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Slow write speed to array from internal drives

luker
in General Support

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I am getting slow transfer speed when I transfer a large file to the array from an SSDs on the cache pool or using Unassigned Devices.

 

it start out fast and then drops to 44MB/s for the reset of the transfer. is this a normal speed for the array?

image.png.6e903d81958dee89db2ba43715f9f309.png

 

 

But If I transfer files to a HDD disk that's not in the array from the same SSD i get speeds of 166MB/s

image.png.ff17256f53c9965bf67ce583806ee16b.png

 

System Setup:

Supermicro with X8DTI-F Motherboard

SAS825TQ Backplane

9211-8i Controller

2x Xeon X5675 3.06ghz Processors

32GB DDR3 Ram

(3) 10TB Exos X10 - ST10000NM0086 Array drives

(2) 860 EVO SSDs cache drives

 

image.thumb.png.b7af17c1e1b84fa29ad9096a2163de31.png

 

Edited by luker

  • Quote
    8 minutes ago, luker said:

    is this a normal speed for the array

     

  • Quote
    • Author
    42 minutes ago, trurl said:

     

     

    that fixed it, here is the speed after changing to reconstruct write

    image.png.df12c356704d98323606313529e8b924.png

  • Quote

    • Archived

    This topic is now archived and is closed to further replies.

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