Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > alt.comp.os.windows-11 > #18532
| From | "Carlos E.R." <robin_listas@es.invalid> |
|---|---|
| Newsgroups | alt.comp.os.windows-11, alt.comp.os.windows-10 |
| Subject | Re: Mechanical or SSD for backup drive |
| Date | 2025-04-20 20:23 +0200 |
| Message-ID | <imqfdlxojj.ln2@Telcontar.valinor> (permalink) |
| References | <5cm80k1qavurb3keb805p5msgsbaimh7qt@4ax.com> <vu28sn$3c56t$1@dont-email.me> |
Cross-posted to 2 groups.
On 2025-04-20 09:48, Paul wrote: > On Sat, 4/19/2025 10:34 PM, micky wrote: ... > 2a) Air breather drives last a long time. The motors are FDB (fluid dynamic bearing), > which is frictionless once the motor is up to speed. However, the surface > of the platter, can respond to contaminants in the air, and while there > is a hepafilter on the breather hole, we don't really know how good of > a job that is doing. My experience here is, I see more drive failures > after a month of humid conditions in the room, than when the room is > a bit drier. Still, considering how long an archive has to last, I'm > never too concerned that an OS backup will croak after only two years. > Note that, the hepafilter design has changed, and the serpentine path > is now longer. The idea is, the path inside is shaped, so the air has > to travel a slightly longer distance. Yep. Bough recently some "Seagate IronWolf Pro NAS 10TB 3.5" SATA 3" and they are air breathers. The hole was clearly visible with a filter. The gyroscopic effect when removing one from a test cady is very noticeable. Surprised me. > > 2b) Helium drives are sealed. Helium is getting expensive. This is part of > the reason that air breathers are going up the capacity chart, the drive > may be cheaper due to the shortage of Helium. I wonder, why not nitrogen? Helium is a noble gas, reacts to nothing. It leaks through anything like a sieve, perhaps like hydrogen. But nitrogen doesn't react to many things. > Helium drives are warranted > for five years, for the ability to hold the helium gas inside. We don't > really know, how many years a helium drive would last (as an archival device). > There is no gas port, to pump them up again. They are above atmospheric > pressure a tiny bit, and this allows the drive to have a sensor inside > to detect a gas failure. The drive has two covers -- the "adhesive cover" > holds the gas. The "mechanical cover" is welded over top of the adhesive > cover. The mechanical cover is not gas-tight. But it serves to keep the > adhesive cover from moving. As a joke, data recovery companies have been > using NC machines, to mill the weld edge in order to get the outside > cover off. (Air breathers come apart with a screwdriver, during repair.) > > Because it's sealed, the drive inside is very clean and there is no possibility > of a redox reaction on the plating surface. The drive uses less electrical > power, due to reduced friction while rotating. The heads still "fly" in > helium, and there is a high pressure zone right underneath the sled. To > maintain a high pressure zone like that, implies friction and energy loss. > That pressure, helps cushion the head and give the 70 gees of shock resistance. > > We get super high quality storage, are likely to be able to do a restore, > two years after doing a backup. But the actual period of time the helium > stays in the can, is an unknown. I own just one Helium drive, to see how > long it lasts :-) It's an 18TB drive. My backup fleet is six 6TB air breather > drives. > > Summary: We have three applications. SSD drive while traveling, due to shock > resistance. The people at the border can copy your drive faster, at > 530MB/sec, which is handy. :-) Mine are encrypted. I hope they have some fun. ... -- Cheers, Carlos.
