Date: 29 Jul 1999 00:22:13 -0400 From: rs@seastrom.com (Robert E. Seastrom) To: freebsd-doc@FreeBSD.org Cc: rs@seastrom.com Subject: Found an error in the handbook Message-ID: <879080ulu2.fsf@valhalla.seastrom.com>
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Sun's model 411 is the type of external enclosure that the tape drive is housed in. It is _not_ the model of an external tape drive from Sun. An external Archive Python 28454 (in a 411 case) is Sun part # 595-3067 Throughput on a dd from /dev/zero appears to be in the 1.5 MByte/sec range, however doing a dd from a file on local disk on the same controller resulted in substantially worse goodput, presumably because of overhead for speed changes on the tape. Perhaps giving this drive a bus of its own would be a good idea. Controller for this test was a Buslogic BT958. Original note is at http://www.freebsd.org/handbook/hw-storage.html#HW-STORAGE-PYTHON-28454 Archive Python 28454 The boot message identifier for this drive is ARCHIVE Python 28454-XXX4ASB type 1 removable SCSI 2 density code 0x8c, 512-byte blocks This is a DDS-1 tape drive. Native capacity is 2.5GB on 90m tapes. Data transfer rate is XXX. This drive was repackaged by Sun Microsystems as model 411. Reported by: Bob Bishop <rb@gid.co.uk> To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-doc" in the body of the messagehome | help
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