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Forum Discussion
4k sector ?
Hi, I am new to readynas.
I just bought an Ultra 4. At same time I bought 4 Seagate Barracuda Green 2TB SATA 6Gb/s, (SATA 3.0), 64MB Cache, 5900RPM, 3.5".
I installed the new discs in the new Ultra. The Ultra is using Readiator 4.2.19
I took a performance test with drag and drop a 3 gb file from and to the Ultra,and got 66 mb/s read and 31mb/s write.
Tried several times with different files at 1gb, 2gb and 3gb, and the write was the same, 29-32 mb/s
I am using Netgear GS716Tv2 as switch between the Ultra and the PC and Jumbo is on both at the Nic at the PC and at the Ultra, the switch is using 9216 at the ports.
I read this forum, and saw that low write til the Readynas could be that the disk sectors was 512bytes instead of 4K.
Under I have the partion.log. Am I using 4K sectors ?
Regards Paal
The partion.log:
***** partition output for sda *****
Disk /dev/sda: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 3AC0628E-FAC3-40CF-BD2F-47CA398F55CB
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 64-sector boundaries
Total free space is 4092 sectors (2.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4.0 GiB FD00
2 8388672 9437247 512.0 MiB FD00
3 9437248 3907025072 1.8 TiB FD00
Disk /dev/sda: 243201 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8257536 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sda1 0+ 242251- 242252- 1953514583+ ee EFI GPT
/dev/sda2 0 - 0 0 0 Empty
/dev/sda3 0 - 0 0 0 Empty
/dev/sda4 0 - 0 0 0 Empty
***** partition output for sdb *****
Disk /dev/sdb: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 90CE1EC8-F613-4B37-8987-9A5DF796BF9D
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 64-sector boundaries
Total free space is 4092 sectors (2.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4.0 GiB FD00
2 8388672 9437247 512.0 MiB FD00
3 9437248 3907025072 1.8 TiB FD00
Disk /dev/sdb: 243201 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8257536 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdb1 0+ 242251- 242252- 1953514583+ ee EFI GPT
/dev/sdb2 0 - 0 0 0 Empty
/dev/sdb3 0 - 0 0 0 Empty
/dev/sdb4 0 - 0 0 0 Empty
***** partition output for sdc *****
Disk /dev/sdc: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): EBACBCC1-0CAB-4532-A27A-3713C343721D
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 64-sector boundaries
Total free space is 4092 sectors (2.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4.0 GiB FD00
2 8388672 9437247 512.0 MiB FD00
3 9437248 3907025072 1.8 TiB FD00
Disk /dev/sdc: 243201 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8257536 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdc1 0+ 242251- 242252- 1953514583+ ee EFI GPT
/dev/sdc2 0 - 0 0 0 Empty
/dev/sdc3 0 - 0 0 0 Empty
/dev/sdc4 0 - 0 0 0 Empty
***** partition output for sdd *****
Disk /dev/sdd: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 5FB8E81B-D308-4440-9A8E-6D8BEC3D94E0
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 64-sector boundaries
Total free space is 4092 sectors (2.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4.0 GiB FD00
2 8388672 9437247 512.0 MiB FD00
3 9437248 3907025072 1.8 TiB FD00
Disk /dev/sdd: 243201 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8257536 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdd1 0+ 242251- 242252- 1953514583+ ee EFI GPT
/dev/sdd2 0 - 0 0 0 Empty
/dev/sdd3 0 - 0 0 0 Empty
/dev/sdd4 0 - 0 0 0 Empty
I just bought an Ultra 4. At same time I bought 4 Seagate Barracuda Green 2TB SATA 6Gb/s, (SATA 3.0), 64MB Cache, 5900RPM, 3.5".
I installed the new discs in the new Ultra. The Ultra is using Readiator 4.2.19
I took a performance test with drag and drop a 3 gb file from and to the Ultra,and got 66 mb/s read and 31mb/s write.
Tried several times with different files at 1gb, 2gb and 3gb, and the write was the same, 29-32 mb/s
I am using Netgear GS716Tv2 as switch between the Ultra and the PC and Jumbo is on both at the Nic at the PC and at the Ultra, the switch is using 9216 at the ports.
