Hi Forum, Living in an area with sirens warning for incoming rockets about daily, I got somewhat pressured reviewing our Disaster Recovery procedures.
Our setup: We have a single server center that is backed up on TSM Spectrum Protect on daily basis. The backup is container based with 100 TB disk, of which about 70 % is used. Compression savings: 7 %, deduplication savings: 36 %. The container dirs are backed up daily to two tape storage pool with "Protect stgpool" . The server room is in one building, the container storage in a near building in the cellar. The tapes system about 800 m. away, one of the tape sets is stored about once a month with a database tape in a fire resistant safe at the other side of town. Normally I think this is reasonable, but now I consider a hit to the server room and the container disks simultaneously. Recovery would come from tape. My problem: restoring from tape would be extremely slow as we first should restore all of the containers before thinking about restoring clients. I came across the "hydrated tape" option, and we also may consider a protect stgpool to disk. Our system manager tells me that the hydrated tape is cumbersome, as it would take a lot of time, a lot of tapes, and restore would again need to bring a lot of tapes online. So here is my question, what option makes more sense: 1. Hydrated tape, store after completion in vault, update maybe once a month 2. Disk storage online, at the other side of town, but not in a vault 3. Disk storage in the cloud, probably AWS S3 deep freeze, as the need to really recover is quite low Consider price, convenience, speed of backup and restore. Did you set up such system, what is your experience ? All comments are welcome. David de Leeuw Ben Gurion University of the Negev Beer Sheva Israel
