Solved

what is best speed backup iSCSI(local disk) or NFS - both same raid and lan speed

Posted on 2012-03-13
8
448 Views
Last Modified: 2012-03-28
And is it anywhere near LTO4 in spped
0
Comment
Question by:philb19
[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
  • 2
  • +1
8 Comments
 
LVL 47

Accepted Solution

by:
dlethe earned 500 total points
ID: 37715123
iSCSI can be configured to move much more data in any given amount of time then NFS.  Heck, I've got a system here that I can pump over 2000MB/sec using iSCSI.

Granted I have 10GigE and SSDs, but nevertheless it is doable, and a poor little LTO4 could never keep up with that.  So yes, you can configure iSCSI to outperform an LTO4 if you have the right equipment.
0
 

Author Comment

by:philb19
ID: 37715171
awesome - what am i looking at $ for ssd attached iscsi storage to a windows symantec backup exec - around 3-7 tb - we have netapp who have ssd shelves - but pricey id say

could i attach ssd drive space another cheaper way  for just daily backups - and continue tape for weekly


also - so if i use iscsi to the netapp (symantec server seeing as local disk - disk type sas drive) - that will beat nfs easy ?
0
 
LVL 47

Expert Comment

by:dlethe
ID: 37715431
In your situation, bottleneck is most likely going to be the source, not the destination.
You can easily get a system configured for around $1500

First O/S should be openindiana (a variation of open solaris).  I would configure it by purchasing
  * used server, dual core is plenty, 8GB is fine, more MAY be better, it depends, PCIe a must
  * 3 cheapest SSDs you can find. I bought a pair of 32GB torx at fry's this week for a little over $100 after rebate
  * Use a LSI JBOD (not RAID) controller.
  * Get some 2TB SATA drives.    

I would configure the storage pool as:
 2 x SSDs (configure for mirrored write intent log)
 1 x SSD for read cache (Actually the SSD for read cache can be a premium one, faster is better, up to a point, and you can add more SSDs for read cache and more RAM, but this can be done at any time and you can experiment)
 then stripe the 2TB or 3TB disks into RAID1 arrays.   So if you need 6TB of usable data, then I would configure as 3 x 2TB RAID-1 pairs.

Then tell zfs to present this as a iSCSI target.  You can set up and run the computer on a USB stick, or what I use is a pair of old laptop drives that I mirror and plug into the ATA ports.

You should be able to sustain several hundred MB a second with this setup.

(Note SAS drives will give better performance, but zfs tolerates SATA disks, even desktop class SATA drives.  The O/S does full sync on writes, so no risk of data loss except with multiple drive failures.   This can scale to 1GB/sec pretty easily by adding more disks, and getting 10GigE or fibre channel, and adding more RAM.
0
How Do You Stack Up Against Your Peers?

With today’s modern enterprise so dependent on digital infrastructures, the impact of major incidents has increased dramatically. Grab the report now to gain insight into how your organization ranks against your peers and learn best-in-class strategies to resolve incidents.

 
LVL 55

Expert Comment

by:andyalder
ID: 37717040
Unless you use 10Gb ethernet or several 1Gb links teamed then LTO4 at 240MB/s compressed or even native 120MB/s is going to be faster than gigabit Ethernet once you've taken the iSCSI overhead into account even if you're using jumbo frames.
0
 

Author Comment

by:philb19
ID: 37718159
Thanks - how much is a 10gb switch - cisco - or cheaper brand?
0
 
LVL 21

Expert Comment

by:SelfGovern
ID: 37721924
You'll need a 10Gb switch, and 10Gb NICs in each computer, and 10Gb GBICs, and cables suitable for 10Gb speeds... I don't know prices, but it is not going to be an inexpensive upgrade.
0
 
LVL 55

Expert Comment

by:andyalder
ID: 37722008
Procurve 6600 24 * 10Gb ports is about $12,000. But they might not need a switch assuming you can use a crossover cable* if only 2 ports needed.

* I know it isn't quite like a 1GB crossover but I think you can join two computers with a SFP+ cable plus NICs.
0
 

Author Closing Comment

by:philb19
ID: 37775303
besdt
0

Featured Post

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!

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
SED solid state drive that can be used with XP pro 2 69
RAID 5 with Three Hard Drives 26 123
Dell R730 NVMe Raid Options 4 141
Recovery from RAID 1 vs RAID 10 4 43
Moving your enterprise fax infrastructure from in-house fax machines and servers to the cloud makes sense — from both an efficiency and productivity standpoint. But does migrating to a cloud fax solution mean you will no longer be able to send or re…
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 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…
This tutorial will show how to configure a new Backup Exec 2012 server and move an existing database to that server with the use of the BEUtility. Install Backup Exec 2012 on the new server and apply all of the latest hotfixes and service packs. The…

738 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