Neil Brown wrote:
On Tuesday September 27, lfarkas@xxxxxxxxx wrote:
hi,
i'd been already asked, but don't get any answer. what is the maximum
size of a raid5 and raid5 partition in kerenel 2.6? i try to find the
answer but found only kernel 2.4 info.
thanks in advance.
Providing you are using either 64bit hardware, or the 'LBD' (large
block device) config, then raid5 arrays can be up to 2^64 -
i.e. enormous - no practical limit.
huu, i don't know. we use 3ware 7506 controller. on it onw homepage it
said:
---------------------------
Supports up to 12 drives with a single PCI card enabling up to 3.6
terabytes of storage (dependent on drive capacity, 2TB per array maximum)
---------------------------
but it's all about the hardware raid5. so it's native hardware raid5
can't be larger than 2TB.
and another quote:
---------------------------
PCI 2.2 compliant 64-bit / 66MHz bus master (2-port controllers are
32-bit / 66MHz PCI compliant)
---------------------------
but it's the pci bus interface not the device.
and as we use in jbod mode there is no info about it. and i read again
the spec but can't find any info about it.
I don't know what you mean by 'raid5 partition'. If you mean like a
regular partition of a device, then the partition can be nearly as bit
as the array....
suppose i create the raid device with:
mdadm --create /dev/md0--level=5 --raid-devices=8 --spare-devices=1
/dev/sd[abcdefgh]1
then what is the maximum size for /dev/md0?
(or more precisely after a mkfs.ext3 /dev/md0).
yours.
--
Levente "Si vis pacem para bellum!"
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