<p>The table below compares functions of BMS with those of the ECS. You can choose the server that suits your need best based on these indexes.</p> <table border="1" cellpadding="0" cellspacing="0"> <tbody> <tr> <td colspan="2" style="background-color:#ededed; vertical-align:top"> <p><strong>Index</strong></p> </td> <td style="background-color:#ededed; vertical-align:top"> <p><strong>BMS</strong></p> </td> <td style="background-color:#ededed; vertical-align:top"> <p><strong>ECS</strong></p> </td> </tr> <tr> <td colspan="2" style="vertical-align:top"> <p>Use cases</p> </td> <td style="vertical-align:top"> <ul> <li>Collection, storage, analysis, search and mining large amount of data</li> <li>High IO and high CPU performance</li> <li>Image processing</li> </ul> </td> <td style="vertical-align:top"> <ul> <li>Back-end servers of enterprises&rsquo; applications</li> <li>Large and medium-sized system clusters; large, medium-sized and small databases</li> <li>Heavy computing load</li> </ul> </td> </tr> <tr> <td colspan="2" style="vertical-align:top"> <p>Delivery time</p> </td> <td style="vertical-align:top"> <p>At least 30 minutes</p> </td> <td style="vertical-align:top"> <p>Within 1-2 minutes</p> </td> </tr> <tr> <td colspan="2" style="vertical-align:top"> <p>Physical resources</p> </td> <td style="vertical-align:top"> <p>Exclusive access by one tenant</p> </td> <td style="vertical-align:top"> <p>Shared by many tenants</p> </td> </tr> <tr> <td rowspan="3" style="vertical-align:top"> <p>Computing</p> </td> <td style="vertical-align:top"> <p>No loss of performance</p> </td> <td style="vertical-align:top"> <p>Yes</p> </td> <td style="vertical-align:top"> <p>No</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>No loss of features</p> </td> <td style="vertical-align:top"> <p>Yes</p> </td> <td style="vertical-align:top"> <p>No</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>No competition for resources</p> </td> <td style="vertical-align:top"> <p>Yes</p> </td> <td style="vertical-align:top"> <p>No</p> </td> </tr> <tr> <td rowspan="7" style="vertical-align:top"> <p>Storage</p> </td> <td style="vertical-align:top"> <p>Perfect compatibility with EBS</p> </td> <td style="vertical-align:top"> <p>No</p> </td> <td style="vertical-align:top"> <p>Yes</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>Using EBS (system disk) to launch</p> </td> <td style="vertical-align:top"> <p>No</p> </td> <td style="vertical-align:top"> <p>Yes</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>Rapid reset by system disk</p> </td> <td style="vertical-align:top"> <p>No</p> </td> <td style="vertical-align:top"> <p>Yes</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>Using ECS image</p> </td> <td style="vertical-align:top"> <p>No</p> </td> <td style="vertical-align:top"> <p>Yes</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>Mutual cold migration between the physical server and the virtual machine</p> </td> <td style="vertical-align:top"> <p>No</p> </td> <td style="vertical-align:top"> <p>Yes</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>No need of installation of operating systems</p> </td> <td style="vertical-align:top"> <p>Yes</p> </td> <td style="vertical-align:top"> <p>Yes</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>No need of local RAID, enhancing security of data in cloud disks</p> </td> <td style="vertical-align:top"> <p>No</p> </td> <td style="vertical-align:top"> <p>Yes</p> </td> </tr> <tr> <td rowspan="2" style="vertical-align:top"> <p>Network</p> </td> <td style="vertical-align:top"> <p>Perfect compatibility with EBS VPC network</p> </td> <td style="vertical-align:top"> <p>No</p> </td> <td style="vertical-align:top"> <p>Yes</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>No communication limits among physical server clusters and virtual machine clusters</p> </td> <td style="vertical-align:top"> <p>Yes</p> </td> <td style="vertical-align:top"> <p>Yes</p> </td> </tr> <tr> <td rowspan="2" style="vertical-align:top"> <p>Control</p> </td> <td style="vertical-align:top"> <p>Perfect compatibility with present EBS control systems</p> </td> <td style="vertical-align:top"> <p>No</p> </td> <td style="vertical-align:top"> <p>Yes</p> </td> </tr> <tr> <td style="vertical-align:top"> <p>User experience of VNC and others being consistent with that of virtual machines</p> </td> <td style="vertical-align:top"> <p>No</p> </td> <td style="vertical-align:top"> <p>Yes</p> </td> </tr> </tbody> </table>