Administrator Guide

4 To add alternate key management servers, type the host name or IP address of another key management server in the Alternate

Hostnames area, and then click Add.

5 If the key management server requires a user name to validate the Storage Center certicate, enter the name in the Username eld.

6 If the key management server requires a password to validate the Storage Center certicate, enter the password in the Password

eld.

7 Click Browse next to the Root CA Certicate. Navigate to the location of the root CA certicate on your computer and select it.

8 Click Browse next to the certicate elds for the controllers. Navigate to the location of the controller certicates on your computer

and select them.

9 Click Next.

Create a Storage Type

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

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-ash 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 specic

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.

Congure Ports

Use the Congure Fault Tolerance pages to congure the front-end and back-end ports of the system.

1 Select Congure Fault Domains next to Fibre Channel or iSCSI to set up fault domains for those ports. If the system has both Fibre

Channel and iSCSI ports, select Congure Fault Domains next to both port types.

2 Select Congure Back-End Ports next to SAS (Back-End) to set up SAS ports to connect to the enclosures.

3 Select Congure Fault Domains next to SAS (Front-End) to set up front-end SAS ports to connect directly to hosts.

4 Click Next.

Storage Center Deployment