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New (to me) ARC-1231ML RAID controller (JBOD mode) with nice performance bump over the AOC-SASLP-MV8 it replaced. Tunables Report from unRAID Tunables Tester v2.2 by Pauven NOTE: Use the smallest set of values that produce good results. Larger values increase server memory use, and may cause stability issues with unRAID, especially if you have any add-ons or plug-ins installed. Test | num_stripes | write_limit | sync_window | Speed --- FULLY AUTOMATIC TEST PASS 1 (Rough - 20 Sample Points @ 3min Duration)--- 1 | 1408 | 768 | 512 | 98.8 MB/s 2 | 1536 | 768 | 640 | 93.9 MB/s 3 | 1664 | 768 | 768 | 75.1 MB/s 4 | 1920 | 896 | 896 | 72.6 MB/s 5 | 2176 | 1024 | 1024 | 73.0 MB/s 6 | 2560 | 1152 | 1152 | 72.9 MB/s 7 | 2816 | 1280 | 1280 | 72.9 MB/s 8 | 3072 | 1408 | 1408 | 74.2 MB/s 9 | 3328 | 1536 | 1536 | 73.3 MB/s 10 | 3584 | 1664 | 1664 | 72.6 MB/s 11 | 3968 | 1792 | 1792 | 73.6 MB/s 12 | 4224 | 1920 | 1920 | 72.6 MB/s 13 | 4480 | 2048 | 2048 | 72.8 MB/s 14 | 4736 | 2176 | 2176 | 71.6 MB/s 15 | 5120 | 2304 | 2304 | 73.0 MB/s 16 | 5376 | 2432 | 2432 | 71.7 MB/s 17 | 5632 | 2560 | 2560 | 73.0 MB/s 18 | 5888 | 2688 | 2688 | 74.3 MB/s 19 | 6144 | 2816 | 2816 | 73.1 MB/s 20 | 6528 | 2944 | 2944 | 71.6 MB/s --- Targeting Fastest Result of md_sync_window 512 bytes for Special Pass --- --- FULLY AUTOMATIC TEST PASS 1b (Rough - 4 Sample Points @ 3min Duration)--- 21 | 896 | 768 | 128 | 57.0 MB/s 22 | 1024 | 768 | 256 | 74.0 MB/s 23 | 1280 | 768 | 384 | 85.5 MB/s 24 | 1408 | 768 | 512 | 90.5 MB/s --- Targeting Fastest Result of md_sync_window 512 bytes for Final Pass --- --- FULLY AUTOMATIC TEST PASS 2 (Final - 16 Sample Points @ 4min Duration)--- 25 | 1288 | 768 | 392 | 86.1 MB/s 26 | 1296 | 768 | 400 | 85.6 MB/s 27 | 1304 | 768 | 408 | 86.6 MB/s 28 | 1312 | 768 | 416 | 87.1 MB/s 29 | 1320 | 768 | 424 | 87.5 MB/s 30 | 1328 | 768 | 432 | 88.3 MB/s 31 | 1336 | 768 | 440 | 88.3 MB/s 32 | 1344 | 768 | 448 | 88.6 MB/s 33 | 1360 | 768 | 456 | 88.8 MB/s 34 | 1368 | 768 | 464 | 89.2 MB/s 35 | 1376 | 768 | 472 | 89.4 MB/s 36 | 1384 | 768 | 480 | 89.4 MB/s 37 | 1392 | 768 | 488 | 90.2 MB/s 38 | 1400 | 768 | 496 | 89.9 MB/s 39 | 1408 | 768 | 504 | 90.7 MB/s 40 | 1416 | 768 | 512 | 90.9 MB/s Completed: 2 Hrs 24 Min 48 Sec. Best Bang for the Buck: Test 1 with a speed of 98.8 MB/s Tunable (md_num_stripes): 1408 Tunable (md_write_limit): 768 Tunable (md_sync_window): 512 These settings will consume 71MB of RAM on your hardware. Unthrottled values for your server came from Test 40 with a speed of 90.9 MB/s Tunable (md_num_stripes): 1416 Tunable (md_write_limit): 768 Tunable (md_sync_window): 512 These settings will consume 71MB of RAM on your hardware. This is -7MB less than your current utilization of 78MB. NOTE: Adding additional drives will increase memory consumption. In unRAID, go to Settings > Disk Settings to set your chosen parameter values.

