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Rob,good point. I would think that STRASPBAL with some PF/LF file management and RGZPFM's where appropriate should keep his disk access about as effecient as it's going to get... Obviousely you can't let the platters get too full or you get past the knee of the curve on queueing...and lose effeciency there...
And, it also depends on what you're doing. If you're a heavy SAVF or JRN user, I would suggest you may want to consider a seperate ASP for those and that they be on their own spindles and if REALLY heavy perhaps even further isolated.
Don in DC At 09:58 AM 3/14/2006 -0500, you wrote:
And, years ago, IBM did occasionally recommend an unload/reload to balance the disks. Did a dandy job. Hopefully that is well covered by the significantly less risky STRASPBAL. Rob Berendt -- Group Dekko Services, LLC Dept 01.073 PO Box 2000 Dock 108 6928N 400E Kendallville, IN 46755 http://www.dekko.com "Jones, John \(US\)" <John.Jones@xxxxxxxxxx> Sent by: midrange-l-bounces@xxxxxxxxxxxx 03/14/2006 09:43 AM Please respond to Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx> To "Midrange Systems Technical Discussion" <midrange-l@xxxxxxxxxxxx> cc Subject RE: Iseries Disk managment STR/ENDDSKRGZ; not sure which OS release started offering these. Defrags free space only; apparently doesn't make files contiguous. Having contiguous files is less important with scatter-loading, although it'd be nice if it could make contiguous each file's allocation on any given disk unit. There's also STRASPBAL, which has been around for a while. The absolute cleanest "defrag" is a save/wipe/restore of the system. Unlike the above, this method has risks and involves downtime. John A. Jones, CISSP Americas Information Security Officer Jones Lang LaSalle, Inc. V: +1-630-455-2787 F: +1-312-601-1782 john.jones@xxxxxxxxxx -----Original Message----- From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Steve Moland Sent: Tuesday, March 14, 2006 8:25 AM To: midrange-l@xxxxxxxxxxxx Subject: Iseries Disk managment I'm a fossil and have been around since 360/20 days. Other than using RGZPFM to re-organize some very volatile file on my career long boxes, I just realized that I've not thought about or worried about defragging the drives as a whole. I revitalized some of my grandkids laptops this last weekend by simply defragging them. The question of why we don't need to do that on the Iseries boxes popped into my head. Is that because the don't need to have it done, or we really do need to do that and is it like the early days when IBM just didn't give us the same tools and features that existed on other boxes. That's not necessarily a complaint because I think many may have stayed out of trouble by not having some more esoteric features available. There is also the issue that they write books about what I don't know about that which I work on. [grin] Steve Moland -- This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/midrange-l or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/midrange-l. 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 the future then please respond to the sender to this effect. -- This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/midrange-l or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/midrange-l. -- This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/midrange-l or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/midrange-l.
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