Online note-saving service Evernote on Monday acknowledged that it had suffered a hardware fault at the beginning of July that resulted in potential data loss for more than 6,000 of its users worldwide.The issue was first reported by blog Techwave, citing a report from Japanese newspaper Mainichi Shinbun. In a Monday note to Evernote users on the company's blog, Evernote CEO Phil Libin explained that the loss stemmed from bad server hardware:"Every user's data is stored on a 'shard.' A shard is made up of a server together with a redundant fail-over server. If there is any problem with a server, the system automatically fails over to the second server in the shard. We currently have 37 shards. Shard 22 was the one that had problems last month."

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