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The Question is: We are installing Memory Channel 2nd generation and on an ES40 cluster. We have a problem where the cluster communications is still going through NI and our MCA0 device on the second node shows as /NOAVAILABLE. The PMA0 device is what our cluster comm is going through. All pins and jumpers are set properly, and mc_diag and mc_cable came up clean. How can we get MCA0 device to come back available? The Answer is : Memory Channel devices can appear as unavailable, and not as online or offline -- please check SDA for the device status. (The DCL SHOW DEVICE command does not currently know how to correctly display the memory channel status. SDA does.) Please check with your hardware support organization around the necessary cabling and hub configuration, and the jumper settings for the particular Memory Channel configuration.
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