儲存產(chǎn)品暨產(chǎn)業(yè)基本概要-xxxx-文庫吧資料
2025-01-19 13:32本頁面
【正文】 Inc. Infortrend Internal Confidential Infortrend Confidential What is storage Infortrend Internal Confidential What is Storage? ? Devices which provide capacity for host 9 External RAID System (Storage) Switch HBA。 Host Bus Adapter Read data or Write data from Host to RAID system Infortrend Technology, Inc. Infortrend Internal Confidential Infortrend Confidential RAID Basics Infortrend Internal Confidential 11 What is RAID? Redundant Array of Inexpensive Disks (RAID) Consolidated all disks into a huge, fast, and protected disk Disk Drives = Controller + Infortrend Internal Confidential 12 RAID Benefits: Data Availability Without RAID If a hard drive fails, all data is lost! 01020304050607080901st Qtr 2nd Qtr 3rd Qtr 4th QtrWith RAID When drive fails Data is still intact Infortrend Internal Confidential 13 RAID Benefits: Storage Capacity Without RAID Drive Capacity = Single hard drive capacity 1 With RAID Drive Capacity = N x Single hard drive capacity N drives … … N (In example of RAID 0) Infortrend Internal Confidential 14 RAID Benefits: Performance Performance N x Single Drive Performance Total request execution time With RAID I/O 1 I/O 2 I/O 1 I/O 2 (Disk 1) (Disk 2) Time Saved Without RAID (In example of RAID 0) Software setup Access Time Data Transfer Software Completion Infortrend Internal Confidential 15 RAID Levels ? NRAID ? RAID 0 ? RAID 1 ? RAID 3 ? RAID 5 ? RAID 6 Infortrend Internal Confidential 16 RAID Basics – JBOD Disk 1 Disk 2 Disk 3 Host LUN Disk 4 Disk 5 Disk 6 Disk 1 Disk 2 Disk 3 Disk 4 Disk 5 Disk 6 Infortrend Internal Confidential 17 RAID Basics – NRAID (Disk Spanning) N 6 5 4 3 2 1 Disk 1 N+6 N+5 N+4 N+3 N+2 N+1 N+N’ Disk 2 N+N’+6 N+N’+5 N+N’+4 N+N’+3 N+N’+2 N+N’+1 N+N’+N’’ Disk 3 Disk 1 has N Blocks Disk 2 has N’ Blocks Disk 3 has N’’ Blocks N+N’+N’’ N+N’+1 N+N’ N+3 N+2 N+1 N 3 2 1 Host LUN Disk1 N Blocks Disk2 N’ Blocks Disk3 N’’ Blocks Infortrend Internal Confidential 18 RAID Basics – RAID 0 (Disk Striping) 3N2 16 13 10 7 4 1 Disk 1 17 14 11 8 5 2 3N1 Disk 2 18 15 12 9 6 3 3N Disk 3 N Blocks Striping 3N 11 10 9 8 7 6 5 4 3 2 1 Host LUN Infortrend Internal Confidential 19 RAID Basics – RAID 1 (Disk Mirroring) N 6 5 4 3
公司管理相關(guān)推薦
鄂ICP備17016276號-1