Changing the storage tier for S3 metadata

To improve S3 storage performance, you can place NS and OS journals on a faster storage tier than is used for data. The amount of space required for S3 metadata on a separate tier can be calculated as 0.5% – 1% of S3 data size.

Prerequisites

A clear understanding of the concept Storage tiers.
The S3 cluster is created, as described in Creating the S3 cluster.

To change the storage tier for S3 metadata

Admin panel

Open the Storage services > S3 > Settings screen, and then click Storage policies.
In the Metadata storage policy section, select the desired storage tier.
Click Save to apply your changes.

Command-line interface

Use the following command:

vinfra service s3 cluster change [--metadata-tier {0,1,2,3}]

--metadata-tier {0,1,2,3}: Storage tier

For example, to change the storage tier to 2 for S3 metadata, run:

# vinfra service s3 cluster change --metadata-tier 2

The updated parameters will be shown in the vinfra service s3 show output:

# vinfra service s3 show
+-----------------+--------------------------------------------+
| Field           | Value                                      |
+-----------------+--------------------------------------------+
| failure_domain  | 1                                          |
| id              | 0100000000000002                           |
| metadata_policy | failure_domain: 1                          |
|                 | redundancy:                                |
|                 |   m: 1                                     |
|                 |   n: 2                                     |
|                 |   type: raid6                              |
|                 | tier: 2                                    |
| name            | cluster1                                   |
| nodes           | - id: ca334b1d-20a1-1241-96a5-eb9acadb8ecd |
|                 | - id: ab36b523-91dc-e78d-53a7-88baed44541e |
| np              |                                            |
| nusers          | 0                                          |
| protocol        | scheme: https                              |
| redundancy      | m: 1                                       |
|                 | n: 2                                       |
|                 | type: raid6                                |
| s3gw_domain     | dns.example.com                            |
| tier            | 0                                          |
+-----------------+--------------------------------------------+