FYI I am getting a nice speed boost from ARC-1231ML over the AOC-SASLP-MV8 it replaced. Ran unraid-tunables-tester.sh in full auto and the speeds show about 67% improvement AND using -7MB less RAM. I am a happy customer. current run on ARC-1231ML Completed: 2 Hrs 24 Min 48 Sec. Best Bang for the Buck: Test 1 with a speed of 98.8 MB/s Tunable (md_num_stripes): 1408 Tunable (md_write_limit): 768 Tunable (md_sync_window): 512 These settings will consume 71MB of RAM on your hardware. Unthrottled values for your server came from Test 40 with a speed of 90.9 MB/s Tunable (md_num_stripes): 1416 Tunable (md_write_limit): 768 Tunable (md_sync_window): 512 These settings will consume 71MB of RAM on your hardware. This is -7MB less than your current utilization of 78MB. NOTE: Adding additional drives will increase memory consumption previous results on the AOC-SASLP-MV8... Completed: 2 Hrs 14 Min 4 Sec. Best Bang for the Buck: Test 2 with a speed of 66.6 MB/s Tunable (md_num_stripes): 1536 Tunable (md_write_limit): 768 Tunable (md_sync_window): 640 These settings will consume 78MB of RAM on your hardware. Unthrottled values for your server came from Test 23 with a speed of 69.3 MB/s Tunable (md_num_stripes): 6024 Tunable (md_write_limit): 2712 Tunable (md_sync_window): 2712 These settings will consume 305MB of RAM on your hardware. This is 240MB more than your current utilization of 65MB. NOTE: Adding additional drives will increase memory consumption.

Disk names do not survive a reboot. Here is the contents of my Go file: running commands from telnet works for now.

Swapped Areca ARC-1231ML in today. Like you mentioned it is *tight* fit even in a mid size tower. Good news is the card displays info & access to BIOS during POST (other card stopped for some reason). Can you explain what the purpose of this part is? I assumed you meant to run it for each slot (i did). What I got was SMART report for each. Is this required or just informational? Adding commands to go file now and will reboot and run some benches. Hoping for a bump in speed.

My ARC-1231ML arrives today. Have to wait until tomorrow to play as I have a 4TB on pre-clear that won't finish until early tomorrow.

