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April 6th, 2010 05:00
Avamar Gen3: 3.3TB node internal disk layout - RAID 1 or RAID 5 ?
Hello Avamar people,
From the site preparation document Gen3 nodes, it comes with 2TB nodes, and 3.3TB nodes.
I actually physcially inspected the 2TB nodes, it comes with 6 x 1TB internal drives, assuming using RAID1, so make it 3TB effective, and 2TB for data, 1TB for check point;
Now the question is how it lays out as 3.3TB nodes, is it just same machine with 6 x 1TB disks, with RAID 5 layout, end up with 5TB effecitve, and 3.3TB for data, 1.6TB for check point? OR, 3.3TB is really has some larger internal disks (e.g. 6 x 1.6TB disks ) with RAID 1 ?
Best regards,
Liang
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Avamar Exorcist
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April 14th, 2010 11:00
Currently the only disks we use are 300GB 15K RPM disks and 1TB 7.2K RPM disks.
In the 3.3TB nodes we have six 1TB 7.2K RPM disks in a RAID 5 layout.
If you do the maths that's 6TB minus 1TB (equiv to 1 disk) for RAID giving a total capacity of 5TB which includes the 3.3TB available to store deduplicated backup data