Steve Cousins <[EMAIL PROTECTED]> wrote: > > Just under 60MB/sec seems to be the maximum tape transport read/write > > limit. Pretty reliably the first write from the beginning of tape was a > > bit slower than writes started further into the tape. > > I believe LTO-3 is rated at 80 MB/sec without compression.
I just checked that. The spec page here: http://h18006.www1.hp.com/products/storageworks/ultrium920/index.html says: Higher performance with dynamic data rate matching - Ultrium 920 Tape Drive 120MB/sec compressed data transfer using 2:1 compression, Or with compression off 60MB/sec, assuming that the 120MB/s was rate limited by the physical tape write speed and not at all by the compression. On the other hand, the specs for the CARTRIDGE here: http://www.hboutlet.com.au/catalog/product_info.php?products_id=181385 list 80MB/s uncompressed, which is the number you cited. Also here: http://en.wikipedia.org/wiki/Linear_Tape-Open they cite 80MB/s. Do different LTO-3 drives have different maximum tape write speeds? Regards, David Mathog [EMAIL PROTECTED] Manager, Sequence Analysis Facility, Biology Division, Caltech _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