I read this forum, and saw that low write til the Readynas could be that the disk sectors was 512bytes instead of 4K.
Under I have the partion.log. Am I using 4K sectors ?
Regards Paal
The partion.log:
***** partition output for sda *****
Disk /dev/sda: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 3AC0628E-FAC3-40CF-BD2F-47CA398F55CB
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 64-sector boundaries
Total free space is 4092 sectors (2.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4.0 GiB FD00
2 8388672 9437247 512.0 MiB FD00
3 9437248 3907025072 1.8 TiB FD00
Disk /dev/sda: 243201 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8257536 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sda1 0+ 242251- 242252- 1953514583+ ee EFI GPT
/dev/sda2 0 - 0 0 0 Empty
/dev/sda3 0 - 0 0 0 Empty
/dev/sda4 0 - 0 0 0 Empty
***** partition output for sdb *****
Disk /dev/sdb: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 90CE1EC8-F613-4B37-8987-9A5DF796BF9D
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 64-sector boundaries
Total free space is 4092 sectors (2.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4.0 GiB FD00
2 8388672 9437247 512.0 MiB FD00
3 9437248 3907025072 1.8 TiB FD00
Disk /dev/sdb: 243201 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8257536 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdb1 0+ 242251- 242252- 1953514583+ ee EFI GPT
/dev/sdb2 0 - 0 0 0 Empty
/dev/sdb3 0 - 0 0 0 Empty
/dev/sdb4 0 - 0 0 0 Empty
***** partition output for sdc *****
Disk /dev/sdc: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): EBACBCC1-0CAB-4532-A27A-3713C343721D
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 64-sector boundaries
Total free space is 4092 sectors (2.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4.0 GiB FD00
2 8388672 9437247 512.0 MiB FD00
3 9437248 3907025072 1.8 TiB FD00
Disk /dev/sdc: 243201 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8257536 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdc1 0+ 242251- 242252- 1953514583+ ee EFI GPT
/dev/sdc2 0 - 0 0 0 Empty
/dev/sdc3 0 - 0 0 0 Empty
/dev/sdc4 0 - 0 0 0 Empty
***** partition output for sdd *****
Disk /dev/sdd: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 5FB8E81B-D308-4440-9A8E-6D8BEC3D94E0
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 64-sector boundaries
Total free space is 4092 sectors (2.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4.0 GiB FD00
2 8388672 9437247 512.0 MiB FD00
3 9437248 3907025072 1.8 TiB FD00
Disk /dev/sdd: 243201 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8257536 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdd1 0+ 242251- 242252- 1953514583+ ee EFI GPT
/dev/sdd2 0 - 0 0 0 Empty
/dev/sdd3 0 - 0 0 0 Empty
/dev/sdd4 0 - 0 0 0 Empty
27 Replies
Replies have been turned off for this discussion
- Ok. But if you get millions of transmission errors with jumbo frames on, then you are better off turning them off for now.
What PC are you using to test with? Laptops (without SSDs) often have relatively slow disk performance.
BTW, transmit statistics are from the switch's point of view - the switch is transmitting them, the NAS is receiving them (i.e. they are relevant stats for writing to the NAS from the PC). Keep an eye on them - the errors might not be related to jumbo frames. - Hi StephenB
I use a HP 8000 Ultra slim
Windows 7 32 bit
2 gb ram
Nic is Intel 82567LM-3 Gigabit
disk is ST91600412AS ATA
It is strange that when I am connecting the PC directly to the Ultra and not through the switch, I dont get a better performance. fondy wrote: I just bought an Ultra 4. At same time I bought 4 Seagate Barracuda Green 2TB SATA 6Gb/s, (SATA 3.0), 64MB Cache, 5900RPM, 3.5"
these drives are not very performance oriented, that is very likely why the write speed is relatively slow.
for best write speeds you want higher performance drives, ie 7200 rpm, not green, etc.- Hi TeknoJnky
Thanks for your reply
maybe it is the Seagate Barracuda discs that is the limit here with 5900rpm and low performance write from PC's to it?
