data copying suddenly goes slow

[perplex]

ive been using RAID 1 now for a couple of years and my performance is sometimes normal and sometimes super bad.

 

when i use to transfer to my NAS/harddrives i use to get a steady 120mb/s but recently its been between 20-40 mb/s, sometimes i still get full speed. i thought maybe it just needs defragging, but that did nothing

 

am i starting to have an issue with a drive?

 

how can i check to see the issue?

 

 

Specs -

Asus z97 pro

i7 4790k (not overclocked)

Crucial ballistix tactical tracer 4gb x 4

Asus Strix GTX970

Corsair HX750i

m.2 970 pro 512GB 

Asus Xonor STX essence sound card

Windows 10 64bit

 

 

 

[Radium_Angel]

20 minutes ago, perplex said:

NAS

You sure it's not your network causing issues?

 

[perplex]

8 hours ago, Radium_Angel said:

You sure it's not your network causing issues?

 

on my pc i have the raid 1, i tried copying from the raid to an ssd and its the same, so its not the network

[perplex]

so i decided to take everything off, 85% of the files went fine at around 45mb/s far slower than it should be

 

but the last 15% are getting stuck, its like its freezing, then every couple of mins it completes the file, then gets stuck again... this seems abit odd.....

 

ideas?

 

my plan is to take them out of raid, do a full format with WD life guard and also check the SMART scan since it doesnt work while in raid, after that i may use HDtune and do a error scan...

 

this may take a couple of days to complete lol

[perplex]

so i tried pausing it, and it took maybe 1 min to pause, then i unpaused it and it fixed it for a bout 20 seconds, is this come cache buffer issue?

 

im going to cancel it and try again, it was a cut and paste so, should just pick up where i left off

 

EDIT - worked fine for about 10 mins then happened again...

[Radium_Angel]

4 hours ago, perplex said:

so i tried pausing it, and it took maybe 1 min to pause, then i unpaused it and it fixed it for a bout 20 seconds, is this come cache buffer issue?

 

im going to cancel it and try again, it was a cut and paste so, should just pick up where i left off

 

EDIT - worked fine for about 10 mins then happened again...

Maybe the drives are going bad?

 

[FatherChaos]

I would assume the drives are going bad, are all the drives the exactly same? How many drives are in raid 1?

 

[perplex]

2 hours ago, Radium_Angel said:

Maybe the drives are going bad?

 

just did a pass with hdtune on 1 drive and its ok, ill test the other drive now, see what it is in the morning

 

anything i should test it with?

1 hour ago, FatherChaos said:

I would assume the drives are going bad, are all the drives the exactly same? How many drives are in raid 1?

 

2 drives array, the models arnt exact, i think i got the second drive 1 year after the first one, they have been in the array for about 4 years, i think i started to have the issue about 1 year ago of slower speeds and didnt think much of it

 

[Radium_Angel]

14 minutes ago, perplex said:

anything i should test it with?

WDDiags. It's the western digital diag software for their drives. They will know best about their own gear.

Also, oddly enough, check for firmware updates on those drives...

[perplex]

9 hours ago, Radium_Angel said:

WDDiags. It's the western digital diag software for their drives. They will know best about their own gear.

Also, oddly enough, check for firmware updates on those drives...

i believe you cant update the firmware

 

well hdtune said both drives are fine....

 

i just transfered some files to and from and avereged about 75mb/s, so something isnt right but, nothing else i can do, ill tried replug the calbes and see if that does anything, but it didnt

 

this is copying files from the same drive so drive E to drive E, they are 500mb files 10 of them, so nothing small

 

 

[perplex]

well im out of ideas

 

just finished the WD Extended scans, and came back fine...

 

 

[perplex]

well this is my last post if know one knows

 

ive talked to WD, all they said is the drive is getting old, but i dont see how that can effect performance like this

 

everytime i try this test the mb/s goes from 160 to 65 around the same spot, my guess is the cache is gone/going (they arnt small files)

 

does anyone know why the speed would drop at the same spot everytime? or is WD right saying its old so you just cant rewrite as fast anymore, the drive hasnt even been use alot, and it also happens to both drives around the same point. some driver issue? i did the same test to a NVME drive instead of a HD and it worked fine