Fujitsu ETERNUS DX8700 S3 - Allowed Input for MWC When the Stripe Depth Value Is Tuned

Appendix F Basic Size and MWC Input Condition for RAID Groups
F.2 Input Conditions for MWC
ETERNUS Web GUI User’s Guide (Settings)
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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:
■ 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)