MyFavMirrors
/
minio
mirror of https://github.com/minio/minio.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Fix `STANDARD` defaults, point to new docs site. (#11800)

This commit is contained in:
Ravind Kumar 2021-03-16 15:04:28 -04:00 committed by GitHub
parent 771dea175c
commit 980311fdfd
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 12 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
docs/erasure/storage-class/README.md
View File

@ -2,6 +2,8 @@
MinIO server supports storage class in erasure coding mode. This allows configurable data and parity disks per object. MinIO server supports storage class in erasure coding mode. This allows configurable data and parity disks per object.
This page is intended as a summary of MinIO Erasure Coding. For a more complete explanation, see https://docs.min.io/minio/baremetal/concepts/erasure-coding.html.
## Overview ## Overview
MinIO supports two storage classes, Reduced Redundancy class and Standard class. These classes can be defined using environment variables MinIO supports two storage classes, Reduced Redundancy class and Standard class. These classes can be defined using environment variables
@ -43,7 +45,16 @@ You can calculate _approximate_ storage usage ratio using the formula - total dr
Parity blocks can not be higher than data blocks, so `STANDARD` storage class parity can not be higher than N/2. (N being total number of disks) Parity blocks can not be higher than data blocks, so `STANDARD` storage class parity can not be higher than N/2. (N being total number of disks)
Default value for `STANDARD` storage class is `N/2` (N is the total number of drives). The default value for the `STANDARD` storage class depends on the number of volumes in the erasure set:
| Erasure Set Size | Default Parity (EC:N) |
|------------------|-----------------------|
| 5 or fewer | EC:2 |
| 6-7 | EC:3 |
| 8 or more | EC:4 |
Prior to the ``RELEASE.2021-01-30T00-20-58Z`` MinIO release, the default `STANDARD` value was `EC(N/2)` where `N` was the number of erasure set drives.
For more complete documentation on Erasure Set sizing, see the [MinIO Documentation on Erasure Sets](https://docs.min.io/minio/baremetal/concepts/erasure-coding.html#erasure-sets).
### Allowed values for REDUCED_REDUNDANCY storage class ### Allowed values for REDUCED_REDUNDANCY storage class