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FizzerUK
Posts: 11 | Last online: 07.30.2017
Date registered
07.09.2017
Sex
not specified
    • FizzerUK has written a new post "RAID 5 and Seagate Archive SMR drives " 07.30.2017

      Yes, I use both along with ATTO.
      I post Crystal as it is easier to post / read at a glance and I have found Anvil gives massively varying numbers 10MB/s to 60MB/s. Crystal always seam to be around the same, maybe a few MB/s different on each run.

    • FizzerUK has written a new post "RAID 5 and Seagate Archive SMR drives " 07.30.2017

      Zitat von Fernando im Beitrag #15

      1. Which are the "Policies" settings of the RAID5 array (right-click onto the RAID5 device within the "Disk drives" section of the Device Manager > "Properties" > "Policies")? Both options should be enabled, if you want the best possible write performance!


      Had very little change in performance with both enabled.
      Zitat von Fernando im Beitrag #15

      2. Did you enable the write caching option "Write-Back" from within the Intel RST Control Panel?


      Whenever I choose Write Back in the cache it would freeze on testing the Write in CrystalMark requiring me to Task kill the window.
      System slowed also.
      Testing read was fine.
      This happened on BOTH my RAID0 SSD's and the Archive drive RAID5.
      Never found why, it would do this on the 3 different versions of RST I tried it on v11, v12 and v15.

    • FizzerUK has written a new post "RAID 5 and Seagate Archive SMR drives " 07.30.2017

      OK

      Last update for a while, as I will have to put all the 8TB's of data onto a 'Pooled' configuration so will take a while.
      Before I do that I will need to really really read around and find the best software solution.
      Something like 'SnapRaid' or 'DrivePool'

      Updating post to RAID 5 and Seagate Archive SMR drives.

      My issues are down to NOT reading around enough before buying what appeared to be good value hard drives.
      ACTUAL useable storage cost of $220.00/7452GB = 0.295 Cent/GB.

      If you want to read about the SMR (Shingled Magnetic Recording) then there are some great articles now as this technology becomes more popular.
      Briefly SMR is a method of overlaying data tracks to increase storage capacity.
      I am sure in the near future a lot of people will be looking at cheap large storage using this technology but should be aware of it's limitations.
      Anyway, I have defiantly had better luck with these drives utilising RST, once I got it installed and playing nice with my x79 chipset board.

      The Seagate Archive ST8000AS0002 8TB is not really designed as a general RAID storage solution.
      Seagate themselves does not recommended utilizing these drives in RAID or NAS environments.
      Drives are more suited to 'Cold Storage' or WORM (Write Once Read Many). Below I posted an example of performance you get in RAID Read which I think is really good, but write is poor.
      Also, attached a Cache drive SSD as I can now use RST as expected write is pretty level BUT read has dropped off significantly, shame I can't just do Cache for write only.
      I must also add, the drives still time out a little during testing, maybe due to the SMR technology but RST does not as aggressively drop the drive from the array as RSTe did.
      Or so it would seem.

      So, now to re configure the whole system and utilise these drives as intended.
      I have an unused 120GB SSD for a cache drive.
      Just need to find a software solution that is compatible to Windows and Linux if possible. May just stick with a windows solution, but I worry if I retire this PC to being a home server only then I would want to install a Linux environment.

      So folks any suggestions / experiences of software like Stablebit DrivePool, any recommendations are greatly appreciated.

      I will do a final update once the whole system is configured. Maybe it will be of help to 1 person someday.

      Speed Raid 5 no-Cache drive in RST


      Speed with 64GB of Cache in RST

    • FizzerUK has written a new post "RAID 5 and Seagate Archive SMR drives " 07.25.2017

      OK..
      I remember why I use RSTe.
      Motherboard is an x79 chipset C600, I believe I read somewhere that RSTe was the best way to go with it due to support. https://communities.intel.com/thread/44290
      Tried a W10 reinstall and RST but it was AWFULL disk performance.

