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I would guess #1: Tape controller. On our 730 using 3580-H23 drives, saves at 70GB/hour over a 6534. On our 830 using the same drive types but a 2729, we get 200GB/hour. The machines have similar RAM, CPW, # disk arms, etc. And really, more than the tape controller it's the SPD bus. You could also potentially mention the spreading of the data will be optimal on the 520 as it was a reload. But I don't think it would make that large of a difference. John A. Jones Americas Security Officer Jones Lang LaSalle, Inc. V: +1-630-455-2787 F: +1-312-601-1782 John.Jones@xxxxxxxxxxxxxxxxxxxxxxx -----Original Message----- From: rob@xxxxxxxxx [mailto:rob@xxxxxxxxx] Sent: Friday, August 13, 2004 10:06 AM To: midrange-l@xxxxxxxxxxxx Subject: More disk arms myth exploded... <snip> Don't know if it: 1) was the difference between the 6534 and the 2749 card 2) the way we have them configured (do we have the tape card on the 520 not sharing a processor with disk and not the same on the 820?) 3) or the difference between the 520 and the 820 <snip> Rob Berendt -- Group Dekko Services, LLC Dept 01.073 PO Box 2000 Dock 108 6928N 400E Kendallville, IN 46755 http://www.dekko.com This email is for the use of the intended recipient(s) only. If you have received this email in error, please notify the sender immediately and then delete it. If you are not the intended recipient, you must not keep, use, disclose, copy or distribute this email without the author's prior permission. We have taken precautions to minimize the risk of transmitting software viruses, but we advise you to carry out your own virus checks on any attachment to this message. We cannot accept liability for any loss or damage caused by software viruses. The information contained in this communication may be confidential and may be subject to the attorney-client privilege. If you are the intended recipient and you do not wish to receive similar electronic messages from us in future then please respond to the sender to this effect.
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