Theory of Operation
2–17
2.3.2 SF7x Operating Modes
SF7x series storage enclosures can operate in either through-bus or
split-bus mode. These modes are described in the following sections.
2.3.2.1 Through-Bus Mode
In through-bus mode, all four drive positions (if occupied or not) are
connected to one DSSI bus. The drive positions are physically connected
(facing the front of the enclosure):
• Left-rear position (DSSI ID = 1)
• To left-front position (DSSI ID = 2)
• To right-front position (DSSI ID = 3)
• To right-rear position (DSSI ID = 4)
2.3.2.2 Split-Bus Mode
In split-bus mode, the two ISEs on the right side of the enclosure are
connected to one DSSI bus while the two ISEs on the left side of the
enclosure are connected to another DSSI bus. The drive positions are
physically connected (facing the front of the enclosure):
• Left-rear position (DSSI ID = 5 or 1, for single-system or stripe set)
• To left-front position (DSSI ID = 6 or 2, for single-system or stripe set)
• Right-front position (DSSI ID = 6 or 2, for single-system or stripe set)
• To right-rear position (DSSI ID = 5 or 1, for single-system or stripe
set)
Содержание EK-SFXXS-SG-003
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