Synology speedlimitmin

echo "stripe_cache_size: `/sys/block/md2/md/ stripe_cache_size`" #=> 256. Code: Select all. # update to use more RAM (Stripe Cache Size) and higher lower  15 Jun 2010 It is no secret that I am a pretty big fan of excellent Linux Software RAID. In fact, they are still working well except for one of them which had developed a couple of bad sectors. I suspect a read or write to the array will kick off the rebuild again - so often this command does . You may get frustrated when you see it is going to take 22 hours to rebuild the array. During this time, content will still be accessible but you will be unable to make new threads and posts. Jul 30, 2013 You can pause a rebuild with this: echo "idle" > /sys/block/md0/md/sync_action. When doing cat /proc/mdstat getting Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] md2 : active raid5 sdc5[2] sdb5[1] sda5[0] 2925531648 blocks super 1. 2) This is a user forum for Synology users to share experience/ help out each other: if you need direct assistance from the Synology technical support team, please use the following form: I'm about to set up a fresh DS1815+, filled with 10TB drives. You can  I'm setting up a Digital repository for Media file conversion (HD 720p and FullHD 1080p video files) for a client. We need availability and performance. Obviously, I'd like to optimize the RAID build process as much as possible. I have a storage pool with 5 x 4 tb in a raid5, and now I try add another raid5 to the storage pool with 4 x 4tb. General error" and it goes back ?! Anyone have any ida? I use TS-1635, latest fw. Creating, assembling and rebuilding small array is fine. 2 level 5, 64k  Forum rules 1) Maintenance has been postponed. 2) This is a user forum for Synology users to share experience /help out each other: if you need direct assistance from the Synology Feb 3, 2012 A variety of value-added services is often why people choose NAS as their file server. echo "speed_limit_min: `cat /proc/sys/dev/raid/ speed_limit_min`" #=> 10000. On my Hi! I've switched from 4x 1TB to 4x 4TB in my Synology DS1512+, but the problem is that the rebuild time is taking very log the default values: echo "speed_limit_max: `cat /proc/sys/dev/raid/speed_limit_max`" #=> 200000. So, I'm wondering why that is and what Synology did to get that to run so quickly. They have a Synology Rackstation and we need 7TB of available space. When I changed from 1000 to 50000, I got a speed increase from ~8M/s to ~12M/s, but 50000 to 100000 did  changed the speed limit min with no results. # update to use more RAM (Stripe Cache Size) and higher lower  Jun 15, 2010 It is no secret that I am a pretty big fan of excellent Linux Software RAID. You can  Sep 20, 2016 The hard drives in my current Synology DS1515+ are due for a change as their warranties are up. Latest firmware means absolutely nothing. 2 level 5, 64k chunk, algorithm 2 [3/3] [UUU] Forum rules 1) On 12/25, Synology Forums will be getting a new layout. echo "speed_limit_min: `cat /proc/sys/dev/raid/speed_limit_min`" #=> 10000. On my log the default values: echo "speed_limit_max: `cat /proc/sys/dev/raid/ speed_limit_max`" #=> 200000. echo "stripe_cache_size: `/sys/block/md2/md/stripe_cache_size`" #=> 256. 2 level 5, 64k  Read through the threads on how to speed up, changed the speed limit min no change. When I changed from 1000 to 50000, I got a speed increase from ~8M/s to ~12M/s, but 50000 to 100000 did  changed the speed limit min with no results. However, mdadm will commence rebuilding on an "event" which it isn't clear what that would be. 05/20 #2. But, things started to get nasty when you try to rebuild or re-sync large size array. Personalities : [linear] [ raid0] [raid1] [raid10] [raid6] [raid5] [raid4] md3 : active raid5 sdc5[7] sdd5[1] sda5[ 5] sdb5[6] sde5[2] 15609134592 blocks super 1. MrVideo. Obviously, I'd like to optimize the RAID build process as much as possible. ds> echo 50000 > / proc/sys/dev/raid/speed_limit_min ds> cat /proc/mdstat. The upgrade date will be announced later. Things I've tried: Changing /proc/sys/dev/raid/speed_limit_min from the default value of 1000 to 50000 and 100000. I installed what we have available now: Brand new 4 x 5TB desktop Seagate  2 level 5, 64k chunk, algorithm 2 [3/3] [UUU] changed the speed limit min with no results. Things I've tried: Changing /proc/sys/dev/raid/speed_limit_min from the default value of 1000 to 50000 and 100000. 2) This is a user forum for Synology users to share experience/help out each other: if you need direct assistance from the Synology  I'm about to set up a fresh DS1815+, filled with 10TB drives. ds> echo 50000 > /proc/sys/dev/raid/speed_limit_min ds> cat /proc/mdstat. Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] md3 : active raid5 sdc5[7] sdd5[1] sda5[5] sdb5[6] sde5[2] 15609134592 blocks super 1. You must post the firmware  So, I'm wondering why that is and what Synology did to get that to run so quickly. But I just get an error say "Unknown error. Assuming md0 is your md device