Well, I can fill you in on 3590 drives and that might be close to LTO's for each drive on the chain, add half of the previous drives thruput
with 3590-B1A's a single drive on a scsi card all by itself is rated at 9 MB/sec add another one on the chain, you will gain another 4.5 MB/sec (9/2) or a total of 13.5 MB/sec add another one on the chain, you will gain another 2.25 MB/sec (4.5/2) or a total of 15.75 MB/sec add another one on the chain, you will gain another 1.125 MB/sec (2.25/2) or a total of 16.875 MB/sec so you see, past two drives on a card, things get ugly fast... -----Original Message----- From: Taylor, David [mailto:[EMAIL PROTECTED]] Sent: Thursday, December 20, 2001 9:21 AM To: [EMAIL PROTECTED] Subject: SCSI Channel to LTO drive rule of thumb Hi *, Can anyone share with me, a good rule-of-thumb for the maximum number of LTO drives that should be attached to a single Ultra-II SCSI bus? Using the theoretical max transfer rates of 15 MB/s for the drives and 80 MB/s for the SCSI, I shoould be able to put 5 drives on one bus and still have room to spare (theoretically). What is the generally accepted maximum number, in the real world? TIA David Taylor ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com **********************************************************************
