RAID Limits
Does anyone know if there are any limits to the volume or size of a RAID array that can be supported by LINUX on a single raid card?
Windows Server 2000 has a limit of 2 TB. You could have a 3Ware card that supports 12 SATA drives, and only would be able to create an array of 2 TB. Thanks! |
Linux also has a 2 Terabyte limit, unless the LBD (large block device) option is compiled into the kernel. The LBD option sets the limit to 2 to the power 63 bytes (which is a very very big number, even compared to 2TB).
You can find out if you are using the LBD option with: Code:
zcat /proc/config.gz | grep LBD Code:
CONFIG_LBD=y Code:
make cloneconfig xconfig Code:
make modules modules_install install && reboot Alternatively, do this but press ‘N’ instead of ‘Y’ to turn the option off and gain a slight speed increase (on a 32-bit system). |
Thanks rjlee -
Glad I asked. |
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