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Groups > sci.electronics.design > #453209
| From | David Brown <david.brown@hesbynett.no> |
|---|---|
| Newsgroups | sci.electronics.design |
| Subject | Re: big drives |
| Date | 2017-03-23 10:24 +0100 |
| Organization | A noiseless patient Spider |
| Message-ID | <ob043n$6sa$1@dont-email.me> (permalink) |
| References | <rpn2dc9nqndp7glvfi5pdedb8ujgmf7pln@4ax.com> <oatk6f031g4@drn.newsguy.com> <20170322a@crcomp.net> <oau5tt$dpd$1@dont-email.me> <20170322b@crcomp.net> |
On 22/03/17 19:35, Don Kuenz wrote: > David Brown <david.brown@hesbynett.no> wrote: >> On 22/03/17 15:23, Don Kuenz wrote: > > <snip> > >>> >>> The 15K RPM 600 GB SAS RAID5 array in one of my server farms is so full >>> that it recently grew into a second chassis. That sucks in many ways. >>> >>> The root problem is a 600 GB limitation on 15K RPM SAS hard drives that >>> has been in force for about a decade now. There's been absolutely no >>> improvement nor innovation in 15K RPM SAS drives over that period of >>> time. >>> >> >> My usual supplier has 15K rpm SAS at 0.9 TB, 2.5". It also has 1 GB >> SSDs that are /much/ faster, and more reliable, at half the price. So >> the root problem is that you are stuck in outdated technology. >> >> (I fully appreciate at that it can make sense to continue with what you >> have, rather than change to something new even if it is cheaper, faster, >> and more readily available. There can be many reasons for that.) > > The capacity of 3.5" 15K SAS hard drives has been stalled at an upper > limit of 600 GB for about a decade now. It becomes more of a problem in > the enterprise space with each passing day. For 3.5" drives, that might well be true. A 15K rpm 3.5" drive is mechanically much more demanding than a 2.5" drive. And since you can get much faster and much more reliable drives for less money, and you can also get brackets to fit 2.5" disks into 3.5" frames, it is extremely unlikely that anyone is going to make new 15K 3.5" drives. > > "Outdated technology" seems like a cop out when brand new PCs with 3.5" > hard drives larger than 10 TB are about to ship. The rationalization > that users have only themselves to blame for using "outdated technology" > reminds me of Dilbert's boss. "It isn't a problem if you can give it to > someone else." That's what Dilbert's boss always says. > Hard disks are not outdated technology, nor are 3.5" disks. But super-fast hard disks /are/ outdated - there is no point in them. SSDs are smaller, faster, cheaper, lower power, and more reliable - they win on every count. Your entire multi-disk raid could be replaced by a couple of big SSDs in RAID1 (or perhaps Linux RAID10) setup for a faster system taking less space and using a fraction of the power and noise. (Again, I fully understand that replacement is not necessarily a cheap or easy process - I am giving you the manufacturers' viewpoint here.) Hard disks make sense when you want cheap GB's. SSDs make sense when you want speed. So new hard disks these days are typically 5400 or maybe 7200 rpm - 10K and 15K spinning rust is a thing of the past.
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big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-21 10:21 -0700
Re: big drives bitrex <bitrex@de.lete.earthlink.net> - 2017-03-21 13:47 -0400
Re: big drives George Herold <gherold@teachspin.com> - 2017-03-21 12:42 -0700
Re: big drives dagmargoodboat@yahoo.com - 2017-03-21 12:55 -0700
Re: big drives George Herold <gherold@teachspin.com> - 2017-03-21 13:37 -0700
Re: big drives bill.sloman@ieee.org - 2017-03-21 21:51 -0700
Re: big drives George Herold <gherold@teachspin.com> - 2017-03-22 07:26 -0700
Re: big drives Winfield Hill <hill@rowland.harvard.edu> - 2017-03-22 03:38 -0700
Re: big drives Don Kuenz <g@crcomp.net> - 2017-03-22 14:23 +0000
Re: big drives David Brown <david.brown@hesbynett.no> - 2017-03-22 16:43 +0100
Re: big drives Don Kuenz <g@crcomp.net> - 2017-03-22 18:35 +0000
Re: big drives David Brown <david.brown@hesbynett.no> - 2017-03-23 10:24 +0100
Re: big drives Don Kuenz <g@crcomp.net> - 2017-03-23 16:11 +0000
Re: big drives krw@notreal.com - 2017-03-23 13:05 -0400
Re: big drives Don Kuenz <g@crcomp.net> - 2017-03-23 17:39 +0000
Re: big drives krw@notreal.com - 2017-03-23 21:05 -0400
Re: big drives Don Kuenz <g@crcomp.net> - 2017-03-24 03:01 +0000
Re: big drives krw@notreal.com - 2017-03-23 23:09 -0400
Re: big drives Don Kuenz <g@crcomp.net> - 2017-03-24 04:15 +0000
Re: big drives krw@notreal.com - 2017-03-24 22:34 -0400
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-22 12:25 -0700
Re: big drives dplatt@coop.radagast.org (Dave Platt) - 2017-03-22 13:57 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-22 16:03 -0700
Re: big drives krw@notreal.com - 2017-03-22 20:29 -0400
Re: big drives tabbypurr@gmail.com - 2017-03-22 04:36 -0700
Re: big drives Spehro Pefhany <speffSNIP@interlogDOTyou.knowwhat> - 2017-03-22 08:57 -0400
Re: big drives Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-22 11:59 -0400
Re: big drives krw@notreal.com - 2017-03-22 13:23 -0400
Re: big drives Jon Elson <jmelson@wustl.edu> - 2017-03-22 16:38 -0500
Re: big drives krw@notreal.com - 2017-03-22 20:31 -0400
Re: big drives gray_wolf <g_wolf@nospam.com> - 2017-03-23 20:59 -0500
Re: big drives gray_wolf <g_wolf@nospam.com> - 2017-03-23 21:00 -0500
Re: big drives Robert Baer <robertbaer@localnet.com> - 2017-03-23 22:21 -0800
Re: big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-22 07:51 -0700
Re: big drives krw@notreal.com - 2017-03-22 13:23 -0400
