Faster drives for parity or not?


Recommended Posts

I currently have 4x WD Red drives, 1 acting as parity and the 3 other as data. I'm planning to double up that array with a total of 8x4TB, probably going from 1 to 2 parity drives. I will buy more WD Red drives for my data while the CMR drives are still available (WD40EFRX, not WD40EFAX). At the same time, I was wondering if I would be better putting the parity on 7200rpm drives? Or just "better" drives in general? I was thinking WD Red Pro or WD Gold. 

 

The way I see it, and correct me if I'm wrong... every time I write to a drive, I'm also writing to the parity drive... every time I read from a drive, I'm only reading from that drive. So the parity drives get less read overall (except for parity checks) but more writes than any other single drive. That's until a drive fails, in that case every drive is stressed on every read to calculate the missing bits.

Link to comment

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.