watching with great interest

I applied the Best Bang for the Buck settings. I am appalled at my disk speeds tho. Tunables Report from unRAID Tunables Tester v2.2 by Pauven NOTE: Use the smallest set of values that produce good results. Larger values increase server memory use, and may cause stability issues with unRAID, especially if you have any add-ons or plug-ins installed. Test | num_stripes | write_limit | sync_window | Speed --- FULLY AUTOMATIC TEST PASS 1 (Rough - 20 Sample Points @ 3min Duration)--- 1 | 1408 | 768 | 512 | 65.8 MB/s 2 | 1536 | 768 | 640 | 66.6 MB/s 3 | 1664 | 768 | 768 | 66.8 MB/s 4 | 1920 | 896 | 896 | 66.9 MB/s 5 | 2176 | 1024 | 1024 | 67.2 MB/s 6 | 2560 | 1152 | 1152 | 67.8 MB/s 7 | 2816 | 1280 | 1280 | 68.8 MB/s 8 | 3072 | 1408 | 1408 | 69.0 MB/s 9 | 3328 | 1536 | 1536 | 68.5 MB/s 10 | 3584 | 1664 | 1664 | 69.1 MB/s 11 | 3968 | 1792 | 1792 | 68.9 MB/s 12 | 4224 | 1920 | 1920 | 69.1 MB/s 13 | 4480 | 2048 | 2048 | 69.0 MB/s 14 | 4736 | 2176 | 2176 | 69.1 MB/s 15 | 5120 | 2304 | 2304 | 69.0 MB/s 16 | 5376 | 2432 | 2432 | 68.6 MB/s 17 | 5632 | 2560 | 2560 | 68.9 MB/s 18 | 5888 | 2688 | 2688 | 69.3 MB/s 19 | 6144 | 2816 | 2816 | 69.4 MB/s 20 | 6528 | 2944 | 2944 | 69.0 MB/s --- Targeting Fastest Result of md_sync_window 2816 bytes for Final Pass --- --- FULLY AUTOMATIC TEST PASS 2 (Final - 16 Sample Points @ 4min Duration)--- 21 | 5984 | 2696 | 2696 | 69.0 MB/s 22 | 6008 | 2704 | 2704 | 69.0 MB/s 23 | 6024 | 2712 | 2712 | 69.3 MB/s 24 | 6040 | 2720 | 2720 | 69.0 MB/s 25 | 6056 | 2728 | 2728 | 69.0 MB/s 26 | 6080 | 2736 | 2736 | 68.9 MB/s 27 | 6096 | 2744 | 2744 | 69.1 MB/s 28 | 6112 | 2752 | 2752 | 69.0 MB/s 29 | 6128 | 2760 | 2760 | 69.2 MB/s 30 | 6144 | 2768 | 2768 | 68.6 MB/s 31 | 6168 | 2776 | 2776 | 69.1 MB/s 32 | 6184 | 2784 | 2784 | 69.1 MB/s 33 | 6200 | 2792 | 2792 | 68.8 MB/s 34 | 6216 | 2800 | 2800 | 68.8 MB/s 35 | 6240 | 2808 | 2808 | 69.3 MB/s 36 | 6256 | 2816 | 2816 | 68.9 MB/s Completed: 2 Hrs 14 Min 4 Sec. Best Bang for the Buck: Test 2 with a speed of 66.6 MB/s Tunable (md_num_stripes): 1536 Tunable (md_write_limit): 768 Tunable (md_sync_window): 640 These settings will consume 78MB of RAM on your hardware. Unthrottled values for your server came from Test 23 with a speed of 69.3 MB/s Tunable (md_num_stripes): 6024 Tunable (md_write_limit): 2712 Tunable (md_sync_window): 2712 These settings will consume 305MB of RAM on your hardware. This is 240MB more than your current utilization of 65MB. NOTE: Adding additional drives will increase memory consumption. In unRAID, go to Settings > Disk Settings to set your chosen parameter values.

Your drivers are k10temp and fam15h_power. okay now what do I do with that information? I tried putting fam15h_power the "available drivers" box and hit Detect and nothing happened as far as I can tell.

Try this and post the output: wget http://www.lm-sensors.org/svn/lm-sensors/trunk/prog/detect/sensors-detect -O /tmp/sensors-detect yes ''|perl /tmp/sensors-detect 2>&1|grep -Po "^Driver.{2}\K[^\']*" from telnet: Tower login: root Password: Linux 3.17.4-unRAID. Last login: Sun Jan 18 20:04:32 -0800 2015 on /dev/pts/0 from Toshiba.home. root@Tower:~# wget http://www.lm-sensors.org/svn/lm-sensors/trunk/prog/detect/se'>http://www.lm-sensors.org/svn/lm-sensors/trunk/prog/detect/se nsors-detect -O /tmp/sensors-detect --2015-02-04 15:14:15-- http://www.lm-sensors.org/svn/lm-sensors/trunk/prog/det ect/sensors-detect Resolving www.lm-sensors.org (www.lm-sensors.org)... 160.45.254.26 Connecting to www.lm-sensors.org (www.lm-sensors.org)|160.45.254.26|:80... conne cted. HTTP request sent, awaiting response... 200 OK Length: 209836 (205K) [text/plain] Saving to: ?Çÿ/tmp/sensors-detect?ÇÖ 100%[======================================>] 209,836 149KB/s in 1.4s 2015-02-04 15:14:17 (149 KB/s) - ?Çÿ/tmp/sensors-detect?ÇÖ saved [209836/209836] root@Tower:~# yes ''|perl /tmp/sensors-detect 2>&1|grep -Po "^Driver.{2}\K[^\']* " k10temp to-be-written fam15h_power root@Tower:~#

