Open iSCSI Performance on IBM

Hi All... Sorry, the following could be a little bit off topic... Does any one has an idea of what is the expected performance for a IBM DS 3300 system connected via open iSCSI? Using a RAID 1 with 2 disks, I got the following numbers: Sequential Write: [r...@core12 ~]# dd if=/dev/zero of=/ap

Re: Open iSCSI Performance on IBM

> What is the write performance if you do RAID0 instead of RAID1? Basically 30MB/s, i.e., twice the value I get in a RAID1. > Also, you can use 'direct' I/O flag with "dd" command. I'll try using this one! Thanks and cheers Goncalo --~--~-~--~~~---~--~~ You re

Re: Open iSCSI Performance on IBM

Basically, I want to have an idea of the performance other admins are getting... The hardware is not so important since I'm interested in the order of magnitude of the performance rates... On Apr 9, 10:22 am, Gonçalo Borges wrote: > > What is the write performance if you do RAID0 instead of RAID

Re: Open iSCSI Performance on IBM

What is the write performance if you do RAID0 instead of RAID1? I don't have that hardware and I can't verify anything though. Also, you can use 'direct' I/O flag with "dd" command. Thanks, Malahal. Gon?alo Borges [borges.gonc...@gmail.com] wrote: > > Hi All... > > Sorry, the following could b

iscsiadm: initiator reported error (15 - already exists)

There was a previous discussion on this error (but I am unable to continue that thread) http://groups.google.com/group/open-iscsi/browse_thread/thread/47404136d4872440 Is the bug fixed in 870.3 ? Thanks --~--~-~--~~~---~--~~ You received this message because you

Re: Open iSCSI Performance on IBM

Gonçalo Borges wrote: > Hi All... > > Sorry, the following could be a little bit off topic... > > Does any one has an idea of what is the expected performance for a IBM > DS 3300 system connected via open iSCSI? Using a RAID 1 with 2 disks, > I got the following numbers: > Is /apoio04/b1 a scs

Re: iscsiadm: initiator reported error (15 - already exists)

solidguy wrote: > There was a previous discussion on this error (but I am unable to > continue that thread) > > http://groups.google.com/group/open-iscsi/browse_thread/thread/47404136d4872440 > > Is the bug fixed in 870.3 ? > No. --~--~-~--~~~---~--~~ You recei

Data Digest always None during iBFT based boot

Hi, Data digest is always offered as None, even for iBFT based boot sessions started by iscsistart. I was trying to boot RHEL5 U3, and it installs and boots fine to the iSCSI LUN, with Header digest on, and Data digest off. But if the Target always requires Data digests on, the login will fail