<table border="1" cellpadding="0" cellspacing="0"> <tbody> <tr> <td style="background-color:#ededed; vertical-align:top"> <p><strong>Comparison item</strong></p> </td> <td style="background-color:#ededed; vertical-align:top"> <p><strong>Ping An Cloud RDS service</strong></p> </td> <td style="background-color:#ededed; vertical-align:top"> <p><strong>Self-Built RDS</strong></p> </td> </tr> <tr> <td style="vertical-align:top"> <p>Service availability</p> </td> <td style="vertical-align:top"> <p>99.967%</p> </td> <td style="vertical-align:top"> <p>You need to purchase devices to build system such as building RAID by yourself.</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>Data reliability</p> </td> <td style="vertical-align:top"> <p>99.9999%</p> </td> <td style="vertical-align:top"> <p>You need to purchase devices to build system such as building RAID by yourself.</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>System security</p> </td> <td style="vertical-align:top"> <p>Timely fix security vulnerabilities of databases.</p> </td> <td style="vertical-align:top"> <p>You need to fix database security vulnerabilities by yourself. The cost is expensive.</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>Database backup</p> </td> <td style="vertical-align:top"> <p>Support automatic backup and manual backup.</p> </td> <td style="vertical-align:top"> <p>You need to create storage space for data backup and regularly verify that backup data can be restored.</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>Software and hardware investment</p> </td> <td style="vertical-align:top"> <p>No software and hardware investment. The service is paid as you use.</p> </td> <td style="vertical-align:top"> <p>The cost for the database server is high.</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>Maintenance cost</p> </td> <td style="vertical-align:top"> <p>No maintenance cost.</p> </td> <td style="vertical-align:top"> <p>You need to employ full-time database administrator for maintenance. The labor cost is high.</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>Deployment and expansion</p> </td> <td style="vertical-align:top"> <p>Elastic expansion and quick deployment. The service is opened in real time.</p> </td> <td style="vertical-align:top"> <p>You need to purchase hardware for expansion, build server room, and deploy machines, which takes a long time.</p> </td> </tr> </tbody> </table>