The server ends a table of contents (TOC) creation for the specified node because an I/O error has been encountered by the server in writing to a device.
The TOC creation is ended and server operation continues.
Query the activity log to find messages preceding this one that specify the failing device. Storage pool volumes can be varied offline (by using the VARY command), or the server may need to be halted to correct the hardware problem. After the problem is corrected, try the operation again.