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<p class=MsoNormal><span lang=EN-US style='font-size:14.0pt'>Dear All:<o:p></o:p></span></p>
<p class=MsoNormal align=left style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;margin-left:36.0pt;text-align:left'><span lang=EN-US style='font-size:
15.0pt'> I have a question. When I have a large cluster, maybe more than 10PB
data, if a file have 3 copies and each disk have 1TB capacity, So we need about
30,000 disks. All disks are very cheap and are easily damaged. We must repair
a 1TB disk in 30 mins</span><span style='font-size:15.0pt;font-family:宋体'>。</span><span
lang=EN-US style='font-size:15.0pt'>As far as I know</span><span
style='font-size:15.0pt;font-family:宋体'>，</span><span lang=EN-US
style='font-size:15.0pt'>in gluster architecture</span><span style='font-size:
15.0pt;font-family:宋体'>，</span><span lang=EN-US style='font-size:15.0pt'>all
data in the damaged disk will be repaired to the new disk which is used to replace
the damaged disk. As a result of the writing speed of disk, when we repair 1TB
disk in gluster, we need more than 5 hours. Can we do it in 30 mins?</span><span
lang=EN-US style='font-size:11.5pt;font-family:"Arial","sans-serif";color:#333333'><o:p></o:p></span></p>
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