Hello guys.
I'm having some weird problems with my server's data transfer rate and need your help.
When ever I copying a large file (30GB) from one Seagate SSD to the other Seagate , it starts at full speed from about 400 -450MB/s and then suddenly drops off to around 150-250 MB/s after some written gigabytes, sometimes the speed increases again after while.
My setup:
Supermicro X10SDV-TLN4F Xeon-D 1541 8Core / 16Thread
2x Samsung DIMM 32GB, DDR4-2400, CL17-17-17, reg ECC M393A4K40BB1
Dell Perc H310 flashed with LSI IT firmware version 20.00.07.00 now displays LSI 9211-8i, but in ESXi and Windows it is recognized as DELL SAS 6GB
1xSamsung 840 Basic, 250GB connected to one SATA port of the board
2xSeagate Nytro XF1230 1920GB connected to the H310
ESXi 6.5.0 Update 1 (Build 7388607) is installed on the Samsung SSD.
The unused space on the Samsung SSD is used for VMFS6 DataStore1.
The VM Windows Server 2016 is located on this DataStore.
VMFS6 DataStore2: First Seagate Nytro XF1230 (thick lazy zeroed), Windows E:
VMFS6 DataStore3: Second Seagate Nytro XF1230 (thick lazy zeroed), Windows F:
First some CDM Bench Screens:
Copying the 30GB File from the Samsung to the first Seagate....
.... and to the second Seagate
No problem so far.
But when ever I copying the FIle from one Seagate SSD to the other....
What I've done / tried so far:
-RDM
no improvement
-eger zeroed provisioning
no improvement
-eger zerod + paravision
no improvment
-H310 passthrough
same, 10 minutes later.... strange....
-H310 P19 Firmware
no improvement
-LSI 9361-8i JBOD
no improvement
-different amount of RAM
strange
4G:
16G:
- other combination
First Seagate connected to the H310 with activated Passthrough
Second Seagate connected to one of the Board Sata Ports, eger zeroed + paravirtual
Different RAM Settings:
4GB:
8GB:
10GB:
12GB:
16GB:
The Drop is not always avail able, sometimes constant speed at about 300MB/s.
The Drop does not always take place at the same amount of written data.
From the Samsung SSD to one of the two Seagate I got always a constant speed about 400MB/s.
High CPU Load during the transfer.
Windows installed directly on the physical machine, constant speed about 450-480MB/s, no drops, no CPU Load????
Could it be a problem with the BIOS settings?
Sorry for the german screens.
Thanks in advance!
I'm having some weird problems with my server's data transfer rate and need your help.
When ever I copying a large file (30GB) from one Seagate SSD to the other Seagate , it starts at full speed from about 400 -450MB/s and then suddenly drops off to around 150-250 MB/s after some written gigabytes, sometimes the speed increases again after while.
My setup:
Supermicro X10SDV-TLN4F Xeon-D 1541 8Core / 16Thread
2x Samsung DIMM 32GB, DDR4-2400, CL17-17-17, reg ECC M393A4K40BB1
Dell Perc H310 flashed with LSI IT firmware version 20.00.07.00 now displays LSI 9211-8i, but in ESXi and Windows it is recognized as DELL SAS 6GB
1xSamsung 840 Basic, 250GB connected to one SATA port of the board
2xSeagate Nytro XF1230 1920GB connected to the H310
ESXi 6.5.0 Update 1 (Build 7388607) is installed on the Samsung SSD.
The unused space on the Samsung SSD is used for VMFS6 DataStore1.
The VM Windows Server 2016 is located on this DataStore.
VMFS6 DataStore2: First Seagate Nytro XF1230 (thick lazy zeroed), Windows E:
VMFS6 DataStore3: Second Seagate Nytro XF1230 (thick lazy zeroed), Windows F:
First some CDM Bench Screens:
Copying the 30GB File from the Samsung to the first Seagate....
.... and to the second Seagate
No problem so far.
But when ever I copying the FIle from one Seagate SSD to the other....
What I've done / tried so far:
-RDM
no improvement
-eger zeroed provisioning
no improvement
-eger zerod + paravision
no improvment
-H310 passthrough
same, 10 minutes later.... strange....
-H310 P19 Firmware
no improvement
-LSI 9361-8i JBOD
no improvement
-different amount of RAM
strange
4G:
16G:
- other combination
First Seagate connected to the H310 with activated Passthrough
Second Seagate connected to one of the Board Sata Ports, eger zeroed + paravirtual
Different RAM Settings:
4GB:
8GB:
10GB:
12GB:
16GB:
The Drop is not always avail able, sometimes constant speed at about 300MB/s.
The Drop does not always take place at the same amount of written data.
From the Samsung SSD to one of the two Seagate I got always a constant speed about 400MB/s.
High CPU Load during the transfer.
Windows installed directly on the physical machine, constant speed about 450-480MB/s, no drops, no CPU Load????
Could it be a problem with the BIOS settings?
Sorry for the german screens.
Thanks in advance!