Dell PowerFlex 4.5.x Administration Guide

Configure storage pool settings

Configure storage pool settings, including checksum, zero padding, and compression.

1. On the menu bar, click Block > Storage Pools.
2. In the list of storage pools, select the relevant storage pool, and click Modify > General Settings.
3. In the Storage Pool Settings dialog box, configure the following settings for the storage pool:

   Option	Description
   Enable Rebuild/Rebalance	By default, the rebuild/rebalance features are enabled in the system because they are essential for system health, optimal performance, and data protection. CAUTION: Rebuilding and rebalancing are essential parts of PowerFlex and should only be disabled temporarily, in special circumstances. If rebuilds are disabled, redundancy will not be restored after failures. Disabling rebalance may cause the system to become unbalanced even if no capacity is added or removed.
   Enable Inflight Checksum	Inflight checksum protection mode can be used to validate data reads and writes in storage pools, in order to protect data from data corruption.
   Enable Persistent Checksum	Persistent checksum can be used to support the medium granularity layout in protecting the storage device from data corruption. Select validate on read to validate data reads in the storage pool. NOTE:If you want to enable or disable persistent checksum, you must first disable the background device scanner from the storage pool.
   Enable Zero Padding Policy	Use the zero-padded policy when the storage pool data layout is fine granularity. The zero-padded policy ensures that every read from an area previously not written to returns zeros.
   Enable Compression	For fine granularity storage pools, inline compression allows you to gain more effective capacity.

4. Click Apply.