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February 18th, 2015 10:00
CX3-20f - 8GB file size limit ?
We have sucessfully configured Windows 2012 R2 cluster connected to CX3-20.
Now we're trying to copy vhdx files previously configured virtual machines. VHDX files have at least 16 GB of size. When copying - everything stops at about 8GB.
Is there any limit of file size in CX3-20 matrix ?
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dynamox
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February 18th, 2015 13:00
no such limit on CX, block LUNs can be in hundreds of terabytes (usign MetaLUNs).
brettesinclair
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715 Posts
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February 18th, 2015 16:00
Agree with Dynamox, this is not an array limitation.
Do you get an "unable to allocate resources error" (or similar when it fails)
Try using xcopy /J (to avoid bufferred io) which will be slower or use eseutil, or bu and restore the files.
toymanek
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February 18th, 2015 21:00
Thanks. XCOPY /J command worked perfectly.
dynamox
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February 19th, 2015 05:00
how about you mark Brett's reply as correct, will help other folks with the same issue.
DELL-Sheron G
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February 19th, 2015 10:00
Any idea why this is happening, I remember facing this issue a very long time back with USB pen drives, when FAT32 had a limit of 4gb. Is it something like this? A bit curious.
Regards,
Sheron
brettesinclair
2 Intern
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715 Posts
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February 20th, 2015 00:00
Sheron, it used to be a lot more prevalent before 64bit OS became more common.
It's caused by the fs driver buffering disk reads and writes into the fs cache, to try and speed up subsequent access.
Problem is as it does this it depletes available memory and paged pool memory until it's exhausted and fails.
Granted though, haven't seen it a lot since 2008R2 though, so in this maybe caused by insufficient ram.
kelleg
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February 20th, 2015 12:00
Was your question answered correctly? If so, please remember to mark your question Answered when you get the correct answer and award points to the person providing the answer.
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glen