March 26, 20197 yr Hi there. I'm rrying to setup unRaid on Dell PowerEdge T330, and after assigning hard drives: 1 for parity, another for data (2x2tb Dell SAS hdd) - parity sync is verry slow (28 MB/sec). I also have 2 SSD for cache (raid1) Is there something I have to change in IDRAC? I changed controller to HBA (from RAID). Controller is PERC H330.
March 27, 20197 yr Community Expert Check that write cache is enable for the SAS drives: https://forums.unraid.net/topic/72862-drive-write-speeds-really-slow-solved/
March 27, 20197 yr Author When I type in terminal /etc# sdparm -g WCE /dev/sdd I get this: -bash: /etc#: No such file or directory Parity is (sdd) Data is (sde)
March 27, 20197 yr Community Expert Sorry, forgot to mention, you need to install sdparm, you can get it from Nerd Pack
March 27, 20197 yr Author WOW! Now we are getting someowhere!!! I did everything and now getting parity sync from 25 MB/sec to 161.6 MB/sec! Woohoo! That's awsome! Thank you verry much for ur assistance! Does that speed look's OK now? Is 160 MB/sec normal speed I should be getting? Also, do I need to do the same for cache drives? I have 2 intel SSD in RAID 1.
March 27, 20197 yr Community Expert 3 minutes ago, INTEL said: Is 160 MB/sec normal speed I should be getting? Looks about right. 4 minutes ago, INTEL said: Also, do I need to do the same for cache drives? I have 2 intel SSD in RAID 1. SSDs are SATA, only SAS devices sometimes come with cache disable.
March 27, 20197 yr Author I wasn't getting any sleep last night because of this! Thank you for your help, I will get some sleep today
March 29, 20197 yr Author Well, my happines didn't last... I had to eject data disk, and when i add it again, speed went down to 27MBPS again, tryed to enter command again, and it gives me error sdparm not found. What is interesting when I enter this command sdparm -g WCE /dev/sdd, it shows me that cache is disabled, but when I try to enter sdparm --set=WCE /dev/sdd, I get error sdparm not found... I tryed reinstalling sdparm from nerd pack, but no luck.
March 29, 20197 yr Author Actualy, I just tryed it again, I cannot run sdparm command at all - sdparm command not found
March 29, 20197 yr Author I tryed to upgrade unRaid to latest 6.7.0-rc6, hoping it will solve the problem... Here is a screenshot of the error I get.
March 29, 20197 yr Community Expert Doesn't make much sense, addons are installed on every boot, post the diags, maybe something visible.
March 29, 20197 yr Author Alright, something new happend... I uninstalled nerdpack, deleted NerdPack folder from USB\config\plugins, rebooted server, installed nerdpack and sdparm again, and this is what happens now:
March 29, 20197 yr Community Expert Make sure you type the commands, don't copy/paste from the forum as sometimes extra characters are inserted.
March 29, 20197 yr Author OK.... feeling stupid now.... 🤦♂️ It was because of copying command instead of entering it.... Thank you again! And was waiting for parity sync for 18hours couse of this....
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