Re: big drives Robert Baer <robertbaer@localnet.com> - 2017-03-23 22:19 -0800
Re: big drives tabbypurr@gmail.com - 2017-03-24 04:26 -0700
Re: big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-24 08:38 -0700
Re: big drives Jon Elson <jmelson@wustl.edu> - 2017-03-22 16:37 -0500
Re: big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-22 16:07 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-22 16:21 -0700
Re: big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-22 16:45 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-22 23:21 -0700
Re: big drives John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-24 13:06 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-24 16:56 -0700
Re: big drives John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-24 17:35 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-24 21:47 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-22 16:19 -0700
Re: big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-22 16:50 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-22 17:58 -0700
Re: big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-22 21:00 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-22 22:50 -0700
Re: big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-23 08:27 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-23 12:25 -0700
Re: big drives tabbypurr@gmail.com - 2017-03-24 04:31 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-24 06:38 -0700
Re: big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-24 08:41 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-24 11:38 -0700
Re: big drives John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-24 13:55 -0700
Re: big drives tabbypurr@gmail.com - 2017-03-24 17:14 -0700
Re: big drives John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-24 17:41 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-24 18:00 -0700
Re: big drives Joerg <news@analogconsultants.com> - 2017-03-23 09:35 -0700
Re: big drives "Michael A. Terrell" <mike.terrell@earthlink.net> - 2017-03-23 18:38 -0400
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-23 16:18 -0700
Re: big drives Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-23 18:29 -0400
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-23 18:38 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-23 18:54 -0700
Re: big drives pcdhobbs@gmail.com - 2017-03-23 19:16 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-23 19:28 -0700
Re: big drives pcdhobbs@gmail.com - 2017-03-23 19:55 -0700
Re: big drives krw@notreal.com - 2017-03-23 23:04 -0400
Re: big drives pcdhobbs@gmail.com - 2017-03-23 22:00 -0700
Re: big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-24 08:46 -0700
Re: big drives krw@notreal.com - 2017-03-24 22:38 -0400
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-23 22:22 -0700
Re: big drives pcdhobbs@gmail.com - 2017-03-23 23:08 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-24 00:21 -0700
Re: big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-24 09:00 -0700
Re: big drives David Brown <david.brown@hesbynett.no> - 2017-03-24 17:14 +0100
Re: big drives tabbypurr@gmail.com - 2017-03-24 09:19 -0700
Re: big drives David Brown <david.brown@hesbynett.no> - 2017-03-24 17:47 +0100
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-24 12:01 -0700
Re: big drives Jasen Betts <jasen@xnet.co.nz> - 2017-03-24 20:30 +0000
Re: big drives John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-24 14:06 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-24 11:55 -0700
Re: big drives "Michael A. Terrell" <mike.terrell@earthlink.net> - 2017-03-25 04:00 -0400
Re: big drives upsidedown@downunder.com - 2017-03-24 22:18 +0200
Re: big drives John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-24 14:15 -0700
Re: big drives Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-03-25 13:21 +0200
Re: big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-25 07:54 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-25 10:53 -0700
Re: big drives upsidedown@downunder.com - 2017-03-25 23:11 +0200
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-25 15:14 -0700
Re: big drives upsidedown@downunder.com - 2017-03-26 12:18 +0300
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-26 03:33 -0700
Re: big drives Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-26 16:36 -0400
Re: big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-26 14:13 -0700
Re: big drives Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-03-25 21:04 +0200
Re: big drives pcdhobbs@gmail.com - 2017-03-24 19:03 -0700
Re: big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-24 08:53 -0700
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-24 12:12 -0700
Re: big drives John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-24 14:20 -0700
Re: big drives krw@notreal.com - 2017-03-24 22:43 -0400
Re: big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-24 20:10 -0700
Re: big drives krw@notreal.com - 2017-03-24 23:23 -0400
Re: big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-24 22:25 -0700
Re: big drives Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-03-25 13:23 +0200
Re: big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-23 19:36 -0700
Re: big drives upsidedown@downunder.com - 2017-03-24 10:14 +0200
Re: big drives Don Y <blockedofcourse@foo.invalid> - 2017-03-24 01:31 -0700
Re: big drives John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-23 16:21 -0700
Re: big drives "Michael A. Terrell" <mike.terrell@earthlink.net> - 2017-03-24 08:54 -0400
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