Reindl Harald wrote:
> Am 12.12.2011 15:13, schrieb Rudi Ahlers:
>> On Mon, Dec 12, 2011 at 3:52 PM, Reindl Harald <h.reindl@xxxxxxxxxxxxx>
>> wrote:
>>> Am 12.12.2011 14:49, schrieb lhecking@xxxxxxxxxxxxxxxxxxxxx:
>>>>
>>>>> 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/12169-304616-241493-241493-241493.html
>
> you have TWO of all components with hotplug
Until you have a fire, or a water line breaks, or.... I worked somewhere I
shouldn't mention about a dozen years ago, that had three H/A clusters...
on either side of a drywall wall, not even fire resistant.
mark
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