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Remove deployment scenarios from erasure code guide (#4607)

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Nitish Tiwari 8 years ago committed by Dee Koder
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      docs/erasure/README.md

29
docs/erasure/README.md
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@ -2,10 +2,6 @@
Minio protects data against hardware failures and silent data corruption using erasure code and checksums. You may lose half the number (N/2) of drives and still be able to recover the data. Minio protects data against hardware failures and silent data corruption using erasure code and checksums. You may lose half the number (N/2) of drives and still be able to recover the data.
## 1. Prerequisites:
Install Minio - [Minio Quickstart Guide](https://docs.minio.io/docs/minio-quickstart-guide)
## What is Erasure Code? ## What is Erasure Code?
Erasure code is a mathematical algorithm to reconstruct missing or corrupted data. Minio uses Reed-Solomon code to shard objects into N/2 data and N/2 parity blocks. This means that in a 12 drive setup, an object is sharded across as 6 data and 6 parity blocks. You can lose as many as 6 drives (be it parity or data) and still reconstruct the data reliably from the remaining drives. Erasure code is a mathematical algorithm to reconstruct missing or corrupted data. Minio uses Reed-Solomon code to shard objects into N/2 data and N/2 parity blocks. This means that in a 12 drive setup, an object is sharded across as 6 data and 6 parity blocks. You can lose as many as 6 drives (be it parity or data) and still reconstruct the data reliably from the remaining drives.
@ -22,28 +18,13 @@ Bit Rot also known as Data Rot or Silent Data Corruption is a serious data loss
Minio's erasure coded backend uses high speed [BLAKE2](https://blog.minio.io/accelerating-blake2b-by-4x-using-simd-in-go-assembly-33ef16c8a56b#.jrp1fdwer) hash based checksums to protect against Bit Rot. Minio's erasure coded backend uses high speed [BLAKE2](https://blog.minio.io/accelerating-blake2b-by-4x-using-simd-in-go-assembly-33ef16c8a56b#.jrp1fdwer) hash based checksums to protect against Bit Rot.
## Deployment Scenarios ## Get Started with Minio in Erasure Code
Minio server runs on a variety of hardware, operating systems and virtual/container environments.
Minio erasure code backend is limited by design to a minimum of 4 drives and a maximum of 16 drives. The hard limit of 16 drives comes from operational experience. Failure domain becomes too large beyond 16 drives. If you need to scale beyond 16 drives, you may run multiple instances of Minio server on different ports. ### 1. Prerequisites:
#### Reference Physical Hardware: Install Minio - [Minio Quickstart Guide](https://docs.minio.io/docs/minio-quickstart-guide)
* [SMC 5018A-AR12L (Intel Atom)](http://www.supermicro.com/products/system/1U/5018/SSG-5018A-AR12L.cfm?parts=SHOW) - SMC 1U SoC Atom C2750 platform with 12x 3.5” drive bays
* [Quanta Grid D51B-2U (OCP Compliant) ](http://www.qct.io/Product/Servers/Rackmount-Servers/2U/QuantaGrid-D51B-2U-p256c77c70c83c118)- Quanta 2U DP E5-2600v3 platform with 12x 3.5” drive bays
* [Cisco UCS C240 M4 Rack Server](http://www.cisco.com/c/en/us/products/servers-unified-computing/ucs-c240-m4-rack-server/index.html) - Cisco 2U DP E5-2600v3 platform with 12x 3.5” drive bays
* [Intel® Server System R2312WTTYSR](http://ark.intel.com/products/88286) - Intel 2U DP E5-2600v3 platform with 12x 3.5” drive bays
#### Reference Cloud Hosting Providers:
* [Packet](https://www.packet.net): Packet is the baremetal cloud provider.
* [Digital Ocean](https://www.digitalocean.com): Deploy an SSD cloud server in 55 seconds.
* [OVH](https://www.ovh.com/us): Build your own infrastructure with OVH public cloud.
* [Onlinetech](http://www.onlinetech.com): Secure, compliant enterprise cloud.
* [SSD Nodes](https://www.ssdnodes.com): Simple, high performance cloud provider with truly personalized support.
## 2. Run Minio Server with Erasure Code. ### 2. Run Minio Server with Erasure Code.
Example: Start Minio server in a 12 drives setup. Example: Start Minio server in a 12 drives setup.
@ -51,6 +32,6 @@ Example: Start Minio server in a 12 drives setup.
minio server /mnt/export1/backend /mnt/export2/backend /mnt/export3/backend /mnt/export4/backend /mnt/export5/backend /mnt/export6/backend /mnt/export7/backend /mnt/export8/backend /mnt/export9/backend /mnt/export10/backend /mnt/export11/backend /mnt/export12/backend minio server /mnt/export1/backend /mnt/export2/backend /mnt/export3/backend /mnt/export4/backend /mnt/export5/backend /mnt/export6/backend /mnt/export7/backend /mnt/export8/backend /mnt/export9/backend /mnt/export10/backend /mnt/export11/backend /mnt/export12/backend
``` ```
## 3. Test your setup ### 3. Test your setup
You may unplug drives randomly and continue to perform I/O on the system. You may unplug drives randomly and continue to perform I/O on the system.

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