[DEAD] WD reds 4/8TB $90/$200 via shucking - update, 8TB reds now $180, 4TB deal looks dead.

marcoi

Well-Known Member
Apr 6, 2013
1,394
221
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Gotha Florida
I'm talking about the BB deal case. and yeah my clips are on the back side as well.
I dont have my case near by so i am improvising on the image.

The red area on the pic both top and bottom is where i started with the flat head screwdriver, i get a little started then put the flat automotive pry tool in and leave it there, then i start the other side using the same process. Once both are in there just gently push on pry tool to wide the size of the gap, do i on both sides evenly then the tabs in the back will unclip "pop" out, then its just sliding the unit out in the direction of the blue arrows.

Again that is what worked for me, and i got two perfect cases that way. I didnt try it with a card the first time so that is why i didnt try going in from the back side where the usb is with these sets.


upload_2017-4-28_14-46-42.png
 

golfleep

New Member
Mar 21, 2017
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Got the four 8TB drives I ordered yesterday, no problems getting the drives out with the clips intact thanks to all the info in this thread! Only bummer was that two drives are from China, two from Thailand. Are the reliability issues with the China made drives something that's been documented/tested somewhere?

Got the drives undergoing testing as we speak...
 

marcoi

Well-Known Member
Apr 6, 2013
1,394
221
63
Gotha Florida
Got the four 8TB drives I ordered yesterday, no problems getting the drives out with the clips intact thanks to all the info in this thread! Only bummer was that two drives are from China, two from Thailand. Are the reliability issues with the China made drives something that's been documented/tested somewhere?

Got the drives undergoing testing as we speak...
atleast you got 2, i got all 4 from china, they probably all die at the same time lol :(
 

Richard Wad

Member
Feb 7, 2017
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No idea. I had seven 3 tb drives in this rig before manf. in 2011 that were nowhere near this quick. Individually each 8tb drive was showing about 180-200.
 

StammesOpfer

Active Member
Mar 15, 2016
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180-200 is what I have seen from other reviews on a single disk. When you pack 8tb onto a disk that is a lot of bits moving under the read/write heads on every rotation. The higher the data density the higher the sequential speeds are. Move to random read/writes that density doesn't help as much.
 

Richard Wad

Member
Feb 7, 2017
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I could see 600-700 in those benches since a 1 out of 4 drives is used for parity. But 900+ was really unexpected. I do have all the write back functions and write back policy enabled. No cachecade or bbu installed.
 

fossxplorer

Active Member
Mar 17, 2016
466
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Oslo, Norway
Yeah that's some really impressive write performance that made me think it was all cached result.
According to Understanding RAID Performance at Various Levels - StorageCraft, the write performance of RAID 5 is NX/4. So (4 x 200 ) / 4 = 200.
So i'm very surprised you were able to achieve this level of performance. Hmm, how is this possible without cache?

EDIT: is this the controller Amazon.com: LSI LOGIC MegaRAID SAS 9270-8i Storage Controller LSI00326: Computers & Accessories?
It seems to have 1GB DDRIII cache (1333 MHz) cache. Are you sure it's not playing in here?
 
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Craash

Active Member
Apr 7, 2017
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Look's like just on the 8TB drives, unless I'm missing something on the 4TB.
 

formgen

New Member
Feb 27, 2017
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More drives ordered, at 12 8tb now. I must stop myself unless it goes lower.


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