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 certificate, enter the name in the
Username field.
6. If the key management server requires a password to validate the Storage Center certificate, enter the password in the
Password field.
7. Click Browse next to the Root CA Certificate. Navigate to the location of the root CA certificate on your computer and
select it.
8. Click Browse next to the certificate fields for the controllers. Navigate to the location of the controller certificates on your
computer and select them.
9. Click Next.
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.
Configure Ports
Use the Configure Fault Tolerance pages to configure the front-end and back-end ports of the system.
Steps
1. Select Configure 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 Configure Fault Domains next to both port types.
2. Select Configure Back-End Ports next to SAS (Back-End) to set up SAS ports to connect to the enclosures.
3. Select Configure Fault Domains next to SAS (Front-End) to set up front-end SAS ports to connect directly to hosts.
Storage Center Deployment
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