Fujitsu ETERNUS AF250 S2

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List of Figures

Figure 1 RAID0 Concept..........................................................................................................................................17

Figure 2

RAID1 Concept..........................................................................................................................................17

Figure 3 RAID1+0 Concept......................................................................................................................................18

Figure 4 RAID5 Concept..........................................................................................................................................18

Figure 5 RAID5+0 Concept......................................................................................................................................19

Figure 6 RAID6 Concept..........................................................................................................................................20

Figure 7 RAID6-FR Concept.....................................................................................................................................21

Figure 8 Example of a RAID Group .........................................................................................................................24

Figure 9 Volume Concept .......................................................................................................................................25

Figure 10 Hot Spares................................................................................................................................................27

Figure 11 Data Block Guard......................................................................................................................................29

Figure 12 Disk Drive Patrol.......................................................................................................................................30

Figure 13 Redundant Copy Function ........................................................................................................................31

Figure 14 Rebuild.....................................................................................................................................................32

Figure 15 Fast Recovery ...........................................................................................................................................33

Figure 16 Copyback..................................................................................................................................................34

Figure 17 Copybackless............................................................................................................................................35

Figure 18 Protection (Shield) ...................................................................................................................................36

Figure 19 Deduplication/Compression Overview ......................................................................................................38

Figure 20 Deduplication Overview ...........................................................................................................................39

Figure 21 Compression Overview .............................................................................................................................39

Figure 22 Details of the Deduplication/Compression Function .................................................................................44

Figure 23 Storage Capacity Virtualization.................................................................................................................46

Figure 24 TPV Balancing (When Allocating Disproportionate TPV Physical Capacity Evenly) ....................................49

Figure 25 TPV Balancing (When Distributing Host Accesses Evenly after TPP Expansion) ........................................49

Figure 26 TPV/FTV Capacity Optimization .................................................................................................................51

Figure 27 FTV Configuration.....................................................................................................................................53

Figure 28 FTRP Balancing.........................................................................................................................................56

Figure 29 RAID Migration (When Data Is Migrated to a High Capacity Drive)...........................................................59

Figure 30 RAID Migration (When a Volume Is Moved to a Different RAID Level) ......................................................59

Figure 31 RAID Migration.........................................................................................................................................60

Figure 32 Logical Device Expansion (When Expanding the RAID Group Capacity)....................................................61

Figure 33 Logical Device Expansion (When Changing the RAID Level).....................................................................61

Figure 34 LUN Concatenation ..................................................................................................................................62

Figure 35 LUN Concatenation (When the Concatenation Source Is a New Volume)..................................................63

Figure 36 LUN Concatenation (When the Existing Volume Capacity Is Expanded) ...................................................63

Figure 37 Wide Striping............................................................................................................................................64

Figure 38 Data Encryption with Self Encrypting Drives (SED) ...................................................................................66

Figure 39 Firmware Data Encryption........................................................................................................................67

Figure 40 Key Management Server Linkage.............................................................................................................69

Figure 41 Account Management ..............................................................................................................................71

Figure 42 Audit Log..................................................................................................................................................75

Figure 43 Host Affinity .............................................................................................................................................76

Figure 44 Associating Host Groups, CA Port Groups, and LUN Groups.......................................................................77

Figure 45 Power Consumption Visualization ............................................................................................................78

Figure 46 Event Notification ....................................................................................................................................82

Figure 47 Device Time Synchronization....................................................................................................................84

FUJITSU Storage ETERNUS AF250 S2, ETERNUS AF250 All-Flash Arrays

Design Guide (Basic)

P3AG-1822-09ENZ0