Accepted that the Single Point of Failure of using a single TSM Library manager instance is a risk. It seems that this is the major benefit of Gresham- its ability to distribute shared library control. This then needs to be considered against cost.
-----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Copin, Christophe (Ext) Sent: 20 November 2008 13:29 To: [email protected] Subject: Re: [ADSM-L] TSM Library manager v Gresham Hi I disagree. Except the price tag ... Unfortunatelly, TSM built-in library manager is not smart enough for large ACSLS libraries. How do you handle multiple ACSLS scratch pools without external library manager (Gresham or whatever) ? What path optimization can be done without external library manager ? (to avoid using the pass-through) Let's say I would like TSM to choose the closest free drive (same LSM) to mount a tape ... ... TSM uses tape drives in sequential order. If your TSM Server hosts several instances, Gresham allows you not to depend on one *critical* TSM library manager instance. With an external manager, each instance is able to mount/dismount tapes as a stand alone server would do. In a nutshell, I would say the more larger is your library(ies), the worth gresham is. Actually i would say the drawback is only the price, and the fact you'll will have to get a license for each storage agent. (;_;) If you don't want to manage SL8500s and such large librairies, in that cases, forget about Gresham and use TSM builtin manager. Christophe. -----Message d'origine----- De : ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] De la part de Mark Stapleton Envoyé : jeudi 20 novembre 2008 13:40 À : [email protected] Objet : Re: [ADSM-L] TSM Library manager v Gresham From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Ian Smith > What experiences do people have of library/drive control for SL8500? > > I am trying to work out the pros and cons of either using TSM Library > manager with ACSLS or the Gresham agents. Does anyone have any thoughts > or experiences regarding performance, stability, ease of use etc? There isn't anything that TSM's built-in library management has that Gresham offers. Indeed, getting multiple TSM instances resync'd with Gresham can cause (temporary) inability to use the library during that resync. Stability isn't usually an issue with either TSM library management or Gresham. Gresham requires additional administration that TSM's library management doesn't need. And TSM's library management doesn't have an outrageous price tag. (You'll still need to use ACSLS, of course.) -- Mark Stapleton ([EMAIL PROTECTED]) CDW Berbee System engineer 7145 Boone Avenue North, Suite 140 Brooklyn Park MN 55428-1511 763-592-5963 www.berbee.com Afin de préserver l'environnement, merci de n'imprimer ce courriel qu'en cas de nécessité. Please consider the environment before printing this mail. Dell Corporation Limited is registered in England and Wales. Company Registration Number: 2081369 Registered address: Dell House, The Boulevard, Cain Road, Bracknell, Berkshire, RG12 1LF, UK. Company details for other Dell UK entities can be found on www.dell.co.uk.
