Chapter 5 RAID Group Management
5.1 Create RAID Group
ETERNUS Web GUI User’s Guide (Settings)
Copyright 2015 FUJITSU LIMITED
P2X0-1270-13ENZ0
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*1: "DEs under the different CEs" can be found by checking the DE number. DEs under different CEs have different
numbers as the first digit of the DE number.
*2: "SAS cascade" for the ETERNUS DX8700 S3/DX8900 S3 refers to DEs that are attached to one CE port. The DEs that are
allocated to the same SAS cascade configuration are as follows:
•
DE#x0, DE#x1, DE#x2, and DE#x3 that are connected to CE#x Port#0 (x: 0 - B)
•
DE#x4, DE#x5, DE#x6, and DE#x7 that are connected to CE#x Port#1 (x: 0 - B)
•
DE#x8, DE#x9, DE#xA, and DE#xB that are connected to CE#x Port#2 (x: 0 - B)
•
DE#xC, DE#xD, DE#xE, and DE#xF that are connected to CE#x Port#3 (x: 0 - B)
(Example) DE#00, DE#01, DE#02, and DE#03 that are connected to CE#0 Port#0 are on the same SAS cascade.
The maximum number of RAID groups for each model
The maximum number of RAID groups varies depending on each model. The following table shows the
maximum number of RAID groups for each model.
Drive combinations that can configure a RAID group
The following table shows the drive combinations that can configure a RAID group.
OK: RAID groups can be created, Not recommended: RAID groups can be created, but not a recommended configuration,
NG: RAID groups cannot be created
*1: In the controller firmware versions V10L31 and earlier, "SED" indicates "Online SED".
High Reliability (RAID6)
High Reliability (RAID6-FR)
Required
Allocate two or less member drives to the same DE.
Recommended
Distribute member drives to DEs under as many CEs as possible.
Distribute member drives to as many SAS cascades (*2) as possible.
Model
The maximum number of RAID groups
ETERNUS DX60 S3
12
ETERNUS DX100 S3
72
ETERNUS DX200 S3
132
ETERNUS DX500 S3
264
ETERNUS DX600 S3
528
ETERNUS DX8700 S3
768
ETERNUS DX8900 S3
2304
ETERNUS DX200F
12
Online
Nearline
SSD
Online SED
Nearline SED
SSD SED
Online
OK
Not
recommended
NG
NG
NG
NG
Nearline
Not
recommended
OK
NG
NG
NG
NG
SSD
NG
NG
OK
NG
NG
NG
Online SED (*1)
NG
NG
NG
OK
Not
recommended
NG
Nearline SED
NG
NG
NG
Not
recommended
OK
NG
SSD SED
NG
NG
NG
NG
NG
OK
RAID level
Drive layout conditions
Содержание Eternus DX200F
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