getting dropped under heavy load of iSCSI LUNS

Hello


I found a few forums on this... but not a response yet.

I have a Hp Lefthand 4300 cluster for the storage, connected to 2 x DL360 G7 ESXi 4.1 via iSCSI (Hp edition) guests and a Procurve gigabit switch dedicated for iSCSI. Whenever I run a backup down the LUN for a few seconds (usually 5, however it was as much a minute).

Things, I tried...

Updated software from the left to the latest version

Updated all the HP firmware on the hosts

Update to the latest drivers HP Boradcom on ESXi hosts

Changed the timeout 1400 (esxcfg-advcfg - s VMFS3/14000/HBTokenTimeout)

These servers come into production in the new year... Please please can someone help me solve this problem?

I call open with Vmware and HP, nor was particually useful, Vmware has suggested I called HP and updated card drivers NETWORK, HP simply said that it was a network problem and closed the call... Thank you!

I intalled surveillance under tension and can not see all ports dropped etc. All the equipment is new and the LAN cables are Cat6.

Don't really know where to go from here!

The exact error I get is...

Lost access to the volume (4cf7b1ac-5fdcc218-5c2e-1cc1dee48e30)
S1 - SP1OS) because of connectivity issues. Recovery attempt is in
progress and results will be announced soon.
Info
2010-12-27 01:06:06
192.168.32.2

Please help me!

Kind regards

Kris

We have recently changed some hosts who also had problems on a heavy load with iscsi San connections. We used hwiscsi (TOE), Broadcom adapters (was a recommendation from different vendors) before and this has recently changed to swiscsi (with Jumbo).

No. dropped / resets on connections over this host. And a much faster flow of vm (tested with IOmeter).

We also saw a much beter performance (throughput) on hosts with NIC configured to swiscsi on comparisation of hosts with an iSCSI HBAS (Qlogic 4062).

We use VMware ESXi 4.1 (latest patches).

Problems with broadcom TOE (hwiscsi) on HP DL360G6 also on Dell M610 blades.

SAN: EqualLogic PS5000 PS6000, PS5500, PS6500,

Switches: Juniper weer Jumbo Frames and flow control.

So I recommend you also use swiscsi on these broadcom adapters.

If you are looking for broadcom issues with vmware, find others with similar experiences.

Tags: VMware

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