Harpz Posted August 19, 2012 Share Posted August 19, 2012 Hi Just finished building my first Unraid server and have a few questions, Sorry total linux noob but loving the experience. I'm Using unRAID Server Basic version: 5.0-rc5 CPU: AMD Sempron 145 2.8GHz Socket AM3 45W 1MB L2 Cache OEM Processor Crucial 4GB (2x2GB) DDR3 1066MHz Memory CL7 1.5V Unbuffered None-ECC Case: Antec P182 MB: Asus M5A78L-M LX V2 Socket AM3+ onboard VGA 8 channel Audio mATX Motherboard PSU: Antec 520W High Current Gamer Modular PSU USB: Lexar JumpDrive FireFly 4GB USB Flash Drive USB Header: StarTech 2 Port USB Motherboard Header Adapter I've pre-cleared the 4 disks I was going to start using with the system, 2x 2TB WD20EARX and 1x WD10EARS and the results seemed OK (results attached, remember noob), the 1TB drives are a couple of old ones I had spare to get me started, the the 2x 2TB drives are new ones I've just brought. The 1x 1TB and 1x 2TB currently used have nothing on and its currently doing a parity check on the blank drives. Its currently running at: Total size: 2 TB Current position: 167.51 GB (8%) Estimated speed: 112.49 MB/sec Estimated finish: 272 minutes 110.29 MB/sec Does the Estimated speed seem correct? root@Pluto:~# dmesg | grep SATA | grep link: ata4: SATA link down (SStatus 0 SControl 300) ata2: SATA link down (SStatus 0 SControl 300) ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata5: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata6: SATA link up 3.0 Gbps (SStatus 123 SControl 300) root@Pluto:~# hdparm -tT /dev/sd[a-z] /dev/sda: Timing cached reads: 3944 MB in 2.00 seconds = 1971.90 MB/sec Timing buffered disk reads: 334 MB in 3.01 seconds = 111.07 MB/sec /dev/sdb: Timing cached reads: 4094 MB in 2.00 seconds = 2046.94 MB/sec Timing buffered disk reads: 376 MB in 3.01 seconds = 124.77 MB/sec /dev/sdc: Timing cached reads: 3988 MB in 2.00 seconds = 1994.40 MB/sec Timing buffered disk reads: 322 MB in 3.02 seconds = 106.73 MB/sec /dev/sdd: Timing cached reads: 4006 MB in 2.00 seconds = 2003.17 MB/sec Timing buffered disk reads: 274 MB in 3.02 seconds = 90.77 MB/sec I also tried to copy 26.78GB of data to a share I set up to test the array and it copies over at any thing between 16 - 34MB/s is this normal as seems a little low also, I've seem people post results of 80-115MB/s and as I'm going to be watch blu-ray iso images from the array via xbmc higher preferred. The arrays connected to the same Gigabit switch as the machine the data's being sent from. root@Pluto:~# ifconfig eth0 eth0 Link encap:Ethernet HWaddr c8:60:00:60:38:1d inet addr:192.168.1.200 Bcast:192.168.1.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:12534716 errors:0 dropped:0 overruns:0 frame:0 TX packets:2503705 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1651591422 (1.5 GiB) TX bytes:153866059 (146.7 MiB) Interrupt:41 Base address:0xa000 root@Pluto:~# ethtool eth0 Settings for eth0: Supported ports: [ TP MII ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Advertised pause frame use: Symmetric Receive-only Advertised auto-negotiation: Yes Link partner advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Link partner advertised pause frame use: Symmetric Receive-only Link partner advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: MII PHYAD: 0 Transceiver: internal Auto-negotiation: on Supports Wake-on: pumbg Wake-on: g Current message level: 0x00000033 (51) Link detected: yes Looking forward to replies and learning, thanks in advance. pre-clear_results.zip syslog-2012-08-19.zip smart_reports_x3.zip Link to comment
Chris Pollard Posted August 19, 2012 Share Posted August 19, 2012 All sounds pretty normal. You might get better write performance if you add a cache drive. Link to comment
Harpz Posted August 19, 2012 Author Share Posted August 19, 2012 Hi So the speeds look the normal then? I transferred another 200GB to the array with teracopy and the transfer sat around the 24-34MB mark, is this the most I can get out of my gigabit network. Will my blu ray iso's play without issues. I must of been mistaken when I thought I say people reporting that they had higher speeds. Are the internal speeds ok as at the moment I'm in the process of transferring files off my main machine to the server, once the first 2tb is empty I'll move that drive to the server then pre clear it and then add it to the array once I know it's ok. The idea is then to use midnight commander to move files about to balance the drives, hence the need to know if the internal transfer speeds are OK. Looking forward to replies. Link to comment
Chris Pollard Posted August 19, 2012 Share Posted August 19, 2012 You can get faster write speeds but you need to use a cache drive. Most people seem to get about the same speeds as you writing direct to the array. Link to comment
Harpz Posted August 19, 2012 Author Share Posted August 19, 2012 Hi thanks for the reply. I was thinking about putting a cache drive in the array to get the data onto the array a bit quicker? I have a spare pre cleared drive I could use as a cache drive. This would mean an upgrade a little earlier then planned but could be worth it as I have 2x 2tb worth of data and drives to move over. Link to comment
dgaschk Posted August 19, 2012 Share Posted August 19, 2012 Hi thanks for the reply. I was thinking about putting a cache drive in the array to get the data onto the array a bit quicker? I have a spare pre cleared drive I could use as a cache drive. This would mean an upgrade a little earlier then planned but could be worth it as I have 2x 2tb worth of data and drives to move over. If your loading data to the cache drive use tera-copy to copy and verify. Don't delete the originals until the mover completes. Keep backups of important data. Read speed should be double the write speed without a cache. Blu-ray iso should require only 5MBps per stream. Link to comment
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