Now, to transfer from one TSM to another, like RHEL as suggested, I don't remember that a copy of a node was not possible if it was plugged with Centera.
I will need to ask the people who were involved in that in some of my previous projects or current workplace.
Unfortunately I am in holidays now until next Wednesday, so I won't be able to give you an answer before next week. So if someone has some experience, I hope he will be able to share, otherwise I will try to give something next week.
Per IBM- That is not possible with Centera. We are also storing files in a file device class which is a compliance/DR concern for us. Based on everything that I have researched and some convos with our IBM AVP : We are going to take the approach of using fresh servers and extracting from AIX and reloading into Linux.
We have an entire Linux CMOD architecture setup and currently running that is not being used. It was setup in 2016 and the migration was never started. CMOD and TSM on independent servers. CMOD 9.5, DB2 10.5, TSM 7.1.1. I think I am going to apply the latest fixpacks for CMOD and DB2, and upgrade to Spectrum Protect 8.1 since we want to use ICOS. We don't have any data in this environment currently.
I have some questions about this, mostly around the extract/reload. I have never had to do an extract like this before of an entire system. I know there's several ways I can do it. Here's my initial thoughts-
ARSXML export of my objects
ARSDOC get
ARSLOAD running as a daemon
As far as the extract goes- I can see two ways of doing it but I am sure there are more. We have 55 application groups, 352 applications.
Some quick metrics show me that in the past 5 years we have loaded a total of 156,802 individual files. The total size for the files retrieved was 2.3TB, and we stored a total of 500GB after compression. 117 Million rows were inserted into the database. Total time for all loads from the 87 records is around 350 hours. Each application group has no more than 17 fields defined.
1) arsdoc get -u admin -p password -h archive -g APPGROUP -L LOADID <--Retrieve each load as one file, let ARSLOAD DAEMON reload.
2) arsdoc get -u admin -p password -h archive -g APPGROUP -acgNv -I "where doc_name='1FAAA' -o OUTPUT <--Retrieve each load as a .out/.ind/.res file, let ARSLOAD reload. The benefit I can see doing this is that I will have the index and it will use the generic indexer instead of calling ACIF/PDF indexer, which would save some system resources I would imagine.
3) Regarding the storing process - Anymore, with the implementation of things like ICOS, and even other high speed archives- Is there really any benefit to loading to cache and then migrating to TSM? I can see how this would have been a case in the past with older storage methods like jukeboxes and optical platters, but I would imagine that new archives even things like Centera, ECS, S3, etc..are significantly faster. I am thinking of having our new environment load directly to spectrum protect.
On an average day, we have around 10,000 retrievals via ODWEK.
Based on the 66 records and similar AFP files with similar resources-
Retrieval from Cache - .017 Seconds
Retrieval from TSM - (TSM5.5/AIX6.1/CMOD and TSM on the same box) - Using a FILE device class - 0.023 Seconds
Retrieval from TSM - (TSM5.5/AIX6.1/CMOD and TSM on the same box) - Using a CENTERA device class - 0.427 Seconds
On an average day, we have around 200 loads, about 98% of them are stored as AFP.
Comparing files that have exact application group settings, and exact indexing settings, with similar AFP structure-
Load directly to TSM - FILE device class - 3.8 Seconds
Load directly to TSM - Centera device class - 4.6 Seconds
Load directly to CACHE - 4.9 Seconds
Our system is small compared to what I've encountered in the past.
Big difference - Wondering what kind of performance increases/decreases we can expect with ICOS, I would imagine probable some better performance using the latest and greatest versions of our software since we are currently so behind.
I'd like some feedback on my two thoughts of retrieval to reload the files- and if anyone has a better more efficient way of doing it I am all ears. Also thoughts on loading directly to Spectrum Protect over cache. Thanks everyone!