1. Function
The ETERNUS AF provides various functions to ensure data integrity, enhance security, reduce cost, and optimize
the overall performance of the system.
These functions enable to respond to problems from various situations.
Table 1 Function
Overview Function
Data protection
Functions that ensure data integrity to improve data reliability.
It is possible to detect and fix drive failures early.
"Data Block Guard" (page 29)
"Disk Drive Patrol
" (page 30)
"Redundant Copy" (page 31)
"Rebuild" (page 32)
"Fast Recovery" (page 33)
"Copyback/Copybackless" (page 34)
"Protection (Shield)" (page 36)
Operations Optimization (Deduplication/Compression)
A function that eliminates duplicated data and compresses the
data to reduce the amount of written data.
"Deduplication/Compression" (page 38)
Resource utilization (storage virtualization)
Functions that deliver effective resource utilization.
"Thin Provisioning" (page 46)
"Flexible Tier
" (page 52)
•
Data capacity expansion
Functions that expand or relocate a RAID group or a volume
in order to flexibly meet any increases in the amount of data.
•
Guarantee of performance
A function that creates a volume that is striped in multiple
RAID groups in order to improve performance.
"RAID Migration" (page 59)
"Logical Device Expansion
" (page 61)
"LUN Concatenation" (page 62)
"Wide Striping" (page 64)
Security measures (data encryption)
Functions that encrypt data in the drive media to prevent the
data from being fraudulently decoded.
"Encryption with Self Encrypting Drive (SED)" (page 66)
"Firmware Data Encryption" (page 67)
"Key Management Server Linkage" (page 68)
Security measures (user access management)
Functions to prevent information leakage that are caused by a
malicious access.
"Account Management" (page 71)
"User Authentication" (page 73)
"Audit Log" (page 75)
Security measures (unauthorized access prevention)
Functions that prevent unintentional storage access.
"Host Affinity" (page 76)
"iSCSI Security
" (page 78)
Environmental burden reduction
Cooling efficiency can be improved by understanding local tem-
perature increases in the data center by collecting information
on the power consumption of and ambient temperatures in the
storage system.
"Environmental Burden Reduction" (page 78)
Operation management (device monitoring)
Function that reduce load on the system administrator, and
that improve system stability and increase operating ratio of
the system.
"Operation Management Interface" (page 79)
"Performance Information Management
" (page 80)
"Event Notification" (page 82)
"Device Time Synchronization" (page 84)
Power control
Power control functions that are used to link power-on and
power-off operations with servers and perform scheduled opera-
tions.
"Power Synchronized Unit" (page 85)
"Remote Power Operation (Wake On LAN)
" (page 86)
•
High-speed backup
•
Continuous business
Data can be duplicated at any point without affecting other op-
erations.
"Backup" (page 88)
14
FUJITSU Storage ETERNUS AF250 S2, ETERNUS AF250 All-Flash Arrays
Design Guide (Basic)
Copyright 2019 FUJITSU LIMITED
P3AG-1822-09ENZ0
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