"Tommy Tsui" <tommyt...@gmail.com> wrote in message news:<cal96cms6abxwrwjtdlozcqjhzo-wbtxokdu-ws2hdmltfwu...@mail.gmail.com >... > What I concerns are: > 1. Tape still have life time, if 1TB tape damage then we need more time to > re-built or re-create it, except you implement dual copy or PPRC VTS and it > cost you more.
Can you really recreate all your data on tape??? If not, you need duplication in some form. > 2. Tape migration is my concern, I think disk to disk migration is more > faster solution. I can't find any migration approach for B20 to TS7740 or > TS7740 to another new model, except using COPYCAT or TAPECOPY utility, read > all tapes to cache and copy back to other tape subsystem Both 7720 and 7740 run at Ficon speed. The 7720 and 7740 will write to the disk cache and the 7720 will destage asynchroneously. > 3. IBM Tape drives cannot read each other, TS1120, TS1130, TS1140...If a > new model comes and we need to preform another migration....copy again and > again from tape to another tape system because of new drives.....TRUE > This also holds for disk-only systems. You cannot move the SATA drives from your old to your new tape system. Kees. > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN ******************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ******************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
