Solved

Mission Critical system

Posted on 2007-11-25
2
620 Views
Last Modified: 2013-12-02
Hi,

I received my F-250 NetApp storage device, I am very new to this system, and I never used them before. I have the following questions and your help is much appreciated:

1- I will host many applications file to the netapp (oracle database files, control files, windows users files, linux files), the guy who installed the netapp for us used one aggregate with RAID4, one spare disk and one parity. Is this setup good for my case?
2- Which is better for Oracle, NFS mount or Iscsi? I am running RedHat 4E.
3- What is the best practice to use snapshots? Any documenation? What is the best size?
4- Does the snapshot make an exact copy of the volume or only delta version? Is 20% enough?
5- How I can configure multipath for linux? Which means I have my oracle database files hosted in netapp volume, I need to be able to reach these files from different paths, in case on path went down I can go to other path (system will automatically)? how I can do that?

6- Can I share a lun with multiple Windows servers using ISCSI?

7- Why should I get Snap Manger for Oracle since I have snapshot?

Thanks
Rami
0
Comment
Question by:nammari
2 Comments
 
LVL 40

Expert Comment

by:omarfarid
ID: 20346360
0
 
LVL 21

Accepted Solution

by:
robocat earned 500 total points
ID: 20348758

1. How many disks are there in the system ? Depending on this, RAID-DP may be a better solution that RAID4, because RAID-DP has a much higher fault tolerance, but it requires 2 parity disks.

2. You should definetely choose for Oracle on NFS, this will guarantee better performance and is more fault tolerant than iSCSI.

3. You can take snapshots every hour, day or week and keep up to 255 snapshots online. This doesn't affect performance but this will require more storage. We typically keep 1 week of hourly snapshots online, 30 days of daily snapshots and 3 to 12 months of weekly snapshots depending on the application, but you can do whatever you want.

You'll find background documentation on www.netapp.com->library->technical reports and the manuals on the webinterface of the FAS.

4. Snapshots on a NetApp don't make a copy of the data, but store only changed blocks. The "snapshot reserve" is only a placekeeper to make sure you don't run out of place to take snapshots, but you can set this to zero without any serious consequences.

5. If you use NFS, all you need to do is build a fault tolerant network connection, e.g. by using network adapter teaming on your server and virtual interfaces (= also teaming) on the Netapp. Configure your switches for teaming and failover.

6. LUNs can only be "shared" in very special circumstances, e.g. for clustering, because by nature a LUN is dedicated to one server only. If you want to share files between Windows servers, use the NetApp CIFS to export file shares to the servers.

7. To create consistent snapshots, you'll need to do some scripting on your host (see the Whitepapers for Oracle on Netapp) . If you're not comfortable with this, you can buy Snap manager for Oracle, which manages the taking and restoring of snapshots.





0

Featured Post

Why spend so long doing email signature updates?

Do you spend loads of your time carrying out email signature updates? Not very interesting are they? Don’t let signature updates get you down. Let Exclaimer Cloud - Signatures for Office 365 make managing email signatures a breeze.

Join & Write a Comment

By default, Carbonite Server Backup manages your encryption key for you using Advanced Encryption Standard (AES) 128-bit encryption. If you choose to manage your private encryption key, your backups will be encrypted using AES 256-bit encryption.
This article is an update and follow-up of my previous article:   Storage 101: common concepts in the IT enterprise storage This time, I expand on more frequently used storage concepts.
This tutorial will walk an individual through the steps necessary to enable the VMware\Hyper-V licensed feature of Backup Exec 2012. In addition, how to add a VMware server and configure a backup job. The first step is to acquire the necessary licen…
This tutorial will walk an individual through the steps necessary to install and configure the Windows Server Backup Utility. Directly connect an external storage device such as a USB drive, or CD\DVD burner: If the device is a USB drive, ensure i…

747 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

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now