Fujitsu ETERNUS DX60 S3 User Manual page 529

Chapter 5 RAID Group Management
5.1 Create RAID Group
RAID level
High Reliability (RAID6)
High Reliability (RAID6-FR)
*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.
ETERNUS DX60 S3
ETERNUS DX100 S3
ETERNUS DX200 S3
ETERNUS DX500 S3
ETERNUS DX600 S3
ETERNUS DX8700 S3
ETERNUS DX8900 S3
ETERNUS DX200F
Drive combinations that can configure a RAID group
The following table shows the drive combinations that can configure a RAID group.
Online
Nearline
SSD
Online SED (*1)
Nearline SED
SSD SED
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".
Required
Recommended
Model The maximum number of RAID groups
Online Nearline
OK Not
recommended
Not OK
recommended
NG NG
NG NG
NG NG
NG NG
ETERNUS Web GUI User's Guide (Settings)
Copyright 2015 FUJITSU LIMITED
Drive layout conditions
Allocate two or less member drives to the same DE.
Distribute member drives to DEs under as many CEs as possible.
Distribute member drives to as many SAS cascades (*2) as possible.
12
72
132
264
528
768
2304
12
SSD Online SED
NG NG
NG NG
OK NG
NG OK
NG
Not
recommended
NG NG
529
Nearline SED SSD SED
NG NG
NG NG
NG NG
NG
Not
recommended
OK NG
NG OK
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