Optional: Changing the RAID mode
You can change to a different RAID mode on the appliance to accommodate your storage and
recovery requirements. You can only change the mode before deploying the appliance Storage Node.
Before you begin
•
You are using any client that can connect to StorageGRID.
•
The client has a supported web browser.
About this task
Before deploying the appliance as a Storage Node, you can choose one of the following volume
configuration options:
•
DDP: This mode uses two parity drives for every eight data drives. This is the default and
recommended mode for all appliances. When compared to RAID6, DDP delivers better system
performance, reduced rebuild times after drive failures, and ease of management. DDP also
provides drawer loss protection in 60-drive appliances.
•
DDP16: This mode uses two parity drives for every 16 data drives, which results in higher storage
efficiency compared to DDP. When compared to RAID6, DDP16 delivers better system
performance, reduced rebuild times after drive failures, ease of management, and comparable
storage efficiency. To use DDP16 mode, your configuration must contain at least 20 drives.
DDP16 does not provide drawer loss protection.
•
RAID6: This mode uses two parity drives for every 16 or more data drives. To use RAID 6 mode,
your configuration must contain at least 20 drives. Although RAID6 can increase storage
efficiency of the appliance when compared to DDP, it is not recommended for most StorageGRID
environments.
Attention:
If any volumes have already been configured or if StorageGRID was previously
installed, changing the RAID mode causes the volumes to be removed and replaced. Any data on
those volumes will be lost.
Steps
1. Access the StorageGRID Appliance Installer:
https://SG6000-CN_Controller_IP:8443
SG6000-CN_Controller_IP
is the IP address of the SG6000-CN controller on any of the three
StorageGRID networks.
2. From the menu bar, select Advanced > RAID Mode.
3. On the Configure RAID Mode page, select the desired RAID mode from the Mode drop-down
list.
4. Click Save.
Related information
NetApp E-Series Systems Documentation Center
Configuring the hardware | 69
Summary of Contents for SGF6024
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