Global data center provider Equinix has increased the size of its public offering announced earlier this week. The company will put $750 million in senior notes on sale, instead of the previously announced $500 million.

Equinix said it may use the proceeds to pay down debt, finance further expansion or for other "general corporate purposes." The company expects to assume a large amount of debt as a result of its acquisition of Switch and Data which, following approval of Switch and Data shareholders, is nearing completion.

The provider expects net proceeds from the offering to be about $736.27 million. Interest on the notes will be payable semi-annually, at a rate of 8.125 percent per year and will mature on Mar. 1, 2018.

According to Equinix's latest earnings report, the company's total revenue for 2009 was $882.5 million. Its net income for the year was $69.4 million.

The $689 million Switch and Data deal, which will add 34 data centers in the US and Canada to Equinix's portfolio, is currently expected to close in the second quarter of 2010, according to the company's CEO Stephen Smith.