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Reviewed-by: Muller, Martin <martin.muller@t-systems.com> Co-authored-by: zhangyue <zhangyue164@huawei.com> Co-committed-by: zhangyue <zhangyue164@huawei.com>
119 lines
9.8 KiB
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119 lines
9.8 KiB
HTML
<a name="sfs_01_0069"></a><a name="sfs_01_0069"></a>
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<h1 class="topictitle1">What Are the Differences Between SFS, OBS, and EVS?</h1>
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<div id="body1578735402056"><p id="sfs_01_0069__p184565391324"><a href="#sfs_01_0069__table48623532053">Table 1</a> shows the comparison between SFS, OBS, and EVS.</p>
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<div class="tablenoborder"><a name="sfs_01_0069__table48623532053"></a><a name="table48623532053"></a><table cellpadding="4" cellspacing="0" summary="" id="sfs_01_0069__table48623532053" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Comparison between SFS, OBS, and EVS</caption><thead align="left"><tr id="sfs_01_0069__row89921531951"><th align="left" class="cellrowborder" valign="top" width="15.261526152615263%" id="mcps1.3.2.2.5.1.1"><p id="sfs_01_0069__p69927531955">Dimension</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="26.772677267726774%" id="mcps1.3.2.2.5.1.2"><p id="sfs_01_0069__p49928531855">SFS</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="27.852785278527854%" id="mcps1.3.2.2.5.1.3"><p id="sfs_01_0069__p1699235318518">OBS</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="30.11301130113011%" id="mcps1.3.2.2.5.1.4"><p id="sfs_01_0069__p499285310520">EVS</p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="sfs_01_0069__row1199215313511"><td class="cellrowborder" valign="top" width="15.261526152615263%" headers="mcps1.3.2.2.5.1.1 "><p id="sfs_01_0069__p209925534513">Concept</p>
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</td>
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<td class="cellrowborder" valign="top" width="26.772677267726774%" headers="mcps1.3.2.2.5.1.2 "><p id="sfs_01_0069__p1499312531458">SFS provides on-demand high-performance file storage, which can be shared by multiple ECSs. SFS is similar to a remote directory for Windows or Linux OSs.</p>
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</td>
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<td class="cellrowborder" valign="top" width="27.852785278527854%" headers="mcps1.3.2.2.5.1.3 "><p id="sfs_01_0069__p59931531054">OBS provides massive, secure, reliable, and cost-effective data storage for users to store data of any type and size.</p>
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</td>
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<td class="cellrowborder" valign="top" width="30.11301130113011%" headers="mcps1.3.2.2.5.1.4 "><p id="sfs_01_0069__p89931253355">EVS provides scalable block storage that features high reliability and high performance to meet various service requirements. An EVS disk is similar to a hard disk on a PC.</p>
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</td>
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</tr>
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<tr id="sfs_01_0069__row199315531651"><td class="cellrowborder" valign="top" width="15.261526152615263%" headers="mcps1.3.2.2.5.1.1 "><p id="sfs_01_0069__p129931453557">Data storage logic</p>
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</td>
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<td class="cellrowborder" valign="top" width="26.772677267726774%" headers="mcps1.3.2.2.5.1.2 "><p id="sfs_01_0069__p699318531157">Stores files. Data is sorted and displayed in files and folders.</p>
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</td>
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<td class="cellrowborder" valign="top" width="27.852785278527854%" headers="mcps1.3.2.2.5.1.3 "><p id="sfs_01_0069__p29936539510">Stores objects. Files can be stored directly to OBS. The files automatically generate corresponding system metadata. You can also customize the metadata if needed.</p>
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</td>
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<td class="cellrowborder" valign="top" width="30.11301130113011%" headers="mcps1.3.2.2.5.1.4 "><p id="sfs_01_0069__p1199318533513">Stores binary data and cannot directly store files. To store files, you need to format the file system first.</p>
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</td>
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</tr>
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<tr id="sfs_01_0069__row499310531512"><td class="cellrowborder" valign="top" width="15.261526152615263%" headers="mcps1.3.2.2.5.1.1 "><p id="sfs_01_0069__p1599310531758">Access method</p>
