Modifying the Advanced Properties of a Storage Pool

Procedure

1. Log in to DeviceManager.
2. Choose Provisioning > Storage Pool.
3. Select the storage pool whose properties you want to modify and click Properties.

   The Properties of Storage Pool dialog box is displayed.

4. Set advanced properties for the storage pool.
   1. In the Properties of Storage Pool dialog box, click the Advanced tab.

      Table 5-6 describes the related parameters.

      Table 5-6 Advanced parameters of a storage pool

      Parameter	Description	Setting
      Data Protection Capacity Alarm Threshold (%)	An alarm will be generated when the percentage of the storage pool's data protection capacity to its total capacity exceeds the data protection capacity alarm threshold.	[Value range] 1 to 100 [Default Value] 100
      Used Capacity Alarm Threshold (%)	If the storage pool contains a LUN with value-added services or a thin LUN, an alarm will be generated when the percentage of the storage pool's used capacity to its total capacity reaches the used capacity alarm threshold. Alarms are generated in the following three circumstances: When the used capacity reaches the used capacity alarm threshold, the system generates an alarm informing that the capacity of storage pool is insufficient. When the used capacity alarm threshold is not greater than 88 and the used capacity reaches 90%, the system generates an alarm informing that the storage pool is running out. When the used capacity alarm threshold is greater than 88 and the used capacity reaches (used capacity alarm threshold + 2) %, the system generates an alarm informing that the storage pool is running out. NOTE: If the used capacity alarm threshold is set to 85: When the used capacity reaches 85%, the system generates an alarm informing that the capacity of storage pool is insufficient. When the used capacity reaches 90%, the system generates an alarm informing that the storage pool is running out. If the used capacity alarm threshold is set to 91: When the used capacity reaches 93%, the system generates an alarm informing that the storage pool is running out. A proper used capacity alarm threshold helps you monitor the capacity usage of a storage pool.	[Value range] 1 to 95 [Default Value] 80
      Pre-allocated Capacity for Data Protection (%)	Indicates the percentage of the capacity reserved for the data protection service in the total capacity of a LUN. The pre-allocated capacity will be deducted from the storage pool. NOTE: Assume that the pre-allocated capacity for data protection is set to 10% in a storage pool. If a 100 GB LUN and a 50 GB LUN are created in the storage pool and are both configured with the data protection service, then the system will reserve (100 x 10% + 50 x 10%) GB data protection capacity in the storage pool. This parameter applies to V300R006C60V500R007C50 and later versions. By default, Pre-allocated Capacity for Data Protection (%), Max. Capacity Reserved for Data Protection, and Fixed Capacity Reserved for Data Protection are not displayed. To display these options, click All.	[Value range] 0 to 100 [Default value] 0
      Max. Capacity Reserved for Data Protection	Maximum capacity reserved for the data protection service.	[Value range] Only digits or -- is allowed. NOTE: The maximum capacity reserved for data protection must be less than the total capacity of the storage pool. -- indicates that the maximum capacity reserved for data protection is not limited but must be less than the total capacity of the storage pool. [Default value] --
      Fixed Capacity Reserved for Data Protection	Fixed capacity reserved for the data protection service.	[Value range] 0 to maximum capacity reserved for data protection NOTE: The fixed capacity reserved for data protection cannot exceed the maximum capacity reserved for data protection. [Default value] 0

   2. Click OK.

      The Execution Result dialog box is displayed, indicating that the operation succeeded.

   3. Click Close.