[2 days left] What’s wrong with your cloud strategy? Learn why multicloud solutions matter with Nimble Storage.Register Now

x
?
Solved

HP DL360 G7's (local storage)

Posted on 2012-04-03
7
Medium Priority
?
668 Views
Last Modified: 2012-04-03
Hi

Budgeting for the above, we are looking at:

additional caddy x8 600gb HDD's (16 HDD in total)
or
caddy - (16x 300gb).  

According to on-line calculator the RAID 6 will be 3600 & 4200 respectively.

Correct?
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
  • 4
  • 3
7 Comments
 
LVL 56

Assisted Solution

by:andyalder
andyalder earned 2000 total points
ID: 37799847
Do you mean L380 G7, DL360 G7 is only 1U an takes 4 SFF disks standard, 8 with 2nd backplane.

For RAID 6 just take off 2 from total disks and multiply by size, (16-2)*300 = 4200 etc.
0
 
LVL 1

Author Comment

by:CHI-LTD
ID: 37799859
yes, 380 - sorry.
0
 
LVL 56

Accepted Solution

by:
andyalder earned 2000 total points
ID: 37799922
Then your calculations are correct for RAID 6 assuming you use the SAS expander so that both backplanes are on the same controller, I prefer to have two separate controllers so there's twice as much cache and the cabling's easier but that does limit you to two arrays of 8 disks. If you do use the expander then get the short SAS cables, it can be done without but there's a lot of cable to get in the way with the long ones going from controller to expander.

Bear in mind the 6 I/Os per write penalty for RAID 6 if it can't write a full width stripe so the more cache the better that will be.
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 1

Author Comment

by:CHI-LTD
ID: 37800091
Sorry i meant 8x 600gb  raid6  =3.6tb
and
16x 300gb raid6 = 4.2tb

16x 600 raid6 = 8.4tb.

yes, we'd go for sas expander.
Which raid woudl you go for this then?  I'd like ability of 2x disk failures but performance also.  Raid5 with spare?
0
 
LVL 56

Assisted Solution

by:andyalder
andyalder earned 2000 total points
ID: 37800141
RAID 10 if you can afford it, it won't tolerate both disks in a mirror failing but short of that you can lose several disks without suffering failure or performance dedgradation. Really depends on how write intensive your application is and how random the data is. I'd avoid RAID 5, although only 4 I/Os per write performance with a disk down is often unusable.
0
 
LVL 1

Author Comment

by:CHI-LTD
ID: 37800153
thanks, but will lose valuable space with 1+0
0
 
LVL 56

Expert Comment

by:andyalder
ID: 37800210
I'd stick to RAID 6 then.
0

Featured Post

Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

Question has a verified solution.

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

When we purchase storage, we typically are advertised storage of 500GB, 1TB, 2TB and so on. However, when you actually install it into your computer, your 500GB HDD will actually show up as 465GB. Why? It has to do with the way people and computers…
New style of hardware planning for Microsoft Exchange server.
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 tutorial will walk an individual through the process of installing the necessary services and then configuring a Windows Server 2012 system as an iSCSI target. To install the necessary roles, go to Server Manager, and select Add Roles and Featu…

656 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