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An average speed of 413 Mb/min sounds slow to me for an LTO2 drive. You mentioned "full uncompressed back ups" - If you really have the drive set for no compression, you are only getting around half the tape capacity and potentially half the speed. The other things I would look at are...

Just to finish this thread up: Before I had the chance to apply patches or other changes, the DB self-destructed. Without going into details, nothing would bring Arcserve back, so I un-installed, cleaned out the registry and then installed fresh from SP1. Many small problems have been fixed...

For some reason I can't find that post but I will be patching the tape server and some clients next week - it will be interesting to compare the speeds before & after. I discovered that many servers are still on the unpatched 11.1 client and even found a few AS 6.61 clients around. I started...

I had a look at the tape server's SCSI card- it's a SMART6400 with 192Mb of battery-backed cache. The cache is split 50-50 between read & write; I will switch it to favour writing. I noticed that the tape drives are connected to the same SCSI card; I have always been told they should attach to...

Ah Ha! They have not applied ANY patches to Arcserve that I am aware of - applying SP1 was right at the top of my to-do list and I will also find that device patch. Excellent advice! I know that MUX and streaming is not supported for staging - I was hoping to 'simulate' their benefits using...

I have been given the task of speeding up our unacceptably slow backups. We use BAB 11.5 enterprise on a fast server with a library capable of 8 SDLT320 drives but only two fitted. There are two jobs configured and both use disk staging to (supossedly) make the backups faster. Of the average 40...

@ VSchumpy: most interesting (again)! I pointed out to the previous backup guy that the staging devices were incredibly fragmented and apparently they never bother to defrag any of their 180 servers. The most fragmented device had over 3,000 segments and I will be manually defragging it ASAP...

There is yet another consideration in choosing your tape technology: backward compatibility and data retention. Depending on your retention policy and your current tape technology, you might want to stay with some sort of DLT. I was caught out with the sales pitch that SDLT drives would read...

I have used two similar Overland libraries and they have been highly reliable and well supported. If you need to increase your backup speed dramatically, you should look at LTO-3. The drives are not much more expensive and the data rate onto tape is quite a bit higher, which will cut your backup...