Deployment Guide

Create a Storage Type

Select the datapage size and redundancy level for the Storage Center.

Steps

1. Select a datapage size.

• Standard (2 MB Datapage Size): Default datapage size, this selection is appropriate for most applications.

• High Performance (512 KB Datapage Size): Appropriate for applications with high performance needs, or in environments in

which

snapshots are taken frequently under heavy I/O. Selecting this size increases overhead and reduces the maximum available

space in the Storage Type. All-flash storage systems use 512 KB by default.

• High Density (4 MB Datapage Size): Appropriate for systems that use a large amount of disk space and take snapshots

infrequently.

2. Select a redundancy type.

• Redundant: Protects against the loss of any one drive (if single redundant) or any two drives (if dual redundant).

• Non-Redundant: Uses RAID 0 in all classes, in all tiers. Data is striped but provides no redundancy. If one drive fails, all data is lost.

NOTE: Non-Redundant is not recommended because data is not protected against a drive failure. Do not use non-

redundant storage for a volume unless the data has been backed up elsewhere.

3. For Redundant Storage Types, you must select a redundancy level for each tier unless the drive type or size requires a specific

redundancy level

• Single Redundant: Single-redundant tiers can contain any of the following types of RAID storage:

• RAID 10 (each drive is mirrored)

• RAID 5-5 (striped across 5 drives)

• RAID 5-9 (striped across 9 drives)

• Dual redundant: Dual redundant is the recommended redundancy level for all tiers. It is enforced for 3 TB HDDs and higher and

for 18 TB SSDs and higher. Dual-redundant tiers can contain any of the following types of RAID storage:

• RAID 10 Dual-Mirror (data is written simultaneously to three separate drives)

• RAID 6-6 (4 data segments, 2 parity segments for each stripe)

• RAID 6-10 (8 data segments, 2 parity segments for each stripe.)

4. Drive Addition is selected by default. Leave this option selected.

5. Click Next.

Fault Tolerance

Set up Fibre Channel, iSCSI and SAS ports with redundant paths for fault tolerance.

Steps

1. Select the checkbox of each type of port you want to configure. You must select at least one type to continue.

NOTE:

If a port type is grayed out, no ports of that type have been detected.

2. Click Next.

Configure Fibre Channel Ports

For a Storage Center with Fibre Channel front-end ports, the Review Fault Domains page displays information about the fault domains

that were created by the Storage Center.

Prerequisites

One port from each controller within the same fault domain must be cabled.

NOTE:

If the Storage Center is not cabled correctly to create fault domains, the Cable Ports page opens and explains

the issue. Click Refresh after cabling more ports.

Steps

1. Review the fault domains that have been created.

Deploy the Storage Center