I wondered of it because I have no better performance when I connected the PC directed to the Ultra
Considered to take a backup of the Ultra and resetting to factory defaults, and then test the performance
Usually green drives lower the ReadyNAS speed by about 10%. He is seeing more than that. Though the PC is also a budget-class green machine - designed for small size and environmentally friendly construction, and not for performance. The desktop drive may be also be limiting the speed.TeknoJnky wrote: fondy wrote: I just bought an Ultra 4. At same time I bought 4 Seagate Barracuda Green 2TB SATA 6Gb/s, (SATA 3.0), 64MB Cache, 5900RPM, 3.5"
these drives are not very performance oriented, that is very likely why the write speed is relatively slow.
for best write speeds you want higher performance drives, ie 7200 rpm, not green, etc.
Though it might be worth playing with the ethernet adapter settings for transmit.
Ethernet flow control should be turned on.
Some of the other stuff could be experimented with, and sometimes it can help. Note the current settings first though.
Maybe try- Interrupt Moderation Rate = off
Adaptive Inter-Frame Spacing = disabled
IPv4 Checksum Offload = disabled
Large Send Offload (IPv4)= disabled
TCP Checksum Offload (IPv4) = disabled
UDP Checksum Offload (IPv4) = disabled- Thanks StephenB
Yes, agree that that the PC is not the best for a test of this.
Will try the other parameters you have mentions above
What it is important to me is that the Ultra is 100%, and that I can change PC and other and better equipment to improve the performance
ragards - and now maybe that the
Seagate Barracuda Green 2TB SATA 6Gb/s, (SATA 3.0), 64MB Cache, 5900RPM, 3.5
is not the best discs for performance ?
Green disks will be somewhat slower than performance or enterprise drives. On the plus side, they should also run cooler and of course they are more energy efficient. As they seem to be working reliably, I would personally keep using them for now. The easiest way to monitor the disk health is to use the email alerts - you will get an email whenever the key SMART statistics degrade.fondy wrote: and now maybe that the
Seagate Barracuda Green 2TB SATA 6Gb/s, (SATA 3.0), 64MB Cache, 5900RPM, 3.5
is not the best discs for performance ?
Your goal of confirming that the ultra is 100% seems like the right one. Keeping an eye on the logs and the network stats is one aspect. BTW, if you don't have a UPS for your ultra, I would strongly recommend that you get one. Also, you should implement a backup strategy for your data. Even RAID arrays will fail sometimes.
Let us know if tweaking the network settings makes any difference.- Thanks a lot StephenB
I have a APC Back-UPS BR 800 which the Ultra is connected to, and on the status and health in Frontview I see that the Ultra has found the ups.
The next step is a backup strategi.
:)
Thanks again StephenB - I don't think it the drives in the NAS, I think it is more to do with the Seagate ST9160412AS and Windows 7 32bit. The ST9 tells me that it is a notebook drive which is confirmed by the fact that you are using an HP 8000 Ultra Slim "desktop". I use quotation marks, because in reality the super small desktops are in reality more akin to a laptop without the built in keyboard and display. The use the super small components of a laptop (hence the 2.5" drive instead of the 3.5" drives used in larger desktops) in a case only slightly larger than a desktop and have the same problems that laptops do - heat dissapation. Whereas in a medium desktop case you can have at least 1 120mm fan (many have 3 or more), and a CPU fan that can move a lot of air, the cases on the laptops and ultra slims restrict the air movement and fan size. To compensate, they slow the entire process down inside to generate less heat.
Your memory, while adequate, is not very robust either. Once Vista came out and was in the market place a while, even though Intel stated that it would run in 1GB, most PC's started being produced with a minimum of 4GB. While the NAS has only 1GB, it is running a slimmed down customized version of Linux, not the large Windows OS with all the heavy graphics that take up some of your memory (Intel 4500 integrated graphics chip). The 32 bit OS will not be as fast as the 64 bit OS either.
The fact that a direct connection did not increase your throughput is actually good, as it tells us that nothing in the network is slowing down the transfer speed. Which is good.
Your desktop is a good capable business oriented machine, but is not overly fast, but then business oriented machines rarely are. They are aimed more at functionality and long term dependability (I still have an HP D530 CMT that is now 9 years old and still functions perfectly well, just with XP Pro and is not a speed demon either).
While you are certainly welcome to try a factory default, do not be surprised if the speed afterward is not improved. Do be sure to back up all data before hand as that will wipe all the data from your NAS drives.
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