slow sata link speed

[gareth_iowc]

Hi all,

 

i've had some performance issues with my nas and after a bit of digging i've found two of the drives are only running at sata 2.

 

root@Nas:~# dmesg | grep -i sata | grep 'link up'

[   11.104395] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)

[   11.584437] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)

[   12.064481] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300)

[   12.544523] ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300)

 

Here are a list of my drives:

[0:0:0:0]    disk    SanDisk  Ultra            1.00  /dev/sda   15.3GB
[1:0:0:0]    disk    ATA      WDC WD40EFRX-68W 0A82  /dev/sdb   4.00TB
[2:0:0:0]    disk    ATA      WDC WD40EFRX-68W 0A82  /dev/sdc   4.00TB
[3:0:0:0]    disk    ATA      WDC WD40EFRX-68W 0A82  /dev/sdd   4.00TB
[4:0:0:0]    disk    ATA      ST6000VN0041-2EL SC61  /dev/sde   6.00TB

The nas is a HP Microserver gen 8

 

I'd like to get all drives running at sata3 so any suggestions would be great 

shibby-nas-diagnostics-20171214-2357 2.zip

Edited December 15, 2017 by gareth_iowc

[JorgeB]

Post you diagnostics but SATA2 is enough for any HDD currently on the market, SSDs are a different story.

[gareth_iowc]

8 minutes ago, johnnie.black said:

Post you diagnostics but SATA2 is enough for any HDD currently on the market, SSDs are a different story.

 

i have attached them to the original post  

[gareth_iowc]

Quote

Storage Controller HPE Dynamic Smart Array B120i Controller NOTE: HDD bays 1 and 2 support 6.0Gb/s SATA. HDD bays 3 and 4 support 3.0Gb/s SATA.

 

doh

[JorgeB]

Check that write cache is enable in your bios, it comes disable by default on Microservers gen7/8 and will make write performance much worse, including rebuilds.

[gareth_iowc]

On 15/12/2017 at 7:31 AM, johnnie.black said:

Check that write cache is enable in your bios, it comes disable by default on Microservers gen7/8 and will make write performance much worse, including rebuilds.

 

you wouldn't happen to know what menu it's under? 

 

i could't seam to find it 

[JorgeB]

2 hours ago, gareth_iowc said:

 

you wouldn't happen to know what menu it's under? 

 

i could't seam to find it 

 

Nope, only had gen7s, but it's there for sure

[gareth_iowc]

Ah ok I don’t think it’s there any more.

 

i did some research and it appears there’s an unlocked bios rom for the 7th gen that allowed more features. 

 

I found a nice plugin that tested the disk speed.

 

The first seagate Drive claims it’s 600mbps transfer speed on paper.

 

 

[JorgeB]

8 hours ago, gareth_iowc said:

i did some research and it appears there’s an unlocked bios rom for the 7th gen that allowed more features.

It's also on the 8th gen stock bios, unless they removed it in a newer bios, but would be surprised by that.

 

8 hours ago, gareth_iowc said:

The first seagate Drive claims it’s 600mbps transfer speed on paper.

The Seagate doesn't claim 600MB/s sustained transfer speed, they have a 600MB/s link speed and can achieve that for very small periods of time when transferring from cache, but like I said before no disk currently on the market needs more than SATA2, though you're getting close.