Hitachi F1500 - Details for SOM 803; Details for SOM 855; Details for SOM 897, SOM 898, and SOM 901

Table 39 SOM 784 operational specifications
MCU and RCU Operational specification
Model Microprogram version SOM 784 setting Pair creation, resync
RI/O MIH time
reduction
VSP G1000, VSP
G1500, and VSP
F1500
All supported versions OFF Normal end Disabled
VSP G1000, VSP
G1500, and VSP
F1500
All supported versions ON Normal end Enabled
Details for SOM 803
Table 40 SOM 803 behavior
SOM 803
Protect V-VOLs when I/O fails to Blocked Pool VOL Behavior
OFF Disabled DRU Protect attribute is not set
OFF Enabled DRU Protect attribute is set
ON Disabled DRU Protect attribute is not set
ON Enabled DRU Protect attribute is set
Details for SOM 855
Table 41 SOM 855 behavior with SOM 467
SOM 467
SOM 855
WP
To 57% 58% to 60% 61% to 63% 64% to 75% Over 76%
ON ON Normal copy Copy after destaging Copy stops
OFF Normal copy Copy stops
OFF ON/OFF Normal copy Copy stops
Details for SOM 897, SOM 898, and SOM 901
Table 42 Relations among SOM897, SOM898, and SOM901
SOM 901
Type of Tier1 Tier1 and Tier2 gray zone Tier2 and Tier3 gray zone
ON SSD SOM 901 Combination of SOM 897 &SOM 898
Not SSD Combination of SOM 897 & SOM 898
OFF SSD Combination of SOM897 & SOM898
180 System option modes
Hitachi Virtual Storage Platform G1000, G1500, and Virtual Storage Platform F1500 Hardware Guide