Am 12.12.2011 15:13, schrieb Rudi Ahlers:
On Mon, Dec 12, 2011 at 3:52 PM, Reindl Harald h.reindl@thelounge.net wrote:
Am 12.12.2011 14:49, schrieb lhecking@users.sourceforge.net:
Outage is one thing, but having the disk volumes disappear mid-transaction can be detrimental to a file system's health.
To get this back on-topic and closer to the OP's requests, are there any particular iscsi settings one should consider to increase resiliency and minimise the impact of e.g. a rebooting switch? timeout settings? The big disadvantage of iscsi is that you add another layer that can fail (compared to having virtual machine images on a local disk).
you should always have two links to your iSCSI device and two different switches so that it does not matter if one switch dies or reboots
And then you still have the iSCSI applicance / server to worry about. It can fail as well. Even with redundancy PSU's it could fail - the RAM, CPU, motherboard, controller card, expensive RAID card, etc can fail as well.
get the right hardware and you do not have this problem http://h10010.www1.hp.com/wwpc/us/en/sm/WF04a/12169-304616-241493-241493-241...
you have TWO of all components with hotplug