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Lu, Huayi
7505fe85a9
Reviewed-by: Kacur, Michal <michal.kacur@t-systems.com> Co-authored-by: Lu, Huayi <luhuayi@huawei.com> Co-committed-by: Lu, Huayi <luhuayi@huawei.com>
52 lines
4.6 KiB
HTML
52 lines
4.6 KiB
HTML
<a name="EN-US_TOPIC_0000001384775385"></a><a name="EN-US_TOPIC_0000001384775385"></a>
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<h1 class="topictitle1">What Are the Differences Between Hot Data Storage and Cold Data Storage?</h1>
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<div id="body0000001384775385"><p id="EN-US_TOPIC_0000001384775385__p16504162917522">The biggest difference between hot data storage and cold data storage lies in the storage media.</p>
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<ul id="EN-US_TOPIC_0000001384775385__ul1651442917522"><li id="EN-US_TOPIC_0000001384775385__li19513122995220">Hot data is frequently queried or updated and has high requirements on access response time. It is stored on <strong id="EN-US_TOPIC_0000001384775385__b1449193193812">DN data disks</strong>.</li><li id="EN-US_TOPIC_0000001384775385__li9513112913526">Cold data is not updated and is occasionally queried, and does not have high requirements on access response time. It is stored in <strong id="EN-US_TOPIC_0000001384775385__b15491815531">OBS</strong>.</li></ul>
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<p id="EN-US_TOPIC_0000001384775385__p19943133185311">Different storage media determine the cost, performance, and application scenarios of the two storage mode, as shown in <a href="#EN-US_TOPIC_0000001384775385__table550418217359">Table 1</a>.</p>
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<div class="tablenoborder"><a name="EN-US_TOPIC_0000001384775385__table550418217359"></a><a name="table550418217359"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000001384775385__table550418217359" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Differences between hot and cold data storage</caption><thead align="left"><tr id="EN-US_TOPIC_0000001384775385__row3505122163514"><th align="left" class="cellrowborder" valign="top" width="15.61%" id="mcps1.3.4.2.6.1.1"><p id="EN-US_TOPIC_0000001384775385__p1050611219355">Storage</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="14.13%" id="mcps1.3.4.2.6.1.2"><p id="EN-US_TOPIC_0000001384775385__p1450617216356">Read and Write</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="15.770000000000001%" id="mcps1.3.4.2.6.1.3"><p id="EN-US_TOPIC_0000001384775385__p7619163264619">Cost</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="18.740000000000002%" id="mcps1.3.4.2.6.1.4"><p id="EN-US_TOPIC_0000001384775385__p3598193717465">Capacity</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="35.75%" id="mcps1.3.4.2.6.1.5"><p id="EN-US_TOPIC_0000001384775385__p12365184944612"><strong id="EN-US_TOPIC_0000001384775385__b204429318434">Application Scenario</strong></p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="EN-US_TOPIC_0000001384775385__row1750642120358"><td class="cellrowborder" valign="top" width="15.61%" headers="mcps1.3.4.2.6.1.1 "><p id="EN-US_TOPIC_0000001384775385__p1506132112350">Hot storage</p>
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</td>
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<td class="cellrowborder" valign="top" width="14.13%" headers="mcps1.3.4.2.6.1.2 "><p id="EN-US_TOPIC_0000001384775385__p1450672163510">Fast</p>
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</td>
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<td class="cellrowborder" valign="top" width="15.770000000000001%" headers="mcps1.3.4.2.6.1.3 "><p id="EN-US_TOPIC_0000001384775385__p935683018475">High</p>
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</td>
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<td class="cellrowborder" valign="top" width="18.740000000000002%" headers="mcps1.3.4.2.6.1.4 "><p id="EN-US_TOPIC_0000001384775385__p165989374465">Fixed and restricted</p>
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</td>
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<td class="cellrowborder" valign="top" width="35.75%" headers="mcps1.3.4.2.6.1.5 "><p id="EN-US_TOPIC_0000001384775385__p3507182123520">This mode is applicable to scenarios where the data volume is limited and needs to be frequently read and updated.</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001384775385__row125061621163516"><td class="cellrowborder" valign="top" width="15.61%" headers="mcps1.3.4.2.6.1.1 "><p id="EN-US_TOPIC_0000001384775385__p75066214356">Cold storage</p>
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</td>
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<td class="cellrowborder" valign="top" width="14.13%" headers="mcps1.3.4.2.6.1.2 "><p id="EN-US_TOPIC_0000001384775385__p20506421193511">Slow</p>
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</td>
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<td class="cellrowborder" valign="top" width="15.770000000000001%" headers="mcps1.3.4.2.6.1.3 "><p id="EN-US_TOPIC_0000001384775385__p25061921193519">Low</p>
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</td>
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<td class="cellrowborder" valign="top" width="18.740000000000002%" headers="mcps1.3.4.2.6.1.4 "><p id="EN-US_TOPIC_0000001384775385__p20598937164613">Large and unlimited</p>
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</td>
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<td class="cellrowborder" valign="top" width="35.75%" headers="mcps1.3.4.2.6.1.5 "><p id="EN-US_TOPIC_0000001384775385__p850712213356">This mode is applicable to scenarios such as data archiving. It features low cost and large capacity.</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_03_0029.html">Cluster Management</a></div>
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</div>
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</div>
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