Fujitsu Eternus DX500 S3 - Page 529

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 NGNGOKNGNGNG
Online SED (*1)
NG NG NG OK
Not
recommended
NG
Nearline SED
NG NG NG
Not
recommended
OK NG
SSD SEDNGNGNGNGNGOK
RAID level Drive layout conditions