Hi,
i have a 7x4 TB RAID6.
I'm just transferring transfer my data from my old HDDs to this RAID via the 8th internal port, so this should not be the issue.
The problem is, that there are some files which are writing with over 150 MB/s and then there are files which are writing only with 12 MB/s (the files have nearly the same big (>5GB) size). Maybe there is a problem with only some of the disks?
Example:
5 to 6 files are at high speed
then 5 to 6 files are at low speed
then 5 to 6 files are at high speed
etc...
I saw that the speed sometimes slows down during the file transfer (maybe they write to the "faulty" drives), so its not really an file issue.
Here is my mdstat:
Personalities : [raid6] [raid5] [raid4]
md127 : active raid6 sde[0] sdg[6] sdf[5] sdc[4] sdd[3] sdb[2] sda[1]
19534435840 blocks super 1.2 level 6, 512k chunk, algorithm 2 [7/7] [UUUUUUU]
unused devices: <none>
Here are my fdisk information (i know that fdisk can't really show the information for 4TB Drives with advanced format):
For me it looks like the sde and the sdf are maybe the problem? Can i pull them out of the RAID and delete the partitions via webgui?
sda:
Disk /dev/sda: 4000.8 GB, 4000787030016 bytes
255 heads, 63 sectors/track, 486401 cylinders, total 7814037168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sda doesn't contain a valid partition table
sdb:
Disk /dev/sdb: 4000.8 GB, 4000787030016 bytes
255 heads, 63 sectors/track, 486401 cylinders, total 7814037168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sdb doesn't contain a valid partition table
sdc:
Disk /dev/sdc: 4000.8 GB, 4000787030016 bytes
255 heads, 63 sectors/track, 486401 cylinders, total 7814037168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sdc doesn't contain a valid partition table
sdd:
Disk /dev/sdd: 4000.8 GB, 4000787030016 bytes
255 heads, 63 sectors/track, 486401 cylinders, total 7814037168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sdd doesn't contain a valid partition table
sde:
WARNING: GPT (GUID Partition Table) detected on '/dev/sde'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sde: 4000.8 GB, 4000787030016 bytes
256 heads, 63 sectors/track, 484501 cylinders, total 7814037168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sde1 1 4294967295 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.
Alles anzeigen
sdf:
WARNING: GPT (GUID Partition Table) detected on '/dev/sdf'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sdf: 4000.8 GB, 4000787030016 bytes
256 heads, 63 sectors/track, 484501 cylinders, total 7814037168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdf1 1 4294967295 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.
Alles anzeigen
sdg:
Disk /dev/sdg: 4000.8 GB, 4000787030016 bytes
255 heads, 63 sectors/track, 486401 cylinders, total 7814037168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sdg doesn't contain a valid partition table
thx for helping