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MARS-110 - only 866GB available for storage?

Cisco press book Security Monitoring with Cisco Security Mars on page 68 sais that for MARS-110 appliance from total 1500GB, only 866GB is available for storage. Additionally same information can be found (although language is Hungarian, this part is readable :) on http://ciscoexpo.cisco.hu/eloadasok2007/Kadar_MARS_bev_tap_final.pdf

Is this true, and what is explanation why almost only half of total capacity is available for storage?

3 REPLIES
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Re: MARS-110 - only 866GB available for storage?

Hard drive storage for Mars 110 is 1.5TB RAID 10

6 X 500GB SATA-IO 3.0 Gps HDD

7200 RPM, 16MB Buffer

Hot-swappable

Front accessible

For the further description following URL may help you :

http://www.cisco.com/en/US/docs/security/security_management/cs-mars/5.3/installation/guide/over.html

Re: MARS-110 - only 866GB available for storage?

This is because of the space efficiency of RAID-10, have a look at:

http://en.wikipedia.org/wiki/Redundant_array_of_independent_disks#Standard_levels

Regards

Farrukh

Re: MARS-110 - only 866GB available for storage?

Please also note that all space cannot be utilized by events/dynamic data. Have a look at this link:

http://ciscomars.blogspot.com/2006/10/cs-mars-database-info.html

Regards

Farrukh

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