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</td>
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<td class="cellrowborder" valign="top" width="26.772677267726774%" headers="mcps1.3.2.2.5.1.2 "><p id="sfs_01_0069__p11993125312515">SFS file systems can be accessed only after being mounted to ECSs or BMSs through NFS. A network address must be specified or mapped to a local directory for access.</p>
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</td>
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<td class="cellrowborder" valign="top" width="27.852785278527854%" headers="mcps1.3.2.2.5.1.3 "><p id="sfs_01_0069__p29939535511">OBS buckets can be accessed through the Internet or Direct Connect. The bucket address must be specified for access, and transmission protocols HTTP and HTTPS are used.</p>
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</td>
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<td class="cellrowborder" valign="top" width="30.11301130113011%" headers="mcps1.3.2.2.5.1.4 "><p id="sfs_01_0069__p799316533517">EVS disks can be used and accessed from applications only after being attached to ECSs or BMSs and initialized.</p>
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</td>
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</tr>
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<tr id="sfs_01_0069__row1993553258"><td class="cellrowborder" valign="top" width="15.261526152615263%" headers="mcps1.3.2.2.5.1.1 "><p id="sfs_01_0069__p1199313532518">Application Scenario</p>
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</td>
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<td class="cellrowborder" valign="top" width="26.772677267726774%" headers="mcps1.3.2.2.5.1.2 "><p id="sfs_01_0069__p109937538511">Gene sequencing, image rendering, media processing, file sharing, content management, and web services</p>
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</td>
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<td class="cellrowborder" valign="top" width="27.852785278527854%" headers="mcps1.3.2.2.5.1.3 "><p id="sfs_01_0069__p15993953458">Big data analysis, static website hosting, online video on demand (VoD), gene sequencing, and intelligent video surveillance</p>
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</td>
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<td class="cellrowborder" valign="top" width="30.11301130113011%" headers="mcps1.3.2.2.5.1.4 "><p id="sfs_01_0069__p119939530520">Industrial design, energy exploration, critical clustered applications, enterprise application systems, and development and testing</p>
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</td>
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</tr>
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<tr id="sfs_01_0069__row126351235635"><td class="cellrowborder" valign="top" width="15.261526152615263%" headers="mcps1.3.2.2.5.1.1 "><p id="sfs_01_0069__p18821472413">Latency</p>
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</td>
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<td class="cellrowborder" valign="top" width="26.772677267726774%" headers="mcps1.3.2.2.5.1.2 "><div class="p" id="sfs_01_0069__p1821611180126">SFS Capacity-Oriented file system:<ul id="sfs_01_0069__ul51457701816"><li id="sfs_01_0069__li1977912332215">For sequential large I/Os of large files, the latency ranges from 20 ms to 50 ms.</li><li id="sfs_01_0069__li13779523162212">For sequential small I/Os of large files, the latency ranges from 10 ms to 20 ms.</li><li id="sfs_01_0069__li914577131817">For random small I/Os of large files, the latency ranges from 200 ms to 500 ms.</li></ul>
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</div>
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<p id="sfs_01_0069__p12490205111517">General purpose file system: 10 ms</p>
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<p id="sfs_01_0069__p1658841177">SFS Turbo file system: 1 ms to 5 ms</p>
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</td>
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<td class="cellrowborder" valign="top" width="27.852785278527854%" headers="mcps1.3.2.2.5.1.3 "><p id="sfs_01_0069__p1430023101212">10 ms</p>
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</td>
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<td class="cellrowborder" valign="top" width="30.11301130113011%" headers="mcps1.3.2.2.5.1.4 "><p id="sfs_01_0069__p256342710121">1 ms to 15 ms</p>
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</td>
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</tr>
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<tr id="sfs_01_0069__row16236340633"><td class="cellrowborder" valign="top" width="15.261526152615263%" headers="mcps1.3.2.2.5.1.1 "><p id="sfs_01_0069__p48211718411">Bandwidth</p>
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</td>
