This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


Re: [Xen-users] iscsi vs nfs for xen VMs

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] iscsi vs nfs for xen VMs
From: Christian Zoffoli <czoffoli@xxxxxxxxxxx>
Date: Thu, 27 Jan 2011 00:53:19 +0100
Delivery-date: Wed, 26 Jan 2011 15:55:05 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <AANLkTimcGPjExj8Uha2Cki_uMF-eyONwZi5gGUins4AG@xxxxxxxxxxxxxx>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References: <994429490908070648s69eed40eua19efc43c3eb85a7@xxxxxxxxxxxxxx> <4D3FF9BC.40601@xxxxxxxxxxx> <sig.4007da378a.AANLkTiku=-RhcyUZVHmwnJ18+Az6Fk5CxdEjKdHQKJ54@xxxxxxxxxxxxxx> <4D4032C7.9000003@xxxxxxxxxxx> <AANLkTin+K5G10_03qLRT_yqCRELu339roLEHy1bVFoqR@xxxxxxxxxxxxxx> <4D40424B.4090808@xxxxxxxxxxx> <AANLkTinRdUNC-4PNsF=sKtUvm7SBRc=-LnYX9S8rYTHG@xxxxxxxxxxxxxx> <4D4064CD.8010005@xxxxxxxxxxx> <AEC6C66638C05B468B556EA548C1A77D01BB9292@trantor> <4D409BC4.6010800@xxxxxxxxxxx> <AANLkTimcGPjExj8Uha2Cki_uMF-eyONwZi5gGUins4AG@xxxxxxxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20110105 Lightning/1.0b2 Thunderbird/3.1.7
Il 26/01/2011 23:33, Javier Guerra Giraldez ha scritto:
> On Wed, Jan 26, 2011 at 5:10 PM, Christian Zoffoli <czoffoli@xxxxxxxxxxx> 
> wrote:
>> Every new entry level storage is based on std hardware without any hw
>> acceleration ...for example EMC AX storages are simply xeon servers.
> TCP offloading is quite standard on most GbE chips.  even iSCSI
> offloading is pretty common.  I'd be surprised if EMC wouldn't take
> advantage of that.

also hardware raid6 is very common today but in entry level storages you
can find only software raid6 and the performances are terrible.

in other words don't trust so much the entry level storages of many vendors.

to test if your storage is good or not you can use simply compare the
IOPS of the formulas with real results ...and many times you can find
that numbers are very different.


Xen-users mailing list