We have Disaster Site with fiber optics links from Head Office (20 miles); - 2 fiber links (2Gb/s each) are used by IBM DS8100 disk subsystem to perform Metro Mirroring (PPRC in the past). Metro Mirroring allows copying production data online from HO to DRS including TSM Server 5.5.4.1 data (database, logs and configuration files); - 3rd fiber is used for Ethernet network between HO and DRS (1Gb/s). I am using remote copies (device class FILE) at DRS FATA disks via NFS mounted file system. Writing speed is not very high (20MB/s for single copy session), but it is enough to backup daily portion of data using 2 parallel copy sessions. Disaster recovery is very simple: - just start mirrored TSM Server; - use copy storage pool from the local file system. Disaster recovery is very fast. We have reduced recovery time from 24 hours (from tapes) to 4 hours (from disk). To reduce TSM Server problems during Disaster Site testing (Ethernet link is down): - use soft mounted NFS file system; - postpone remote copies; - upd stg <copy pool> acc=unavailable; - umount NFS file systems. After testing: - mount NFS file systems; - upd stg <copy pool> acc=readwrite.
Grigori G. Solonovitch -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[email protected]] On Behalf Of yoda woya Sent: Tuesday, January 11, 2011 1:15 AM To: [email protected] Subject: [ADSM-L] DRM and file based copy storage group Can the copy group of a primary file based storage pool point to a file based copy storage pool. Is so, how does DRM handle the failure of the TSM server or the primary storage pool. If any one is doing this please give me as much insight as you can. I would like to set a copy stgpool on a remote disk array for DRM and not sure if this is possible. Please consider the environment before printing this Email. CONFIDENTIALITY AND WAIVER: The information contained in this electronic mail message and any attachments hereto may be legally privileged and confidential. The information is intended only for the recipient(s) named in this message. If you are not the intended recipient you are notified that any use, disclosure, copying or distribution is prohibited. If you have received this in error please contact the sender and delete this message and any attachments from your computer system. We do not guarantee that this message or any attachment to it is secure or free from errors, computer viruses or other conditions that may damage or interfere with data, hardware or software.