I click detect and nothing happens. Page flashed briefly and then just sits there. How long should it take?. Meanwhile the only sensor it has set (from previous versions) is the CPU. All fields other than "Available drivers:" text box are disabled.

I got the same "no space errors" updating 3 plugins (Statistics, Streams, & System info). All updated to new versions and I can see it wrote to the USB just fine.

TOSHIBA MD04ACA500_xxxxx (sdb) 4883770532 * 5 TB Linux 3.9.11p-unRAID. root@Tower:~# hdparm -N /dev/sdb /dev/sdb: max sectors = 9767541168/9767541168, HPA is disabled

I am thinking it actually was "HPA?" on the other box I precleared it on and I was just looking at the wrong view. I will go with your Plan A suggestion... if I run across a 5TB that is larger, it becomes the parity drive I have both boxes churning right now (tower2 preclearing tower1's old parity to be new data drive and tower1 rebuilding parity on 5TB). Hate to disturb them when they are working lol

shows as 4,883,770,532 in detail view

now it shows "HPA?" in Tower1 MyMain while Rebuilding Parity. Is this going to be a problem? Odd it did not show in Tower2 (where it was precleared).

Preclear Successful ... Total time 40:05:21 ... Pre-Read time 9:09:02 (151 MB/s) ... Zeroing time 8:11:57 (169 MB/s) ... Post-Read time 22:43:19 (61 MB/s) Now installed in Tower1 as new parity drive Parity-Sync in progress. Total size: 5 TB Current position: 42.5 MB (0 %) Estimated speed: 42.5 MB/sec Estimated finish: 1 day, 8 hours, 37 minutes

don't see anything as you mention.

size = 4,883,770,552 Pre-Read. 48% @ 175 MB/s (3:51:07) I don't see anything mentioning HPA. Where would that be located?

tried it just now Pre-Read. 27% @ 181 MB/s (2:04:02) I use a KVM with a 21" monitor for the two servers so I have it up on the screen now too.

hmmm... that is what laptop could see through usb2 connection. Drive is preclearing now in unRaid and shows full 5TB. (deleted image to avoid confusion)

5TB arrived a day early. Removing the case is definably a one-way proposition (no screws, uses locking tabs). Not going to be able to send it back now. I believe these are re-branded Hitachi drives. model: MD04ACA500, Mfg data 2/27/14, firmware A0. Preclear on a 2TB takes about 22 hrs so this one will be couple days PS. instructions on ruining the case http://goughlui.com/?p=4688 PSS. No hidden partitions (at least Windows 7 can't see any). Just warranty PDF and autorun to install backup software.

Both boxes have a single AOC-SASLP-MV8 in them. I see some threads here that they appear to work with 3 & 4 TB.

I presume you've already upgraded to v5 (or 6) ... but a more compelling question (given that you've currently got all 2TB drives) is whether or not you've confirmed that the system supports > 2TB drives ... Both boxes are running v5.x. I can't find a definitive yes (or no) on either motherboard as to any limits on HDD size. Asus M4a785-M (older tower) Biostar A880GZ (new box)

Maybe. But you will be the first person using a 5T drive. Depending on the size it may need a myMain config change even if the is no HPA. Let me know when you get it and I can direct you. It will be placed as parity drive on a full 26 TB server (all 2 TB drives). Then I can start replacing those drives with larger and adding the 2 TBs to Tower2

thanks for the heads up. Have Toshiba 5TB arriving soon and it likely has hidden crap.