>> Does zLinux support non-IBM disk array storage?
>If you mean FCP-connected disk, yes, with caveats. There are "officially
supported" vendors >where the vendor has paid IBM to do testing and
certification. In general, most >FCP-connected disk "just works",
especially if you put it behind a SAN switch that IBM does >"officially"
support. That isolates the disk from the Z, and as long as the SAN switch
is >something IBM has tested, it pretty much works fine.
The disk solution presented to me was a server/controller with a 36TB disk
array behind it. The server/controller would be connected via the OSA
Express3 10GbE.
>> The background:
>> We're currently running a Tivoli Storage Manager (TSM) server 5.5 on
zOS,
>> and have found out that TSM 5.5 is the last version on zOS. IBM does
not
>> plan to support TSM v6 on zOS.
>> So we need to move our TSM server. IBM has a migration path for TSM
v5.5
>> to TSM v6 onto either a system running AIX or zLinux.
>> Since we run zLinux, we're going with the zLinux option.
>> To decrease the storage cost and help with out disaster recovery, we
are
>> looking at moving the TSM storage pools to a non-zSeries storage
medium.
>They did tell you that you won't be able to use your current
channel-attached tape drives, >right?
>TSM on Linux doesn't support channel-attached tape.
Yes, we know the channel attached tape drives aren't available in zLinux.
We are evaluating keeping all TSM storage pool data on disk.
>The Linux TSM code is far less efficient than the z/OS (and z/VM) TSM
code was. Expect a >fair increase in CPU usage.
I saw that in a pdf sent by TSM support. The pdf says:
"IBM does not plan to support TSM v6 server on z/OS
Why?
Increase cycle usage for v6 compared to v5, for the same workload
New TSM features such as server-side deduplication could drive
even higher
processor utilization."
Our only upgrade option is to either AIX or zLinux. We'll be looking at
'TSM for zOS Media' to access our current tape pools. I need to do more
research on how that new product works. We don't have AIX and would
rather keep the work on the zSeries.
Larry Bernacki
Laboratory Technical Services Branch, ANG-E13
FAA William J. Hughes Technical Center
Atlantic City International Airport, NJ 08405
609 485-7193
[email protected]
----------------------------------------------------------------------
For LINUX-390 subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO LINUX-390 or visit
http://www.marist.edu/htbin/wlvindex?LINUX-390
----------------------------------------------------------------------
For more information on Linux on System z, visit
http://wiki.linuxvm.org/
