Dell DX6000 Manuale introduttivo - Pagina 23

• If the capacity of a node in your cluster is set to the default of 2TB for an extended period of time,

verify all of the following:

• You have a valid DX Storage license.

• You set the licenseFileURL to the location of the license.

• The location you specified is available to the cluster. If you set licenseFileURL to a location

that became unavailable to the cluster soon after it was booted, DX Storage uses the default

2TB license because it was the last known valid license.

DX Storage checks every 15 minutes for license updates. Do not modify your license file manually

because doing so invalidates the license's electronic signature, causing DX Storage to revert to the

default license. By default, the license file is /caringo/license.txt on the node's USB flash

drive or in the configuration file on the web or FTP server.

4.1.2. About licenseFileURL

You can specify alternate file names and locations using the licenseFileURL option in the

node or cluster configuration file. This is the default configuration if booting from a CSN. DNS

names for FTP and HTTP hosts are supported as long as the DNS server and domain information

is set by DHCP or is in the node and/or cluster configuration files. Any errors processing the

licenseFileURL parameter are visible on the Linux system console during boot-up but will not

prevent a successful boot.

Example licenseFileURL configurations:

licenseFileURL=http://192.168.0.103/license.txt

licenseFileURL=ftp://myftpserver/storagecluster_license.txt

licenseFileURL=file:///caringo/customerlicense.txt

Note

If you change the name of the license file for the local USB drive, the file must still remain

in the caringo directory or one of its subdirectories.

The spaceWarnLevel configuration parameter specifies the maximum storage space (the lesser

of the total physical space or the licensed space). By default, it is set to 25% of available space. The

spaceErrLevel parameter specifies the threshold of minimum available space on the node. By

default, it is set at 10% of available space.

To assist in monitoring the available space in your cluster, an announcement displays in the logs

and on the Admin Console within an hour of the time when the spaceWarnLevel threshold is been

reached. An error displays within an hour of when spaceErrLevel been reached.

When available space is zero, additional writes to the cluster are refused. Internal replication and

relocation continue and previously stored data is still readable; no data will be lost or corrupted.

To increase your licensed capacity, contact your Sales or Support representative.

In addition to capacity validation, DX Storage might check hardware validity for some OEM-specific

implementations of DX Storage. In these instances only, if DX Storage is installed on unsupported

hardware, a critical error is logged and the node shuts itself down 60 seconds later.

Version 5.0

December 2010