Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

HP DL380 G7 (sas expander & cage)

Posted on 2012-04-12
5
Medium Priority
?
2,884 Views
Last Modified: 2012-04-16
Have 8x HDD's at present, looking at the cage and sas expander.  Will this give me a 16x HDD single array or an additional/second array?

Any performance issues to worry about?

Thanks
0
Comment
Question by:CHI-LTD
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
5 Comments
 
LVL 56

Assisted Solution

by:andyalder
andyalder earned 2000 total points
ID: 37837872
If you use the cage plus expander you can have all 16 disks in one array, if you use two RAID controllers you can have 2 * 8 disk arrays. More performance in total with two controllers since you can have twice as much cache, but the 16 disk array will be faster than an 8 disk array of course.

Make sure all cables to the backplanes are the same length and don't burn yourself on the heatsink on the expander, for a few dollars more you can but the 6" SAS cables to go from the motherboard to the expander - much tidier than the long cables you will have supplied.
0
 
LVL 1

Author Comment

by:CHI-LTD
ID: 37837907
So, to confirm, there is a SAS card.  On this card is there a singles SAS cable going from the card to the cage?
Thanks
0
 
LVL 56

Assisted Solution

by:andyalder
andyalder earned 2000 total points
ID: 37837940
A pair of SAS cables from motherboard to SAS expander, two pairs of SAS cables from expander to backplanes. The SAS expander plugs into the PCIe bus but only for power, it doesn't use PCIe data lines.

There are some links in http://www.experts-exchange.com/Hardware/Servers/Q_27669479.html worth looking at.
0
 
LVL 1

Author Comment

by:CHI-LTD
ID: 37838019
Cheers.  I assume cables come with the case or card?
0
 
LVL 56

Accepted Solution

by:
andyalder earned 2000 total points
ID: 37838112
Yes, if I remember correctly two pairs of cables come with the card and one pair with the cage, might be the other way around, there are enough anyway. You don't get short SAS cables though so you either have to use 28" cables from motherboard to card unless you buy a couple of 496012-B21 8" SAS cables. Our sales people don't buy the additional 8" cables, it's quite possible to cable up without but it's messy.
0

Featured Post

Does Your Cloud Backup Use Blockchain Technology?

Blockchain technology has already revolutionized finance thanks to Bitcoin. Now it's disrupting other areas, including the realm of data protection. Learn how blockchain is now being used to authenticate backup files and keep them safe from hackers.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Finding original email is quite difficult due to their duplicates. From this article, you will come to know why multiple duplicates of same emails appear and how to delete duplicate emails from Outlook securely and instantly while vital emails remai…
Backups and Disaster RecoveryIn this post, we’ll look at strategies for backups and disaster recovery.
This video Micro Tutorial explains how to clone a hard drive using a commercial software product for Windows systems called Casper from Future Systems Solutions (FSS). Cloning makes an exact, complete copy of one hard disk drive (HDD) onto another d…
This video teaches viewers how to encrypt an external drive that requires a password to read and edit the drive. All tasks are done in Disk Utility. Plug in the external drive you wish to encrypt: Make sure all previous data on the drive has been …

722 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question