Cloud Storage Document

Cloud Storage Document

雲計算上儲存安排

教會網站在 雲計算上儲存安排.
雲計算資料存放空間 (Storage Space),
有數個級別可以選用.

Cloud Storage

Main Storage (EC2)

這就是網頁及資料庫, 主要存放的地方. 收費用比較高的服務.

  • Main Storage Space 64G 
  •  Amazon Elastic Compute Cloud running Linux/UNIX Reserved Instances
  • Linux/UNIX (Amazon VPC), t2.large reserved instance applied, t2.large instance used 285 Hrs
  • USD 0.0401 hourly fee per Linux/UNIX (Amazon VPC), t2.large instance 720.000 Hrs
  • EBS
  • $0.05 per GB-Month of snapshot data stored – US East (Northern Virginia) 19.193 GB-Mo
  • $0.10 per GB-month of General Purpose SSD (gp2) provisioned storage – US East (Northern Virginia) 23.556 GB-Mo

 Secondary Storage (S3)

 這是 Data Warehouse, 只供存放資料, 並沒有執行程式的功能. 收費很便宜.

  • Amazon Simple Storage Service TimedStorage-ByteHrs
    $0.023 per GB – first 50 TB / month of storage used
  • The total storage size of the sermon file is average 7G each year.

Notes:

  • The pricing is in USD$ currency.
  • Excluded Web Development, Admin, and Operating costs.

Retention Policy

為了更善用資源及金錢.

  1. 因此教會的舊檔案,如講道,文件,影片. 在一段時間(如2年)後須由 Main Storage 搬到 Secondary Storage.
  2. 暫定: 儲存在 Main Storage 的 mp3 檔案, 為2年期.所以2年以上 (即 2018-01-01 以前舊檔案), 即搬了到 Secondary Storage 永久保存 

Exceptional Case

  • 如果取消 Amazon 用戶 或 Amazon AWS 終止營運

What affects to existing users?

對於現在網站使用者並沒有影響, 但對於自製 URL ( Sermons File Format) 連結的使用者, 只是小改變如下:

http://www.pentecostal-mission.org/pendata/sermon/[sermon file ].mp3.
http://www.pentecostal-mission.org/pendata/sermon/20180101H21.mp3

改變為

https://pmbackupfolder.s3.amazonaws.com/sermons/[sermon file ].mp3.
https://pmbackupfolder.s3.amazonaws.com/sermons/20180101H21.mp3.

Privacy Policy

  • 關於 S3 Data Warehouse 保安,私隱, 儲存的資料可參考以下.
  • https://docs.aws.amazon.com/zh_tw/AmazonS3/latest/dev/access-control-block-public-access.html

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Updated: 20200613.02