      Anyway back to RSTe. Install of Intel RSTe Drivers & Software Set v4.5.6.1009.
      BUT again I have a disk going offline .
      This time it is a different disk on Port 5.
      Momntarily drops out, I have to reboot and reset the Metadata and add back to the array.
      Before it happened I was getting 30MB/s write speed.

      I do not know what is happening.


      EDIT by Fernando: Unneeded blank lines removed (to save space)

    • FizzerUK has written a new post "RAID 5 and Seagate Archive SMR drives " 07.23.2017

      Hi,
      Yes will look into this, I am going to re-install the OS.

      The v3.5 ROM must have slipped in when I swapped Motherboards.
      I will swap over from RSTe to RST, can't remeber why it was RSTe as the system was built along time ago. Must have read somewhere...

      Thanks for the input.

    • FizzerUK has written a new post "RAID 5 and Seagate Archive SMR drives " 07.16.2017

      RSTe mode (as above screenies)

      Driver Software set installed was Intel RSTe Drivers & Software Set v4.6.0.2116

      I have Intel RSTe v4.6.0.1048 listed in Programs and features

      And BIOS ROM in the option ROM states v3.5.0

      Is that what you wanted?

    • FizzerUK has written a new post "RAID 5 and Seagate Archive SMR drives " 07.16.2017

      Well....

      Finished initialising, write speed still very slow.

      Now it has happened again. This time I have screenshot the exact error, except this time I could not set the disk to 'Normal'

      Intel RSTe Interface




      After a reboot I have




      So I cleared the MetaData as the disk was not moving back into the array.
      I was planning on creating a partition on the failed disk so I can test it out of the array to see if it is slowing everything down.

      But have this in diskmgmt.msc and RST interface.

      Diskmgmt.msc


      RSTe Interface




      Here is the SMART info for GOOD and BAD disks is the BAD one failing? Can you tell from the SMART info.

      GOOD DIsk in ARRAY


      BAD Disk out of ARRAY



      I could try and RMA the disk but it appears online and healthy. That may not fix the issue.
      I want to test the bad disk out of the ARRAY first.

      Any advice!


      EDIT!
      Found the error in eventvwr.
      Looks like a disk timeout for 2 minutes with disk resets issued, ARRAY marked as BAD then the disk cameback online.


    • FizzerUK has written a new post "RAID 5 and Seagate Archive SMR drives " 07.11.2017

      OK..

      There you go. Just takes an independant eye to suggest some troubleshooting that I have not thought of...

      Put a PSU just on the 3 Archive drives and Bang!



      This is while I am still initilising. Read speed is back up quite a bit.

      Will wait until initilising has completed and do some further testing / troubleshooting / tuning.


      Next step is to make sure my New / OLD motherbard setup has correct Firmware / drivers I guess!
      Just as I did with the old one.

      Thanks. Have a coffee on me!

    • FizzerUK has written a new post "RAID 5 and Seagate Archive SMR drives " 07.11.2017

      I used to overclock in my 'youth' but stopped that game a loooong time ago.

      Yes the i7 and x79 is from my golden of (only 5 years ago) gaming.

      PSU I have not considered.

      Have downscaled from 2 x 750W PSU to a single one running the 3 x Seagate archives and the GTX980Ti.
      Before I had 4 3TB and 6 2 TB on 1 supply and the system SSD's and Gaming card on the other.

      I am going to do some power tests and let you know.
      I still have my meters kicking around.

      You maybe onto something here.....

      I did not even consider that!

    • FizzerUK has written a new post "RAID 5 and Seagate Archive SMR drives " 07.11.2017

      Thanks for the welcome, actually been using the forum for a couple of years now, just never had a issue, all the guides have been great.

      Yes, not knowing... This is the difficulty especially for me now!

      RAID has been fine for 3 weeks after the Motherboard change.
      BUT, I did not check write speed when I swapped it out, everything appeard fine.

      SO could a difference in RAID firmware be the case?

      Last week it went offline, not disk errors. No data loss.
      Set back to online, I am looking in RSTe Help for the exact statement RSTe interface gave.

      Write speed down to above post.

      No hardware change since the motherboard 3 weeks ago, not OS change, no driver change.

      9 days and still initilaising 66%. :-(

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