network interfaces

Item Description
a - Enter interface that you want to exclude via a regular expression.
b + Adds text in text box to list of network interfaces to exclude.
c - Interfaces to exclude.
d Import Displays window in which you can paste the contents of a text file of network interfaces you wish to exclude.
e Export Displays window from which you can copy the contents of the excluded network interfaces list, which you can in turn paste into your favorite text editor for editing.
f Lock Locks this setting to prevent users from changing it from the CrashPlan app.
g Push Applies this setting to existing devices in addition to new devices.

Network interfaces are excluded only on OS X and Windows devices.

Excluded wireless networks

device defaults network wireless

Item Description
a - Specifies wireless network SSID that you want to exclude via a regular expression.
b + Adds text in text box to list of wireless network SSID to exclude.
c - Wireless networks to exclude.
d Import Displays window in which you can paste the contents of a text file of wireless network SSIDs you wish to exclude.
e Export Displays window from which you can copy the contents of the wireless network SSID list, which you can in turn paste into your favorite text editor for editing.
f Lock Locks this setting to prevent users from changing it from the CrashPlan app.
g Push Applies this setting to existing devices in addition to new devices.

Wireless networks are excluded only on OS X and Windows devices.

Advanced TCP/IP

Advanced TCP/IP

Item Description
a Send buffer size

Specifies if devices obey operating system default for send buffer size. Override the default settings by specifying buffer size.

b Receive buffer size

Specifies if devices obey operating system default for receive buffer size. Override the default settings by specifying buffer size.

c Lock Locks this setting to prevent users from changing it from the CrashPlan app.
d Push Applies this setting to existing devices in addition to new devices.