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<td class="cellrowborder" valign="top" width="26.772677267726774%" headers="mcps1.3.2.2.5.1.2 "><p id="sfs_01_0069__p16216141811120">GB/s</p>
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</td>
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<td class="cellrowborder" valign="top" width="27.852785278527854%" headers="mcps1.3.2.2.5.1.3 "><p id="sfs_01_0069__p1330202351220">TB/s</p>
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</td>
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<td class="cellrowborder" valign="top" width="30.11301130113011%" headers="mcps1.3.2.2.5.1.4 "><p id="sfs_01_0069__p1563827191215">MB/s</p>
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</td>
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</tr>
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<tr id="sfs_01_0069__row516755993"><td class="cellrowborder" valign="top" width="15.261526152615263%" headers="mcps1.3.2.2.5.1.1 "><p id="sfs_01_0069__p191613553914">Data sharing</p>
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<td class="cellrowborder" valign="top" width="26.772677267726774%" headers="mcps1.3.2.2.5.1.2 "><p id="sfs_01_0069__p142161918151215">Supported</p>
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</td>
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<td class="cellrowborder" valign="top" width="27.852785278527854%" headers="mcps1.3.2.2.5.1.3 "><p id="sfs_01_0069__p8301523101217">Supported</p>
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</td>
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<td class="cellrowborder" valign="top" width="30.11301130113011%" headers="mcps1.3.2.2.5.1.4 "><p id="sfs_01_0069__p556382791216">Not supported</p>
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</td>
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</tr>
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<tr id="sfs_01_0069__row12101142536"><td class="cellrowborder" valign="top" width="15.261526152615263%" headers="mcps1.3.2.2.5.1.1 "><p id="sfs_01_0069__p5821878416">Remote access</p>
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<td class="cellrowborder" valign="top" width="26.772677267726774%" headers="mcps1.3.2.2.5.1.2 "><p id="sfs_01_0069__p13216181801211">Supported</p>
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<td class="cellrowborder" valign="top" width="27.852785278527854%" headers="mcps1.3.2.2.5.1.3 "><p id="sfs_01_0069__p13092301216">Supported</p>
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<td class="cellrowborder" valign="top" width="30.11301130113011%" headers="mcps1.3.2.2.5.1.4 "><p id="sfs_01_0069__p1756412274123">Not supported</p>
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</td>
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</tr>
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<tr id="sfs_01_0069__row525134415319"><td class="cellrowborder" valign="top" width="15.261526152615263%" headers="mcps1.3.2.2.5.1.1 "><p id="sfs_01_0069__p1482117718416">Online editing</p>
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<td class="cellrowborder" valign="top" width="26.772677267726774%" headers="mcps1.3.2.2.5.1.2 "><p id="sfs_01_0069__p621661841215">Supported</p>
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<td class="cellrowborder" valign="top" width="27.852785278527854%" headers="mcps1.3.2.2.5.1.3 "><p id="sfs_01_0069__p130192315124">Not supported</p>
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<td class="cellrowborder" valign="top" width="30.11301130113011%" headers="mcps1.3.2.2.5.1.4 "><p id="sfs_01_0069__p10564132715124">Supported</p>
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</td>
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</tr>
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<tr id="sfs_01_0069__row939510461638"><td class="cellrowborder" valign="top" width="15.261526152615263%" headers="mcps1.3.2.2.5.1.1 "><p id="sfs_01_0069__p08218716417">Used independently</p>
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<td class="cellrowborder" valign="top" width="26.772677267726774%" headers="mcps1.3.2.2.5.1.2 "><p id="sfs_01_0069__p19216101881218">Supported</p>
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<td class="cellrowborder" valign="top" width="27.852785278527854%" headers="mcps1.3.2.2.5.1.3 "><p id="sfs_01_0069__p193072371218">Supported</p>
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<td class="cellrowborder" valign="top" width="30.11301130113011%" headers="mcps1.3.2.2.5.1.4 "><p id="sfs_01_0069__p356442720121">Not supported</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="sfs_01_0066.html">Concepts</a></div>
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</div>
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</div>
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