储存产品暨产业基本概要-XXXX.ppt

1、RAID Fundamental,Agenda,Hard Drive Basics What Is Storage RAID Basics RAID Subsystem Basics Infortrend Storage,Hard Drive Basics,Hard Drive Basics,Top View (Cover Opened),Arm,Platter,Spindle Motor,DriveChassis,Arm Motor Host Bus Adapter,Read data or Write data from Host to RAID system,RAID Basics,Wh

2、at is RAID?,Redundant Array of Inexpensive Disks (RAID),Consolidated all disks into a huge, fast, and protected disk,Disk Drives,=,Controller,+,RAID Benefits: Data Availability,Without RAID,If a hard drive fails, all data is lost!,With RAID,When drive fails,Data is still intact,RAID Benefits: Storag

3、e 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),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

4、),(Disk 2),Time Saved,Without RAID,(In example of RAID 0),Software setup Access Time Data Transfer Software Completion,RAID Levels,NRAID RAID 0 RAID 1 RAID 3 RAID 5 RAID 6,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,RAID Basics NRAID

5、(Disk Spanning),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,RAID Basics RAID 0 (Disk Striping),N Blocks,Striping,RAID Basics RAID 1 (Disk Mirroring),N Blocks,Mirror,RAID Basics RAID 3 (Disk Stri

6、ping with Dedicated Parity Disk),N Blocks,Striping,Dedicated Parity Disk,RAID Basics RAID 5 (Disk Striping with Interspersed Parity Disk),N Blocks,Striping with interspersed parity,RAID Basics RAID 6 (Disk Striping with Two Interspersed Parity Disk),7,4,1,Parity,5,2,Q,Parity,3,8,Q,Parity,9,6,Q,Host

7、LUN,9,8,7,6,5,4,3,2,1,RAID Basics RAID 10 (RAID 0+1),Striping,Mirror,RAID 1 Logical Drive,RAID Basics RAID 30,9,5,1,Disk 1,11,7,3,Disk 2,P(9,11),P(5,7),P(1,3),Disk 3,Striping,RAID 3 Logical Drive,10,6,2,Disk 4,12,8,4,Disk 5,P(10,12),P(6,8),P(2,4),Disk 6,RAID 3 Logical Drive,RAID Basics RAID 50,9,7,P

8、(1,3),Disk 1,11,P(5,7),1,Disk 2,P(9,11),5,3,Disk 3,Striping,RAID 5 Logical Drive,10,8,P(2,4),Disk 4,12,P(6,8),2,Disk 5,P(10,12),6,4,Disk 6,RAID 5 Logical Drive,Mixing Drives with Different Capacity,RAID Parity and XOR,A XOR B = P B XOR P = A A XOR P = B,One Drive Failed,One Drive Failed,A”,A,A,Disk

9、1,B”,B,B,Disk 2,P(A”,B”),P(A,B),P(A,B),Disk 3,A”,B,P(A,B),Disk 1,B”,P(A,B),A,Disk 2,P(A”,B”),A,B,Disk 3,RAID3,RAID5,Rebuild Data,Rebuild Data,Terminologies Physical & Logical Drives,Physical Drives,Logical Drives (LD) (RAID Disk Group),LD 0,LD 1,LD 2,Global Spare,Local Spare,Terminologies Logical Vo

10、lumes,Logical Drives,LD 0,LD 1,LD 2,LV 0,LV 1,Logical Volumes (LV) In ESVA, its also called Pool,LD0 (R5) + LD1 (R5) = LV0 (R50),Terminologies Partitions, Host LUN Mappings,LD 0,LV 1,Logical Volumes - Partitions,Partition 0,Partition 1,Partition 0,Partition 1,Partition 2,Map Host IDs / LUNs,LUN 0,LU

11、N 1,LUN 0,HBA,ID 7,LUN 0,LUN 1,For EonStor only,RAID Subsystem Basics,Storage Architecture,DAS (Direct Attached Storage) Internal DAS External DAS SAN (Storage Area Network) FC SAN iSCSI SAN,DAS (Direct Attached Storage),A external storage system directly attached to a server without a storage netwo

12、rk in between Interface iSCSI, SAS, FC, PCI-E Block-Level access,Internal DAS,External DAS,SAN (Storage Attached Network),A network of storage devices that can be accessed by multiple servers Interface FC, iSCSI, FCoE, Infiniband,Storage System,Block-level access,Application Server,Application Serve

13、r,Application Server,Switch,Storage Architecture Overall,Wide interface options to support different consolidation requirements,SAS cables,SAS,Affordable storage sharing Easy cabling Great performance,Low-cost SAN No special storage management expertise required Extensive reach,iSCSI,FC,Proven techn

14、ology High performance and reliability Great performance,FC SAN vs. IP SAN,Infortrend storageEonStor / EonStor DS / ESVA,Infortrend Developing Items,Mechanical Design ID design Drop / Vibration solution Thermal solution EMI/Safety solution Packing design,Software Design RAID Management software desi

15、gn Application related design (agents, drivers and utilities),Firmware Design RAID kernel design I/O data processing design Add-on functions design (ex. Data Service),Hardware Design System Architecture design Circuit design PCB Layout Signal Integrity solution EMI solution,RAID Controller,RAID Subs

16、ystem,Host,Infortrend RAID Product Family,EonStor DS vs. EonStor,Host interface : FC, iSCSI, SAS Drives: SAS, SATA, 2.5” SATA Form factor: 1U 4U,Snapshot Volume Copy/Mirror Thin-provisioning Storage Tiering Non-disruptive LUN Expansion,DS: Data Service,ESVA: Mid-range Storage,ESVA: Enterprise Scalable Virtualized Architecture Targeted on middle range storage market Equipped advanced Scale-up and Scale-out capabilities Designed based on Storage Vi