Optional: Changing to RAID6 mode (SG5760 only)

If you have an SG5760 with 60 drives, you can change the volume configuration from its default and recommended setting, Dynamic Disk Pools (DDP), to RAID6. You can only change the mode before deploying the StorageGRID Webscale appliance Storage Node.

Before you begin

You have an SG5760. The SG5712 does not support RAID6. If you have an SG5712, you must use DDP mode.

Attention: If any volumes have already been configured or if StorageGRID Webscale was previously installed, changing the RAID mode causes the volumes to be removed and replaced. Any data on those volumes will be lost.

About this task

Before deploying a StorageGRID Webscale appliance Storage Node, you can choose from two volume configuration options:

Dynamic Disk Pools (DDP) – This is the default and recommended setting. DDP is an enhanced hardware data protection scheme that delivers better system performance, reduced rebuild times after drive failures, and ease of management.
RAID6 – This is a hardware protection scheme that uses parity stripes on each disk, and allows for two disk failures within the RAID set before any data is lost.
Attention: Using RAID6 is not recommended for most StorageGRID Webscale environments. Although RAID6 can increase storage efficiency to 88% (compared to 80% for DDP), DDP mode provides more efficient recovery from drive failures.

Steps

Using the service laptop, open a web browser and access the StorageGRID Webscale Appliance Installer: http://E5700SG_Controller_IP:8080
E5700SG_Controller_IP is any of the IP addresses for the E5700SG controller.
From the menu bar, select Advanced > RAID Mode.
On the Configure RAID Mode page, select RAID6 from the Mode drop-down list.
Click Save.