Solved

Network raid calculation on storevirtual P4330

Posted on 2015-01-09
1
679 Views
Last Modified: 2016-12-08
I've 2 node of storevirtual P4330 with 8 disk of 900GB. Each storage by default comes with raid 5 and 1 logical array. I configured a network raid 10 for the storage.

according to the formula on this site: http://h20564.www2.hp.com/hpsc/doc/public/display?docId=mmr_kc-0108305

My raw space would be 2X8X900 = 14400

And hardware raid should be R5_CS = NN *(N –(1*NL))*Ds

NN = number of nodes
N= number of disk
NL = Number of logical array
DS = Disk space

12600= 2*(8-(1*1))*900

My hardware raid space would be 12600GB

For the network raid space I should be 6300GB  (basically is just divide by 2)

But in reality, My hardware raid space is 11388GB and the network raid divide by 2 is 5694GB

Anyone can enlighten me how storevirtual really calculates it space?
0
Comment
Question by:sweehan
[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
1 Comment
 
LVL 19

Accepted Solution

by:
strivoli earned 500 total points
ID: 40540163
A 900GB HDD is not REALLY 900GB. Vendors sell 900GB as 900,000,000,000 Bytes which results in 838GB. This is the main reason.
0

Featured Post

Free eBook: Backup on AWS

Everything you need to know about backup and disaster recovery with AWS, for FREE!

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
VMware lost connectivity to datastore 15 1,100
Windows Server failure RAID 31 103
What are the purpose of ESXi local storage usage ? 5 115
VMFS datastore running very slow ? 18 81
The business world is becoming increasingly integrated with tech. It’s not just for a select few anymore — but what about if you have a small business? It may be easier than you think to integrate technology into your small business, and it’s likely…
Many businesses neglect disaster recovery and treat it as an after-thought. I can tell you first hand that data will be lost, hard drives die, servers will be hacked, and careless (or malicious) employees can ruin your data.
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…
This Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…

739 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