Hi
Just have a few things I wished to verify and get some idea about.
1. I read through some previous postings on compression in netbackup. the tape perform internal hardware compression. Would it be possible to gain more disk space using software compression? I am not concerned about network traffic, since the backups usually take 2-3 hrs to complete and are done when there is not a lot of network activity going on.
2. I am currently using a combination of LTO ultrium 1 & 2 tapes for keeping backups, Is that advisable? I am presuming that when the volumes are added, the robot(storEdge L8) is able to distinguish between the two in terms of their capacities. (Note: I am only using ultrium 1 (100Gb/200Gb) tapes to store backups whose retention period is 2 weeks, the total capacity for all these backups has never exceeded 50Gb) i presume I am safe, but I would just like to be sure.
3. I could not find the maximum mounts suggested for these tapes, could someone tell me how I can calculate them for my policies. Currently I have 5 daily backups for quite a few ultrium-2 tapes. I have not set any maximum mounts limit.
4. Currently, since I have no mechanism of verifying whether a tape has gone bad, I try to restore a testfile every month from each tape, what could be the possible indications apart from media freezes?
oskhan
Just have a few things I wished to verify and get some idea about.
1. I read through some previous postings on compression in netbackup. the tape perform internal hardware compression. Would it be possible to gain more disk space using software compression? I am not concerned about network traffic, since the backups usually take 2-3 hrs to complete and are done when there is not a lot of network activity going on.
2. I am currently using a combination of LTO ultrium 1 & 2 tapes for keeping backups, Is that advisable? I am presuming that when the volumes are added, the robot(storEdge L8) is able to distinguish between the two in terms of their capacities. (Note: I am only using ultrium 1 (100Gb/200Gb) tapes to store backups whose retention period is 2 weeks, the total capacity for all these backups has never exceeded 50Gb) i presume I am safe, but I would just like to be sure.
3. I could not find the maximum mounts suggested for these tapes, could someone tell me how I can calculate them for my policies. Currently I have 5 daily backups for quite a few ultrium-2 tapes. I have not set any maximum mounts limit.
4. Currently, since I have no mechanism of verifying whether a tape has gone bad, I try to restore a testfile every month from each tape, what could be the possible indications apart from media freezes?
oskhan