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How do I restore if I lose both my OS drive and a data drive and don’t have backups of my RAID config?

If you are in the unique case whereas you lost a drive and at the same time you lost your OS and don’t have a backup of your configuration database, all is not lost. However, you will need to follow the steps below: 1. Import your configuration, which is stored on the first PPU.    Full Article…


Advanced SMART configurations

Both smartctl path and type mappings can be changed in FlexRAID if you have an advanced system configuration. Advanced configurations are done on the advanced tab of the smart monitoring UI. 1. Path mappings: Takes the form of: <MountPoint>=<DEV PATH> Ex: D:\=/dev/sdb Consult for all the options for your OS (very first section that  Full Article…


Linux Increase The Maximum Number Of Open Files / File Descriptors (FD)

By default, the maximum number of open fd descriptors is pretty low. Please see this article on how to increase it. As reported in this bug report (, changing the user level limit seems to have the most effect. As per the comments in that report, the user had to add the following to  Full Article…


Web UI Services (GWT-RPC & JSON-RPC)

FlexRAID RESTful (GWT-RPC & JSON-RPC) Services FlexRAID is an integrated software stack, and its core functionality runs as a “lean and mean” service engine. The core service uses TCP for command communication in order to minimize its dependency on higher level protocol libraries and allow any client written in any language to interact with it.  Full Article…


Command: cruise-control

Purpose: This command allows you to execute cruise control related operations. Format: cruise-control ismounted <driveGUID> //whether the drive represented by the passed in GUID is mounted to a drive letter or folder. cruise-control islocalsystem //whether FlexRAID is running under the local system account or another user account cruise-control guids //returns the list of GUIDs for  Full Article…


Command: view

Purpose: This command allows you to manage the storage pool’s virtual drive. Format: view <INSTANCE_ID> <action> [extra params] Where INSTANCE_ID is in the form: class1_<POOL_ID> (for the new driver) or class2_<POOL_ID> (for the old driver) The POOL_ID is a number starting from 0 and increasing for each pool created. Example: class1_0 or class2_0 (for the  Full Article…