<table border="1" cellpadding="0" cellspacing="0"> <tbody> <tr> <td style="background-color:#ededed; vertical-align:top"> <p><strong>Comparison Items</strong></p> </td> <td style="background-color:#ededed; vertical-align:top"> <p><strong>Ping An Cloud DDS</strong></p> </td> <td style="background-color:#ededed; vertical-align:top"> <p><strong>Self-Built Document Database Service</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>Requires self-guarantee and procurement of devices to build system and RAID setup.</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>Requires self-guarantee and procurement of devices to build system and RAID setup.</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>System security</p> </td> <td style="vertical-align:top"> <p>Repair of database security vulnerabilities in time.</p> </td> <td style="vertical-align:top"> <p>Requires manual deployment as well as procurement of expensive devices and software, and repair of database security vulnerabilities.</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>Database backup</p> </td> <td style="vertical-align:top"> <p>Supports automatic backup and manual backup</p> </td> <td style="vertical-align:top"> <p>You must find backup storage space to back up the database by yourself and periodically check whether 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>Not required. Pay-as-you-go.</p> </td> <td style="vertical-align:top"> <p>Requires large investment in database servers.</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>Maintenance costs</p> </td> <td style="vertical-align:top"> <p>Not required</p> </td> <td style="vertical-align:top"> <p>Full-time Database Administrators (DBAs) are required for maintenance, resulting in high manpower costs.</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>Deployment and scaling</p> </td> <td style="vertical-align:top"> <p>Supports elastic scaling, fast deployment, and on-demand opening.</p> </td> <td style="vertical-align:top"> <p>Requires procuring hardware for expansion, establishing machine room hosting, deploying machines, etc., which has a long duration.</p> </td> </tr> </tbody> </table> <p>&nbsp;</p>