1、HP SureStore E XP Disk Array,Overview,XP ARRAY,Disks 15GB to 182GB,CACHE,XP Architecture,XP Disk Emulation,Recommended for drives 20 Gb,Suggested for 36Gb drive,XP Characteristics,XP 256(A5700A) Number of slots : 256 Number of disks : 240 Numbers of spares : 8+8 Type of disks : 15/36/47/72GB Cache s

2、ize :1/16GB Shared memory : 128 to 512MB Numbers of ports : 4/32 Type of ports : SCSI/FC/ESCON Internal I/O :480-270MB/s Numbers of Ldev : 1024 Numbers of LUN : 2048,XP 48(A5920A) 48 48 4 18/47/72/180GB 1/16GB 256/1.2GB 4/24 FC/ESCON 1.6GB/s 4096 8192,XP 512(A5950A) 576 512 8+8 18/47/72/180GB 1/32GB

3、 256MB/1.5GB 4/32 FC/ESCON 3.2 GB/s 4096 8192,XP Caracteristics,XP 128(A7906A) Number of slots : 128 Number of disks : 128 Numbers of spares : 4+4 Type of disks : 36/72GB Cache size :2/32GB Shared memory : 512MB to 3GB Numbers of ports : 4/24 Type of ports : ESCON/FC1/2 Internal I/O :5 GB/s Numbers

4、of Ldev : 8192 Numbers of LUN : 12288,XP 1024(A7876A) 1024 1024 8+8 36/72GB 2/64GB 512MB to 3GB 4/32 ESCON/FC 1/2 10 GB/s 8192 16384,XP256 Configurations,Basic Unit has 1 Controller (DKC) and 1 Disk Unit (DKU),Full Unit has 1 Controller (DKC) and 4 Disk Units (DKU),XP512 Configurations,Basic Unit ha

5、s 1 Controller (DKC) and 2 Disk Unit (DKU),Full Unit has 1 Controller (DKC) and 6 Disk Units (DKU),XP48 Configurations,Basic Unit has controller (DKC) and Disk units (DKU) in 1 unit,XP128 Configurations,Basic Unit has controller (DKC) and Disk units (DKU) in 1 unit,XP1024 Configurations,Basic Unit h

6、as 1 Controller (DKC) and 1 Disk Unit (DKU) A Full Unit has 1 Controller (DKC) and 4 Disk Units (DKU),Disk Array Controller (DKC) and Disk Unit (DKU),XP Configurations multi-rack,DKC,DKU,DKU,DKU,DKU,R1 R2,L2 L1,Frame name,XP Front (XP1024),DKU,SVP,Front logic gate,Batteries controlers,Breakers,Canis

7、ter (HDU),Disk (HDD),Breakers,DKC,Control panel,XP Front cage cards,Slot Identifier,Cluster 1 (CL1),Cluster 2 (CL2),A,B,C,D,A,B,C,D,ie- 4 Port FC CHIP pairs,E,F,G,H,J,K,L,M,N,Q,P,R,N,Q,P,R,J,K,L,M,E,F,G,H,N P Q R S T U V W X Y Z,XP Rear Logic Gate,M L K J H G F E D C B A,Slot Identifier,Cache Switch

8、,Access Control Processors (Internal FC Channel Adapters) L, K, J, H,Cache Switch,Access Control Processors (Internal FC Channel Adapters) E, D, C, B,F/G= Cache,Note - Slot “I” is not used (too easily confused with numeric one),Cluster 2 (CL2),Cluster 1 (CL1),XP Rear Logic Gate,R1,L1,L2,R2,ACP Pairs

9、 separated between two power boundaries,DKC Rear,Domain 3,Domain 4,Domain 2,Domain 1,XP ACP domains,2 SCSI Buses,2 Power Supplies,XP HDU,XP256,XP512/48,XP1024/128,2 Power Supplies,12 HDDs “Hard Disks”,2 FC_AL,4,00,04,02,06,08,0A,0C,0E,01,03,05,07,09,0F,0D,0B,JMP,JMP,F,S,W,1,0,F,S,W,1,1,F,S,W,2,1,F,S

10、,W,2,0,10,14,12,16,18,1A,1C,1E,11,13,15,17,19,1F,1D,1B,JMP,JMP,2 Power Supplies,32 HDDs “Hard Disks”,2 FC_AL,Dynamic duplexed write cache used for data transfer All writes duplexed Separate power boundaries Non-volatile cache protected 48 hours with batteries Duplexed shared memory used for ACP cont

