| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 837.1 | No! | JULIET::SMITH_P | | Wed Apr 09 1997 11:29 | 12 |
| The answer is no, you cannot expect the Intel Data to be there when
changing to an Alpha. The main reason it the adapter. In the Intel
your are installed on an Adaptec 2944, on Alpha you are connected via a
KZPSA. The real reson is the translation above 1GB is not standard so
adapter use different numbers for the READ CAPACITY command that is
issued. All other things will be OK, such as RAIDSETS, MIRRORSETS,
STRIPESETS. Just in case this is a working situation, backup the data,
reconnect to the Alpha and see if the translation works, if the actual
answer is Yes and everyone is just being conservative, great. If the
answer is realy No, then all is OK since a restore can be done.
Paul
|
| 837.2 | | MSE1::PCOTE | press one now for personal name | Wed Apr 09 1997 18:22 | 17 |
|
> The answer is no, you cannot expect the Intel Data to be there when
Hmmm. I have an NT cluster with a couple of sables and a mix
of 2944Ws and KZPSAs. I've reconfigured my storage (hsz/raid
sets) to use both adapters without incident. No data integrity
problems.
> The real reson is the translation above 1GB is not standard so
> adapter use different numbers for the READ CAPACITY command that is
> issued.
I don't understand this. COuld you elaborate please ?
thanks,
Paul
|
| 837.3 | | MSE1::PCOTE | press one now for personal name | Wed Apr 09 1997 18:27 | 9 |
|
> the blocks out on the disks. I seem to remember that there is something
> different between Alpha/Intel re: disk storage -- that's why we can't have
> mixed (Alpha/Intel) WNT Clusters today.
THis is a bug with NTFS concerning transaction log file recovery.
We (Digital) could support mix architecture clusters if our good
buddies from Microsoft would cooperate. THe bug was reported about
two years ago. Glad to see our alliance is working.
|
| 837.4 | KZPSA and AHA2944 Equal??? | JULIET::SMITH_P | | Thu Apr 10 1997 09:18 | 11 |
| The above 1BG translation problems have existed ever since 1+GB disks
were supported by the various adapter makers. Originally and still
today there is no standard Head, cylinder, sector translation method
available. For example an Adaptec 2944 will not see a partition made
on a Buslogic as the same size. If our KZPSA and the AHA2944 are
identical (which I doubt) then all is goodness. If you are running a
Note .3, if you are runnign and HSZ40 connected to a KZPSA and an
AHA2944, can both use the others partitions? I also question this as
supported.
Paul
|
| 837.5 | | MSE1::PCOTE | press one now for personal name | Thu Apr 10 1997 09:33 | 21 |
|
So, you're saying that if I create a > 1GB partition using an
adaptec controller and then replace the controller with a
buslogic, then I won't be able to see the partition. Is that
about right ?
What if the partition 'sits' behind an HSZ. Does this still
apply ? Note that I've done this many times with kzpsas and
adaptecs and I am able to see existing partitions. I suspect
this works because of the HSZ itself.
Perhaps if I were using an rz28 in a BA box then I'd have
the problem you're describing.
btw, using adaptec controllers on alpha servers connected
to HSZs is NOT officially supported by storageworks as your
elluded too but it seems to work just fine.
Paul
|
| 837.6 | Adapt to Bus vs KZPSA | JULIET::SMITH_P | | Thu Apr 10 1997 14:23 | 7 |
| The answer is no, Adaptec partition information cannot be read by a
Buslogic adapter. If the KZPSA and the Adaptec can work great.
Someone understood this problem and worked out the translation issues.
It's good to here even unsupported configs work as they should.
Paul
|