Nic not in "autonegotiation" mode? Transfer limited to 100Mbps

[mbryanr]

Not my unRAID, but a Synology box...why would ethtool eth0 report the following?  I've tried 2 different gigE switches, new cables, connecting directly to the router gigE ports, but my transfers max out at 100Mbps speeds.

 

Settings for eth0:

       Supported ports: [ ]

       Supported link modes:

       Supports auto-negotiation: No

       Advertised link modes:  Not reported

       Advertised auto-negotiation: No

       Speed: 1000Mb/s

       Duplex: Full

       Port: MII

       PHYAD: 8

       Transceiver: internal

       Auto-negotiation: off

       Supports Wake-on: d

       Wake-on: d

       Link detected: yes

 

 

Thanks for the help. This is really aggravating.  Glad unRAID doesn't do this to me.

[Rajahal]

A question for Synology tech support maybe?  I have no idea.

[mbryanr]

I asked Syno at the same time I posted here..but got exactly what I should have expected from Level 1 support --not much.

 

Although the ethtool eth0 command looks strange, it is connected @1000Mbps...

 

Anyways... from further testing (and swapping cables, switches, etc), I can get transfers up to 25MB/s from the Syno to the unRAID (mounted via SMB), which is what I'd expect.

 

Transfers to the Syno are ~10-12MB/s - which is strange, but I believe I may have found the reason.  I had a drive failure previously, and replaced a single HD154UI with the newer HD155UI...yup 512kb and 4K in a Raid1 configuration.  So I asked Synology what the impact of the combination would be?  Their response:

Thanks for writing us. We seriously recommend you not do that. There will be considerable impact on the drive performance in RAID config.

 

Fortunately, I have the RMA HD154UI still available and will rebuild the Syno array.

 

Must say, another reason I like unRAID - just throw any drive in and forget about it!  So far in 1 year, I've had 1 drive failure, and virtually no other issues.  Running without reboot for 3 months now.  

 

I'll update when I get the drive swapped.

Edit:  I got a little lazy since I've started running unRAID, and didn't consider the consequences of mismatching drives.