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Configure and Customize Dell PowerFlex v3.6.x

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Add acceleration devices

Acceleration devices can be added to a system.

Prerequisites

Ensure that at least one suitable Acceleration Pool is defined.

All devices in a Storage Pool must be the same media type. Ensure that you know the type of devices that you are adding to the system, and that the Storage Pool to which you are adding devices is configured to receive that media type.RFcache can only be used for medium granularity Storage Pools.

NOTE:The RFcache feature is only supported by 512 Byte devices for the cache use case. RFcache is not supported on 4K devices used for cache. However, RFcache acceleration of 4K storage devices is supported.

About this task

Device data is erased when devices are added to an SDS. When adding a device to an SDS, PowerFlex will check that the device is clear before adding it. An error will be returned, per device, if it is found not to be clear. A device that has been used in the past can be added to the SDS by using the Force Device Takeover option. When this option is used, any data that was previously saved on the device will be lost. For more information, see "Configuring direct attached storage" in the Getting to Know Dell PowerFlex Guide.

You can assign a name to devices. This can be particularly helpful for identifying SDS devices in the future, because the name will remain constant, even if the path changes. Device names must meet the following requirements:
  • Contains less than 32 characters
  • Contains only alphanumeric and punctuation characters
  • Is unique within the object type
NOTE:Devices can be tested before going online. Various testing options are available the Advanced area of the window (default: Test and Activate device ).

Steps

  1. From the PowerFlex GUI, in the left pane, click Configuration > SDSs.
  2. In the right pane, click Add Device.
  3. In the Add Device to SDS <SDS name> dialog box, in the Acceleration Devices tab, add the following required parameters for the storage device:
    1. Enter the file path of the device.
    2. Enter the name of the device
    3. Select the relevant Acceleration Pool.
    4. Click Add Device
      The device is added to the Devices list.
  4. Expand Advanced for more options. Configure the following options (recommended for advanced users):
    1. Select one of the device testing options:
      • Test and activate device. Enter the timeout in seconds.
      • Test only
      • Activate without test
    2. Click Yes to force device takeover. This option erases data from a device that was previously used
  5. Click Add Devices.
  6. Verify that the operation completed successfully and click Dismiss.

Results

Acceleration devices are added to the SDS.

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