Function Specification List
The ETERNUS DX provides various functions to ensure data integrity, enhance security, reduce cost, and optimize
the overall performance of the system.
The
ETERNUS DX integrates block data (SAN area) and file data (NAS area) in a single device and also provides
advanced functions according to the SAN or NAS connection.
These functions enable users to respond to problems from various situations.
The ETERNUS DX has functions such as the SAN function (supports block data access), the NAS function (supports
file data access), and basic functions that can be used for both SAN and NAS connections.
For more details about basic functions, refer to "2. Basic Functions" (page 33). For more details about the
functions that are used for a SAN connection, refer to "3. SAN Functions" (page 128). For more details about the
functions that are used for a NAS connection, refer to "4. NAS Functions" (page 160).
Table 8 Basic Functions
Overview Function
Supported model
DX60 S5
DX100 S5
DX200 S5
DX500 S5
DX600 S5
DX900 S5
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 48)
"Disk Drive Patrol
" (page 49)
"Redundant Copy" (page 50)
"Rebuild" (page 51)
"Fast Recovery" (page 52)
"Copyback/Copybackless" (page 53)
"Protection (Shield)" (page 55)
¡ ¡ ¡
"Reverse Cabling" (page 57)
¡ ¡ ¡
Resource utilization (virtualization/
Automated Storage Tiering)
Functions that deliver effective resource
utilization.
"Thin Provisioning" (page 58)
¡ ¡ ¡
"Flexible Tier" (page 65)
´
¡ ¡
"Extreme Cache" (page 72)
´ ´
¡
"Extreme Cache Pool" (page 73)
´
¡
´
• 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
Functions that create a volume that
is striped in multiple RAID groups in
order to improve performance.
"RAID Migration" (page 75)
"Logical Device Expansion
" (page 77)
"LUN Concatenation" (page 78)
"Wide Striping" (page 80)
¡ ¡ ¡
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 83
)
"Firmware Data Encryption" (page 84)
"Key Management Server Linkage" (page 85)
´
¡ (*1) ¡
Security measures (user access
management)
Functions to prevent information
leakage that is caused by a malicious
access.
"Account Management" (page 88)
"User Authentication
" (page 90)
"Audit Log" (page 92)
¡ ¡ ¡
1. Overview
Function Specification List
29 Design Guide
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