Back to alt.comp.os.windows-11 | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Mechanical or SSD for backup drive micky <NONONOmisc07@fmguy.com> - 2025-04-19 22:34 -0400
Re: Mechanical or SSD for backup drive Paul <nospam@needed.invalid> - 2025-04-20 03:48 -0400
Re: Mechanical or SSD for backup drive Andy Burns <usenet@andyburns.uk> - 2025-04-20 09:27 +0100
Re: Mechanical or SSD for backup drive Valerio Vanni <valerio.vanni@inwind.it> - 2025-04-20 11:50 +0200
Re: Mechanical or SSD for backup drive "Carlos E.R." <robin_listas@es.invalid> - 2025-04-20 20:23 +0200
Re: Mechanical or SSD for backup drive micky <NONONOmisc07@fmguy.com> - 2025-04-20 16:55 -0400
Re: Mechanical or SSD for backup drive "Carlos E.R." <robin_listas@es.invalid> - 2025-04-21 14:42 +0200
Re: Mechanical or SSD for backup drive micky <NONONOmisc07@fmguy.com> - 2025-04-21 21:22 -0400
Re: Mechanical or SSD for backup drive Daniel70 <daniel47@eternal-september.org> - 2025-04-22 20:15 +1000
Re: Mechanical or SSD for backup drive micky <NONONOmisc07@fmguy.com> - 2025-04-22 16:52 -0400
Re: Mechanical or SSD for backup drive Java Jive <java@evij.com.invalid> - 2025-04-23 00:37 +0100
Re: Mechanical or SSD for backup drive "Kerr-Mudd, John" <admin@127.0.0.1> - 2025-04-23 17:45 +0100
Re: Mechanical or SSD for backup drive Daniel70 <daniel47@eternal-september.org> - 2025-04-24 20:56 +1000
Re: Mechanical or SSD for backup drive "Carlos E.R." <robin_listas@es.invalid> - 2025-04-24 22:37 +0200
Re: Mechanical or SSD for backup drive micky <NONONOmisc07@fmguy.com> - 2025-04-24 21:48 -0400
Re: Mechanical or SSD for backup drive Paul <nospam@needed.invalid> - 2025-04-25 05:32 -0400
Re: Mechanical or SSD for backup drive Daniel70 <daniel47@eternal-september.org> - 2025-04-25 20:14 +1000
Re: Mechanical or SSD for backup drive "Carlos E.R." <robin_listas@es.invalid> - 2025-04-25 13:37 +0200
Re: Mechanical or SSD for backup drive Daniel70 <daniel47@eternal-september.org> - 2025-04-25 23:32 +1000
Re: Mechanical or SSD for backup drive "Carlos E.R." <robin_listas@es.invalid> - 2025-04-25 20:20 +0200
Re: Mechanical or SSD for backup drive "Kerr-Mudd, John" <admin@127.0.0.1> - 2025-04-25 22:02 +0100
Re: Mechanical or SSD for backup drive Daniel70 <daniel47@eternal-september.org> - 2025-04-26 19:44 +1000
Re: Mechanical or SSD for backup drive Daniel70 <daniel47@eternal-september.org> - 2025-04-26 21:00 +1000
Re: Mechanical or SSD for backup drive "Carlos E.R." <robin_listas@es.invalid> - 2025-04-26 20:07 +0200
Re: Mechanical or SSD for backup drive Paul <nospam@needed.invalid> - 2025-04-26 17:20 -0400
Re: Mechanical or SSD for backup drive "Carlos E.R." <robin_listas@es.invalid> - 2025-04-27 14:17 +0200
Re: Mechanical or SSD for backup drive Mark Lloyd <not.email@all.invalid> - 2025-04-26 19:24 +0000
Re: Mechanical or SSD for backup drive "Carlos E.R." <robin_listas@es.invalid> - 2025-04-26 22:28 +0200
Re: Mechanical or SSD for backup drive "Kerr-Mudd, John" <admin@127.0.0.1> - 2025-04-27 11:36 +0100
Re: Mechanical or SSD for backup drive Daniel70 <daniel47@eternal-september.org> - 2025-04-28 00:16 +1000
Re: Mechanical or SSD for backup drive "Carlos E.R." <robin_listas@es.invalid> - 2025-04-29 21:09 +0200
Re: Mechanical or SSD for backup drive Daniel70 <daniel47@eternal-september.org> - 2025-04-30 19:24 +1000
Re: Mechanical or SSD for backup drive "Kerr-Mudd, John" <admin@127.0.0.1> - 2025-04-30 20:20 +0100
Re: Mechanical or SSD for backup drive "Carlos E.R." <robin_listas@es.invalid> - 2025-04-29 21:18 +0200
Re: Mechanical or SSD for backup drive Java Jive <java@evij.com.invalid> - 2025-04-25 19:04 +0100
Re: Mechanical or SSD for backup drive "Carlos E.R." <robin_listas@es.invalid> - 2025-04-25 23:33 +0200
Re: Mechanical or SSD for backup drive Daniel70 <daniel47@eternal-september.org> - 2025-04-26 20:04 +1000
Re: Mechanical or SSD for backup drive Daniel70 <daniel47@eternal-september.org> - 2025-04-26 21:05 +1000
Re: Mechanical or SSD for backup drive Daniel70 <daniel47@eternal-september.org> - 2025-04-23 19:26 +1000
