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Buy an extra SATA controller or use SAS to SATA adapter?

has 6 of these SAS connectors.
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Are you sure about that? That would be a 24 port SAS on the motherboard. I have never seen that. Although I would pay $800 for an Intel motherboard lga1155 or $1000 for an lga2011 version with 6 x SFF-8087 or 24 total SAS ports.. That would be an excellent start for a new linux or zfs raid server at work.

Should I use the item from the above link, if so, where is the draw back using a cable that converts SAS to 4 x SATA?
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This cable converts a 4 port minisas SFF-8087 (motherboard / controller side) to 4 SATA ports that will connect to SATA drives. This is also called a forward break out cable.
 
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It's a HP Z800 professional workstation. If you look under HP, you can read it on the PDF file under professional workstation

But back to my original question, will it work? Is there any draw back?
 
That cable will most likely not work besides the fact that every one of the newegg reviews for that product replied that the cable was DOA I do not believe you have 6 x SFF-8087 ports on your motherboard supporting directly connecting 24 SAS/SATA devices. Although the cable could have been a reverse cable it is unclear from the documentation.

As for using SATA drives with SAS. This works well. I use over 100 SAS ports here at work with desktop class SATA drives.

If you look under HP, you can read it on the PDF file under professional workstation
Click to expand...

I am on company time maybe later this weekend I will lookup the pdf.
 
According to the PDF, your motherboard has a single integrated LSI 1068e, which would provide a maximum of 8 SAS links. I cannot find any information in the HP supplied documentation as to what type of headers are used, but from an image found online it appears you have 6x SATA type connectors attached to the intel ICH chipset, and 8x SATA type connectors attached to the LSI 1068e.

What exactly are you trying to accomplish? we may be able to point you in the right direction.
 
Dalfo002 said:
According to the PDF, your motherboard has a single integrated LSI 1068e, which would provide a maximum of 8 SAS links. I cannot find any information in the HP supplied documentation as to what type of headers are used, but from an image found online it appears you have 6x SATA type connectors attached to the intel ICH chipset, and 8x SATA type connectors attached to the LSI 1068e.
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Which I believe means just use normal SATA cables (I have only used SAS cards with SFF_8484 or SFF_8087 connectors).
 
Just keep in mind the limitations of the 1068e chipset; It has been stated that the 1068e cannot be used with drives larger than 2TB, though i have not tested this personally. This should not be too great an issue as you should be able to migrate smaller disks to the 1068e and use larger disks on the ICH connections.
 
Dalfo002 said:
According to the PDF, your motherboard has a single integrated LSI 1068e, which would provide a maximum of 8 SAS links. I cannot find any information in the HP supplied documentation as to what type of headers are used, but from an image found online it appears you have 6x SATA type connectors attached to the intel ICH chipset, and 8x SATA type connectors attached to the LSI 1068e.

What exactly are you trying to accomplish? we may be able to point you in the right direction.
Click to expand...

I already used up all those 6 x SATA ports. Now, it's just a matter of using those SAS port as SATA if it works
 
drescherjm said:
As for using SATA drives with SAS. This works well. I use over 100 SAS ports here at work with desktop class SATA drives.
Click to expand...

if the cable doesn't work, no biggie, I'll find something else. But when you connect SAS port to SATA drive, and I am aiming at SSD drive, did you notice any disadvantage, draw back, data loss, speed loss or any other inconvenience? Please let us know
 
Happy Hopping said:
But when you connect SAS port to SATA drive, and I am aiming at SSD drive, did you notice any disadvantage, draw back, data loss, speed loss or any other inconvenience? Please let us know
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Seems to me the SAS controller would be the major variable.

If his controller isn't the same as yours the results won't reflect your situation.
 
The LSI 1068e is a very common SAS chip. That is one of the ones I am using at work. However I am not using it with SSDs. That is besides the fact that the best upgrade for this would be other LSI SAS cards..
 
drescherjm said:
The LSI 1068e is a very common SAS chip. That is one of the ones I am using at work. However I am not using it with SSDs. That is besides the fact that the best upgrade for this would be other LSI SAS cards..
Click to expand...
I think the whole deal here is about the SAS controller's specs and how it compares to the Intel SATA controller in use.

I have no experience with SAS but somekinda performance comparisions should be out there.:)
 
drescherjm said:
I thought you have a LSI 92XX with fastpath?
Click to expand...
Yep, a 9260-4i.

I don't know what chip is in it/how it's configured or how it would perform in his situation.

There's nothing I can see for a specific correlation. I just know how my card affects the situation.

His MB is SATA2 and my card is SATA3 but who knows if that makes a difference?
 
There is no TRIM over SAS keep that in mind.
Also, the intel tool cannot optimize the drive either when on SAS.
 
So the consensus seems to be this:
1. you do not need any special cabling, standard SATA data cables will be just fine.
2. migrate spinning disks less than or equal to 2TB off of the ICH controller and onto the 1068e
3. Use the intel chipset sata ports (with AHCI enabled) for SSD's
 
Old Hippie said:
I have no experience with SAS but somekinda performance comparisions should be out there.:)
Click to expand...

I'm hoping for an article explaining this alternative, and its pros and cons. As SAS is Serial Attach SCSI, and SCSI is meant for multi-read, multi-write

SATA is time slicing on single read, single write, so I am surprise that you can use a SAS port on a SATA SSD
 
I saw a picture of an opened Z800, it has 8 white SATA ports in a line, so you don't need any kind of SAS cable.

Follow Dalfo002 advice.

SAS follows the SCSI command set and is destined to professional use, but aside from that it's not working like parallel SCSI.
 
Aesma said:
I saw a picture of an opened Z800, it has 8 white SATA ports in a line, so you don't need any kind of SAS cable.

Follow Dalfo002 advice.

SAS follows the SCSI command set and is destined to professional use, but aside from that it's not working like parallel SCSI.
Click to expand...

They are actually 8 white SAS port in a row.

The SATA port are 6 black color port. Having said that, as long as I can use SATA SSD on those ports, then you're right, I don't need any fancy cables
 
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