A Storage Pool is a group of storage devices within a Protection Domain. Each time that you add devices to the system, you must map them to either Storage Pools or Acceleration Pools. Create Storage Pools before you start adding SDSs and storage devices to the system. You can modify Storage Pools post-installation using all management clients, with the exception of OpenStack.
Use
RMcache on all SDSs in the Storage Pool. You can change this setting later on specific SDSs (they can be individually configured not to use
RMcache). For more information, see the
Configure and Customize
PowerFlex Guide.
--dont_use_rmcache
Do not use
Read RAM Cache on any SDSs in the Storage Pool (default)
Determines whether the system stores the data of this Storage Pool's writes in the SDS
Read RAM Cache, or not. The default is to store the write data in cache (cached). You can change this setting later, using the command
set_rmcache_write_handling_mode.
NOTE:Only I/Os that are multiples of 4k bytes can be cached.
--media_type<TYPE>
{HDD |
SSD}
Media type of the devices in the Storage Pool, where the devices will all be HDD or SSD.
--external_acceleration<TYPE>
External acceleration for the device where
<TYPE> can be one of the following:
none
All devices are not accelerated by a non-PowerFlex read or write cache (default).
read
All devices are accelerated by a non-PowerFlex read cache.
write
All devices are accelerated by a non-PowerFlex write cache.
read_and_write
All devices are accelerated by both non-PowerFlex read and write cache.
Indicates the layout of the data for devices in the Storage Pool, where
<LAYOUT> can be medium granularity or fine granularity. The default is medium granularity.
--compression_method<METHOD>
When using fine granularity data layout, this Indicates the compression method to be used.
<METHOD> can be one of the following:
none
No compression applied.
normal
Normal compression applied.
--fine_granularity_acceleration_pool_name<NAME>
Name of the NVDIMM Acceleration Pool to be used for fine granularity.
--fine_granularity_acceleration_pool_id<ID>
ID of the NVDIMM Acceleration Pool to be used for fine granularity.
Assign each Storage Pool a meaningful name. When a name has not been defined, the system may display default system-defined names that use the Storage Pool’s IDs.
Each volume name should conform to the following rules:
Contains fewer than 32 characters
Contains only alphanumeric and punctuation characters
Is unique within the object type
NOTE:PowerFlex objects are assigned a unique ID that can be used to identify the object in CLI commands. You can retrieve the ID via a query or through the object’s property sheet in the
PowerFlex GUI.
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