11、rol and command,Duplexed writes,Duplexed Write Cache,16 GB Max for XP256 & XP48 32 GB Max for XP512 & XP128 64 GB max for XP1024,Memory,Read data,Write Data Copy A,Write Data Copy B,70% Maximum Duplex Write limit (optimal),50% Default Duplex Write limit (default),30% Minimum Duplex Write limit (opti

12、onal),Cache A,Cache B,HP XP Cache Dynamic Write Line,Cache Memory,Power Boundary,Shared Memory (mirrored),Ldev Map,Ldev Map,Cache Map,Cache Map,Cache Management: Fast Write,Directory,Data,1. CHIP initiates a search on the cache directory 2. Data is transferred from the host to the cache and duplexed

13、 3. Host is notified of I/O completion 4. Directory in cache is modified to reflect the most recently used data 5. Data is de-staged to the disk in background,DKAs,Hardware and Architecture,XP256 Installation,HP XP256 Storage Architecture,Control Bus,Control Bus,Service Processor (SVP),Data Bus,Data

14、 Bus,Hot Line,Cache - A,Cache - B,Intel i960,LCP,FM,Intel i960,LCP,FM,Intel i960,LCP,FM,Intel i960,LCP,FM,Shared memory B,Shared memory A,SCSI CTL,i960,FM,SCSI CTL,DRR,SCSI CTL,i960,FM,SCSI CTL,DRR,Intel i960,LCP,FM,Intel i960,LCP,FM,Intel i960,LCP,FM,Intel i960,LCP,FM,LAN,CHIPs,ACPs,Cache Memory SI

15、MM Location XP256,Cache SIMMs are 128 Mb each, installed in sets of 4 SIMMs on each Cache Board. The second Cache board must be duplicated. The numbers indicate the installation order. Upgrades are 8 SIMMs per order For a total of both boards of 1Gb. SIMM puller is required to remove the SIMM,Shared

16、 Memory Location XP256,Shared Memory Located on Basic cache boards (F & G) SIMM size is 64 Mb (HP installations) Max is 512 Mb (4 SIMMs each board) Installed as sets of 2 (128Mb 1 on ea bd.) SIMM puller is required to remove the SIMM,15, 36.9, 47.1, 72 GB Disk Drives,High reliability design Dual spi

17、ndle bearings Anti-shock mounted disk Microprocessor controlled Downloadable micro-code Dual ported, SCSI-2 2.5 and 3.5 inch form factor Third generation MR heads,HP XP256 Mainframe Disk Technology,Be careful when removing the cover during maintenance, to ensure the HDD interlock jumper is not dislo

18、dged resulting in HDD failure. 72Gb HDD shown, notice jumper is different.,R1,L2,L1,R2,0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7,Array Group (for example slot 3 in canisters 0, 1, 2, & 3 in DKU-R2 are part of the same RAID 5 array group),0,1,2,3,7,6,5,4,HDD Location Think of the letter “C” when trying to iden

19、tify a HDDs location,HP XP256 Hardware Schematic,Draw a CU 80% model.,HDUs In Frame R1 or Frame L1,HDUs In Frame R2 or Frame L2,Slot never used due to SCSI only supporting 15 drives plus controller.,Note - The numbers which are shown are logical identifiers for the disk drives not SCSI addresses. Fo

20、r proper orientation, think of the letter “C” (represented by the dashed arrow).,HP XP256- Canister Identification,DKC,L1,L2,R1,R2,HP XP256 HDU Numbering in a B4,B4 in Frame R1 and R2,Drive Slot numbers (top row) vs Disk set installation order (bottom row),DKA and SCSI Buss per HDU (Canister),Array

21、Group- Example,Array Group 5-6,DKU Front,DKU Back,Array Group 2-4,2-4,DKU Front,DKU Back,2-4,2-4,2-4,R1 (DKU-1),DKC,R2 (DKU-2),L2 (DKU-4),L1 (DKU-3),Cable DKC-F310I-24C,Ary Group 51,Ary Group 50,Ary Group 45,Ary Group 46,Ary Group 47,Ary Group 48,Ary Group 49,7th B4,Ary Group 53,Ary Group 54,Ary Gro

22、up 55,Ary Group 56,Ary Group 57,8th B4,Ary Group 52,Ary Group 58,HP XP256 Array Groups,Domain,D1,D2,D3,P,D1,D2,P,D3,RAID-5 3D + 1P Array Groups *,* Shows logical, not physical view,B4 - Array Group 1-1 1-2 1-n,RAID-5 Array Groups,D1,M2,M4,D3,RAID-1 Two 1D + 1M Array Groups*,* RAID1 copy is within the same DKA pair,B4 - Array Group 1-1 1-2,RAID-1 XP256 Arra