jnko

Well that depends on how the NAS is being used. When idle (low cpu activity) and disks spun down there is no need for fans. But when all my three 8TB disks are running with certain activity the temperature inside the case can grow quite high without the fans. But due to the fact that my NAS is sleeping most of the time with disks spun down I would be glad if I could turn off the fans completely When stressing everything without fans the board can get up to 90°C and the HDDs up to 60°C I did run fio for HDD I/O fio --name=randrw --ioengine=libaio --iodepth=1 --rw=randwrite --bs=4k --direct=1 --size=2048M --numjobs=8 --runtime=2400 --group_reporting and stress for CPU load stress --cpu 2 While monitoring with watch -n 30 "cat /sys/class/thermal/thermal_zone0/temp; hddtemp /dev/sdb; hddtemp /dev/sdc" With fans running the CPU(board) temp does even reach 65°C and HDD are at about 40°C. Fans are needed ;-)

Uups, you are right. My fault. I didn't searched far enough in the kernel messages. Thanks for the info. I will wait... It's not the power consumption (which is around 0.1W per fan) it's just the "It is turned off but fans are still spinning" thing ;-)

How to make wake.on-lan work? I enabled wake on lan (wol) with ethtool -s eth0 wol g ethtool eth0 Settings for eth0: Supported ports: [ TP MII ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Advertised pause frame use: No Advertised auto-negotiation: Yes Link partner advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Link partner advertised pause frame use: No Link partner advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: MII PHYAD: 0 Transceiver: internal Auto-negotiation: on Supports Wake-on: g Wake-on: g Link detected: yes but I'm unable to wake helios4 from another machine with wol 00:50:43:25:fb:84 Helios will not wake up, the NIC is powered (i.e. blinking). Serial console keeps disconnected and the only way to "resume" is a reset. Any suggestions on this? Another issue is that the fans are always powered on with lowest rpm, even while suspended state. Is there any way to stop fans completely? fancontrol has been stopped manually and controlling fans with echo 0 | tee -a /sys/class/hwmon/hwmon2/pwm1 /sys/class/hwmon/hwmon3/pwm1 with 0..255 works so far but fans are unstoppable. Thanks in advance

How to use Cryptographic and XOR DMA engine with mdadm (debian)? Is there already any documentation for using the encryption and/or the XOR DMA eingine for RAID usage or are therse used automatically? The marvel-cesa kernel module is loaded but what I've read about marvells xor engine there should exists a mv_xor module which I'm unable to find. So the whole question is how can I use the marvel xor engine with mdadm to build up an accelerated RAID? Thanks in advance [Edit] Seems that the xor engine is already built into the kernel. [ 0.004264] xor: measuring software checksum speed [ 0.083146] arm4regs : 2089.200 MB/sec [ 0.166397] 8regs : 1607.200 MB/sec [ 0.249644] 32regs : 1544.800 MB/sec [ 0.332895] neon : 1518.800 MB/sec [ 0.332898] xor: using function: arm4regs (2089.200 MB/sec) [ 0.004264] xor: measuring software checksum speed [ 0.083146] arm4regs : 2089.200 MB/sec [ 0.166397] 8regs : 1607.200 MB/sec [ 0.249644] 32regs : 1544.800 MB/sec [ 0.332895] neon : 1518.800 MB/sec [ 0.332898] xor: using function: arm4regs (2089.200 MB/sec)