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Dell SRDF Introduction

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R1/R2 device accessibility

Accessibility of an SRDF device to the application host depends on both the host and the array view of the SRDF device state.

Table 1 and Table 2 list application host accessibility for R1 and R2 devices.

Table 1. R1 device accessibilityThe following table displays R1 device accessibility:
Host interface state SRDF R1 state Accessibility
Read/Write Ready Read/Write
Not Ready Depends on R2 device availability
Read Only Ready Read Only
Not Ready Depends on R2 device availability
Not Ready Any Unavailable
Table 2. R2 device accessibilityThe following table displays R2 device accessibility:
Host interface state SRDF R2 state Accessibility
Write Enabled (Read/Write) Ready Read/Write
Not Ready Read/Write
Write Disabled (Read Only) Ready Read Only
Not Ready Read Only
Not Ready Any Unavailable

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