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2024-03-28T19:40:31Z
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Martineau: Created page with '__NOEDITSECTION__ __NOTOC__ Should I use client/server software compression or hardware compression? <table style="width: 100%;" cellspacing="5" style="width: 100%; border: 1px …'
2018-01-29T14:12:13Z
<p>Created page with '__NOEDITSECTION__ __NOTOC__ Should I use client/server software compression or hardware compression? <table style="width: 100%;" cellspacing="5" style="width: 100%; border: 1px …'</p>
<p><b>New page</b></p><div>__NOEDITSECTION__ __NOTOC__<br />
Should I use client/server software compression or hardware compression?<br />
<br />
<table style="width: 100%;" cellspacing="5" style="width: 100%; border: 1px solid gray; padding-left:1em; font-size: 95%" valign="top"><br />
<thead><br />
<tr><br />
<th></th><br />
<th style="border: 1px solid gray;">no compression</th><br />
<th style="border: 1px solid gray;">client software compression</th><br />
<th style="border: 1px solid gray;">server software compression</th><br />
<th style="border: 1px solid gray;">hardware compression</th><br />
</tr><br />
</thead><br />
<tr><br />
<td style="border: 1px solid gray;">cpu usage</td><br />
<td style="border: 1px solid gray;">low</td><br />
<td style="border: 1px solid gray;">high on client</td><br />
<td style="border: 1px solid gray;">high on server</td><br />
<td style="border: 1px solid gray;">low</td><br />
</tr><br />
<tr><br />
<td style="border: 1px solid gray;">network usage between client and server</td><br />
<td style="border: 1px solid gray;"></td><br />
<td style="border: 1px solid gray;">reduced</td><br />
<td style="border: 1px solid gray;"></td><br />
<td style="border: 1px solid gray;"></td><br />
</tr><br />
<tr><br />
<td style="border: 1px solid gray;">holding disk usage</td><br />
<td style="border: 1px solid gray;"></td><br />
<td style="border: 1px solid gray;">reduced</td><br />
<td style="border: 1px solid gray;">reduced</td><br />
<td style="border: 1px solid gray;"></td><br />
<td style="border: 1px solid gray;">reduced = reduced I/O and space</td><br />
</tr><br />
<tr><br />
<td style="border: 1px solid gray;">backup time</td><br />
<td style="border: 1px solid gray;"></td><br />
<td style="border: 1px solid gray;">increased</td><br />
<td style="border: 1px solid gray;">increased</td><br />
<td style="border: 1px solid gray;"></td><br />
<td style="border: 1px solid gray;">increased = because of CPU overhead</td><br />
</tr><br />
<tr><br />
<td style="border: 1px solid gray;">transfer to device</td><br />
<td style="border: 1px solid gray;"></td><br />
<td style="border: 1px solid gray;">reduced</td><br />
<td style="border: 1px solid gray;">reduced</td><br />
<td style="border: 1px solid gray;"></td><br />
<td style="border: 1px solid gray;">reduced = reduced I/O</td><br />
</tr><br />
<tr><br />
<td style="border: 1px solid gray;">device space</td><br />
<td style="border: 1px solid gray;"></td><br />
<td style="border: 1px solid gray;">reduced</td><br />
<td style="border: 1px solid gray;">reduced</td><br />
<td style="border: 1px solid gray;">reduced</td><br />
<td style="border: 1px solid gray;">reduced = use less space</td><br />
</tr><br />
<tr><br />
<td style="border: 1px solid gray;">DAR recovery</td><br />
<td style="border: 1px solid gray;"></td><br />
<td style="border: 1px solid gray;">unavailable</td><br />
<td style="border: 1px solid gray;">Unavailable</td><br />
<td style="border: 1px solid gray;"></td><br />
<td style="border: 1px solid gray;">DAR = Fast restore of a single file in a large backup</td><br />
</tr><br />
</table><br />
<br />
* Disk size have increase faster then cpu speed, so software compression is less effective than many years ago.<br />
* Hardware compression is often better than software compression<br />
* Your choice depend of the resource available</div>
Martineau