Re: Mechanical or SSD for backup drive Sam E <no.email@here.invalid> - 2025-04-22 23:00 +0000
Re: Mechanical or SSD for backup drive Java Jive <java@evij.com.invalid> - 2025-04-23 00:40 +0100
Re: Mechanical or SSD for backup drive Newyana2 <newyana@invalid.nospam> - 2025-04-20 07:15 -0400
Re: Mechanical or SSD for backup drive Paul <nospam@needed.invalid> - 2025-04-20 11:11 -0400
Re: Mechanical or SSD for backup drive Newyana2 <newyana@invalid.nospam> - 2025-04-20 12:08 -0400
Re: Mechanical or SSD for backup drive "...winston" <winstonmvp@gmail.com> - 2025-04-20 12:38 -0400
Re: Mechanical or SSD for backup drive "...winston" <winstonmvp@gmail.com> - 2025-04-20 12:31 -0400
Re: Mechanical or SSD for backup drive ant@zimage.comANT (Ant) - 2025-04-21 02:38 +0000
Re: Mechanical or SSD for backup drive Paul <nospam@needed.invalid> - 2025-04-21 03:52 -0400
Re: Mechanical or SSD for backup drive micky <NONONOmisc07@fmguy.com> - 2025-04-21 11:51 -0400
Re: Mechanical or SSD for backup drive Paul <nospam@needed.invalid> - 2025-04-21 21:13 -0400
Re: Mechanical or SSD for backup drive ant@zimage.comANT (Ant) - 2025-04-22 06:07 +0000
Re: Mechanical or SSD for backup drive Paul <nospam@needed.invalid> - 2025-04-22 05:34 -0400
Re: Mechanical or SSD for backup drive Newyana2 <newyana@invalid.nospam> - 2025-04-21 07:40 -0400
Re: Mechanical or SSD for backup drive Paul <nospam@needed.invalid> - 2025-04-21 09:12 -0400
Re: Mechanical or SSD for backup drive Java Jive <java@evij.com.invalid> - 2025-04-21 14:54 +0100
Re: Mechanical or SSD for backup drive Andy Burns <usenet@andyburns.uk> - 2025-04-21 15:29 +0100
Re: Mechanical or SSD for backup drive Java Jive <java@evij.com.invalid> - 2025-04-21 16:06 +0100
Re: Mechanical or SSD for backup drive Paul <nospam@needed.invalid> - 2025-04-21 17:45 -0400
Re: Mechanical or SSD for backup drive Java Jive <java@evij.com.invalid> - 2025-04-22 00:15 +0100
Re: Mechanical or SSD for backup drive Char Jackson <none@none.invalid> - 2025-04-21 23:01 -0500
Re: Mechanical or SSD for backup drive Andy Burns <usenet@andyburns.uk> - 2025-04-22 06:58 +0100
Re: Mechanical or SSD for backup drive Paul <nospam@needed.invalid> - 2025-04-22 05:47 -0400
Re: Mechanical or SSD for backup drive Char Jackson <none@none.invalid> - 2025-04-22 10:37 -0500
Re: Mechanical or SSD for backup drive Paul <nospam@needed.invalid> - 2025-04-22 14:34 -0400
Re: Mechanical or SSD for backup drive Newyana2 <newyana@invalid.nospam> - 2025-04-21 11:38 -0400
Re: Mechanical or SSD for backup drive Paul <nospam@needed.invalid> - 2025-04-21 18:29 -0400
Re: Mechanical or SSD for backup drive Newyana2 <newyana@invalid.nospam> - 2025-04-21 22:23 -0400
Re: Mechanical or SSD for backup drive Frank Slootweg <this@ddress.is.invalid> - 2025-04-21 14:05 +0000
Re: Mechanical or SSD for backup drive Mr Xi Ji Ping <ping@china.cn> - 2025-04-21 15:30 +0000
Re: Mechanical or SSD for backup drive "...winston" <winstonmvp@gmail.com> - 2025-04-21 11:28 -0400
Re: Mechanical or SSD for backup drive Daniel70 <daniel47@eternal-september.org> - 2025-05-15 21:33 +1000
Re: Mechanical or SSD for backup drive knuttle <keith_nuttle@yahoo.com> - 2025-05-15 07:41 -0400
Re: Mechanical or SSD for backup drive "Carlos E.R." <robin_listas@es.invalid> - 2025-05-15 14:06 +0200
Re: Mechanical or SSD for backup drive Paul <nospam@needed.invalid> - 2025-05-15 09:31 -0400
Re: Mechanical or SSD for backup drive Daniel70 <daniel47@eternal-september.org> - 2025-05-15 23:36 +1000
Re: Mechanical or SSD for backup drive ant@zimage.comANT (Ant) - 2025-05-15 23:26 +0000
Re: Mechanical or SSD for backup drive "...winston" <winstonmvp@gmail.com> - 2025-05-15 14:27 -0400
Re: Mechanical or SSD for backup drive Daniel70 <daniel47@eternal-september.org> - 2025-05-16 18:38 +1000
Re: Mechanical or SSD for backup drive Frank Slootweg <this@ddress.is.invalid> - 2025-05-16 14:51 +0000
Re: Mechanical or SSD for backup drive "...winston" <winstonmvp@gmail.com> - 2025-05-16 11:06 -0400
Re: Mechanical or SSD for backup drive micky <NONONOmisc07@fmguy.com> - 2025-04-21 12:08 -0400
csiph-web