Linux, SREHard Disk Drive
Block Device : 可以被random access
功用: 永久化儲存
- 機器硬碟
- 固態硬碟
- 網路硬碟( NFS , SAMBA <window os> , iSCSI )
RAID企業級使用(RAID):
RAID 0 : 資料平均分攤於兩顆硬碟
RAID 1 : 兩顆硬碟同時抄寫，兩顆硬碟空間只能被視為一顆硬碟
RAID 5 : 檢查碼可以分散，壞掉其中一顆硬碟可以
Block IO Layer
IO Scheduler:
備份:
https://en.wikipedia.org/wiki/Standard_RAID_levels
額外問題 會把圖片轉成base64放到資料庫裡面嗎
會的話大概多大是可以接受的
or
or
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