Appendix F Basic Size and MWC Input Condition for RAID Groups
F.2 Input Conditions for MWC
ETERNUS Web GUI User’s Guide (Settings)
Copyright 2015 FUJITSU LIMITED
P2X0-1270-13ENZ0
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Allowed input for MWC when using the default Stripe Depth value (TPP)
*1: D: Data drives, M: Mirror drives, P: Parity drives
F.2.2
Allowed Input for MWC When the Stripe Depth Value is Tuned
Refer to the following table for the allowed MWC value when the Stripe Depth value is changed:
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Allowed input for MWC when the Stripe Depth value is tuned (Volume)
RAID level
Drive configuration (*1)
Allowed input for MWC (initial state)
Stripe Depth = 64KB (default)
Striping (RAID0)
4D
1 – 8 (2)
Mirroring (RAID1)
1D+1M
1 – 16 (8)
High Performance (RAID1+0)
2D+2M
1 – 16 (4)
4D+4M
1 – 8 (2)
8D+8M
1 – 4 (1)
12D+12M
1 – 2 (1)
High Capacity (RAID5)
3D+1P
1 – 8 (3)
4D+1P
1 – 8 (2)
7D+1P
1 – 4 (2)
8D+1P
1 – 4 (1)
12D+1P
1 – 2 (1)
High Reliability (RAID6)
4D+2P
1 – 8 (2)
6D+2P
1 – 5 (2)
8D+2P
1 – 4 (1)
High Reliability (RAID6-FR)
(4D+2P)x2+1HS
(4D+2P)x5+1HS
1 – 8 (2)
(6D+2P)x2+1HS
1 – 5 (2)
(8D+2P)x3+1HS
1 – 4 (1)
RAID level
Drive configuration
(*1)
Allowed input for MWC (initial state)
When the Stripe Depth is ...
128KB
256KB
512KB
1024KB
Striping (RAID0)
2D
1 – 8 (4)
1 – 4 (4)
1 – 2 (2)
1 (fixed)
3D
1 – 5 (3)
1 – 2 (2)
1 (fixed)
1 (fixed)
4D
1 – 4 (2)
1 – 2 (2)
1 (fixed)
1 (fixed)
5D
1 – 3 (2)
1 (fixed)
1 (fixed)
1 (fixed)
6D
1 – 2 (2)
1 (fixed)
1 (fixed)
1 (fixed)
7D
1 – 2 (2)
1 (fixed)
1 (fixed)
1 (fixed)
8D
1 – 2 (1)
1 (fixed)
1 (fixed)
1 (fixed)
9D – 16D
1 (fixed)
1 (fixed)
1 (fixed)
1 (fixed)
Summary of Contents for Eternus DX200F
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