Mini SAS cable - Which one is correct? - AVS Forum
Forum Jump: 
 
Thread Tools
post #1 of 12 Old 05-03-2013, 07:23 PM - Thread Starter
Senior Member
 
Elpee's Avatar
 
Join Date: Dec 2007
Posts: 392
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Liked: 17
I know this issue is not completely new but didn't see it when I searched around the forum.
I bought 6 mini SAS cables (SFF-8087) for 3 supermicro aoc-mv8 controller cards. I don't have backplane in my Lian Li D8000 case.
When I connected those cables from controller cards to individual hard drives, Windows (and supermicro controller cards) didn't recognise any hdd connected.
A friend of mine told me (over the phone) that I used wrong cables. I got confused here.
How do I know if it's a "forward" or "reverse" SAS breakout cable? They definitely look same, right?
Thank you for your reply.
Elpee is offline  
Sponsored Links
Advertisement
 
post #2 of 12 Old 05-03-2013, 08:28 PM
AVS Special Member
 
JerryW's Avatar
 
Join Date: Aug 2001
Location: Location, Location
Posts: 1,023
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Liked: 33
They look identical and this is one of the most annoying secret "gotchas" in modern computers.

Think of it like this:

SAS controller --> sata drives == forward breakout
sata controllers --> SAS backplane == reverse breakout

Sometimes the cable will have labeling on the ends - if the SAS side is labelled "controller" then it is a "forward breakout" cable.

Copyright is not property, it is merely a temporary loan from the public domain.
JerryW is offline  
post #3 of 12 Old 05-04-2013, 03:53 AM - Thread Starter
Senior Member
 
Elpee's Avatar
 
Join Date: Dec 2007
Posts: 392
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Liked: 17
Any recommendation for correct cables available in the market now to make sure I won't buy wrong ones again? biggrin.gif
Thank you.
Elpee is offline  
post #4 of 12 Old 05-04-2013, 05:20 AM
AVS Special Member
 
captain_video's Avatar
 
Join Date: Jan 2002
Location: Ellicott City, MD
Posts: 3,618
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 99 Post(s)
Liked: 149
Check monoprice.com. They sell forward breakout cables at a low price. I have the same controller and use the Monoprice cables in my server.
captain_video is offline  
post #5 of 12 Old 05-05-2013, 04:20 AM
Advanced Member
 
jmallory's Avatar
 
Join Date: Jun 2005
Location: Essexville, MI
Posts: 621
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 11
+1 on the Monoprice forward breakout cable. I have two of them in my new home server running an icy dock 6-in-1 drive cage in my N54L. Work like a champ.

-- Jim
jmallory is offline  
post #6 of 12 Old 05-05-2013, 01:52 PM
Advanced Member
 
Dropkick Murphy's Avatar
 
Join Date: Dec 2008
Posts: 606
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Liked: 64
Dropkick Murphy is offline  
post #7 of 12 Old 05-06-2013, 08:40 AM - Thread Starter
Senior Member
 
Elpee's Avatar
 
Join Date: Dec 2007
Posts: 392
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Liked: 17
Thanks, guys. Just ordered 6 SAS forward breakout cables for my 3 SAS controller cards from monoprice as you told me with a coupon of 10% off. biggrin.gif
Elpee is offline  
post #8 of 12 Old 05-06-2013, 09:39 AM
AVS Special Member
 
amarshonarbangla's Avatar
 
Join Date: Mar 2011
Posts: 1,239
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 39
Isn't a reverse cable required for SAS controller -> 4 SATA drives?
amarshonarbangla is offline  
post #9 of 12 Old 05-06-2013, 09:45 AM
AVS Special Member
 
Dark_Slayer's Avatar
 
Join Date: May 2012
Posts: 2,585
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 203 Post(s)
Liked: 309
Quote:
Originally Posted by amarshonarbangla View Post

Isn't a reverse cable required for SAS controller -> 4 SATA drives?

Vice Versa
Quote:
This is a Forward Breakout cable, meaning that it is intended to connect to a host/controller on the SAS end and to drives on the SATA end.
Dark_Slayer is offline  
post #10 of 12 Old 05-07-2013, 06:02 AM
AVS Addicted Member
 
Mfusick's Avatar
 
Join Date: Aug 2002
Location: Western MA
Posts: 23,496
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 182 Post(s)
Liked: 915
Quote:
Originally Posted by amarshonarbangla View Post

Isn't a reverse cable required for SAS controller -> 4 SATA drives?


I used a reverse to connect four SATA ports on my mobo to the SAS port on my norco ( 4 drives / one row)

-

"Too much is almost enough. Anything in life worth doing is worth overdoing. Moderation is for cowards."
Mfusick is online now  
post #11 of 12 Old 05-07-2013, 06:54 AM
AVS Special Member
 
amarshonarbangla's Avatar
 
Join Date: Mar 2011
Posts: 1,239
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 39
Quote:
Originally Posted by Mfusick View Post

I used a reverse to connect four SATA ports on my mobo to the SAS port on my norco ( 4 drives / one row)

Aah. I was confused and thought that you were using the reverse cable with your M1015. Thanks for clearing that up.
amarshonarbangla is offline  
post #12 of 12 Old 05-07-2013, 08:52 AM - Thread Starter
Senior Member
 
Elpee's Avatar
 
Join Date: Dec 2007
Posts: 392
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Liked: 17
Yes, those cables are so confused and that's why I bought wrong SAS cables. Trying to contact CS to have my cables returned. mad.gif
Elpee is offline  
Reply Home Theater Computers

User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off