Solid State vs Disc

thescreensavers

Diamond Member
Aug 3, 2005
9,916
2
81
The Advantage to an SSD is Speed. A Hard Drive has a mechanical Limit of Access time and read/write speeds where as SSDs do not as its all flash memory.

If you can afford it a 120gb SSD for Windows and commonly uses apps and a 500GB+ Data Hard Drive is a pretty nice setup.


Edit: doh Disadvantage ok..

There really isn't any disadvantage other than some reliability issues which are much better noadays.
 
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nwo

Platinum Member
Jun 21, 2005
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I can't really think of any other than cost.

I think one of the main initial disadvantages was that the SSD performance degrades over time. The more you use it, the quicker it degrades, but that doesn't seem to be a hot topic for discussion nowadays which makes me think that probably got that settled or at least minimized the impact of it.
 

86waterpumper

Senior member
Jan 18, 2010
378
0
0
one disadvantage to a solid state type drive, is that if the drive is not powered up for long periods the data can be at risk. How much of a risk this is varies depending on the type of flash chips used. This is not true for a spindle type drive unless it sits for years and years. You would have to be pretty rich to buy a few solid state drives and not even bother to plug them in for a year...but still just thought I'd throw it out there.

Another disadvantage I can think of is that solid state drives in general are not as tolerant to sudden loss of system power, crashes or maybe even just certain power supplies etc. I think all the ssd makers should put capacitors on the drives such as the crucial m500's have really. Hopefully with ocz going the way of the buffalo and more time for controller revisions etc reliability with the ssd will improve somewhat.
 
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PliotronX

Diamond Member
Oct 17, 1999
8,883
107
106
If they don't come with a drivebay adapter and your case does not have a 2.5" bay, you'll have to dangle it

Grasping at straws here, besides price there really isn't a drawback
 

kyrax12

Platinum Member
May 21, 2010
2,416
2
81
one disadvantage to a solid state type drive, is that if the drive is not powered up for long periods the data can be at risk. How much of a risk this is varies depending on the type of flash chips used. This is not true for a spindle type drive unless it sits for years and years. You would have to be pretty rich to buy a few solid state drives and not even bother to plug them in for a year...but still just thought I'd throw it out there.

Another disadvantage I can think of is that solid state drives in general are not as tolerant to sudden loss of system power, crashes or maybe even just certain power supplies etc. I think all the ssd makers should put capacitors on the drives such as the crucial m500's have really. Hopefully with ocz going the way of the buffalo and more time for controller revisions etc reliability with the ssd will improve somewhat.

I guess that's why SSD are more attractive to laptop users.
 

BrightCandle

Diamond Member
Mar 15, 2007
4,762
0
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- Cost
- Need power every ~ 6 months or they empty
- Performance degrades as they fill up (somewhat true on HDD as well)
- Lifetime is limited by flash rewrites, in some circumstances this is worse than basic reliability
- More complicated - they often get necessary firmware updates after release
- Write latency can be inconsistent especially under extreme load causing minor pauses
 

John Connor

Lifer
Nov 30, 2012
22,757
617
121
I think all the ssd makers should put capacitors on the drives such as the crucial m500's have really.


Not to derail, but the Crucial M500's have caps? I'm looking for a SATA III 240 GB or more. Caps would be nice.

I currently have an Adata 128 GB SSD and I have no grounded outlet. Well I opened my computer case and just touched the PSU and the whole computer shut down. But the SSD was fine thank God!
 

PliotronX

Diamond Member
Oct 17, 1999
8,883
107
106
Uh oh. I never heard that one and I've got a ssd backup thrown in a drawer......
It's an unfortunate reality that 1's hold a charge in the cell over a certain threshold that can fall naturally over time but there is no exact timeframe for when it occurs and it happens to different cells at different rates, no two SSD's are the same... the standard rule of thumb of backing up applies more than ever these days. At least it's extremely easy with massive HDD's being so inexpensive and NAS easily being in the hands of consumers as well as software so easy to set up a blind chimp could by accidentally dropping a banana peel on a keyboard.
 

BrightCandle

Diamond Member
Mar 15, 2007
4,762
0
76
An ssd works the same way as flash. It basically takes some electrons and pushes them through a resistive barrier behind which the charge will be held. But those electrons will still slowly escape eventually. I have an Intel x25 that went a year without power and retained its data, but officially they should be powered on and allowed time to refresh the cells frequently.
 

Cerb

Elite Member
Aug 26, 2000
17,484
33
86
Uh oh. I never heard that one and I've got a ssd backup thrown in a drawer......
Well, don't worry. Consumer flash is rated to retain data at around room temp for 1 year at its rated p/e cycles.

Any data storage medium should be checked up on. Just the same, HDDs stored on a shelf can lose data, but be fully operational. Even good DVD+Rs deserve to checked every year or two. And so on. You either pay to do tape, and store each of multiple copies in a climate-controlled storage facility, or you need to verify your backups' health periodically.
 

Mushkins

Golden Member
Feb 11, 2013
1,631
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I can't really think of any other than cost.

I think one of the main initial disadvantages was that the SSD performance degrades over time. The more you use it, the quicker it degrades, but that doesn't seem to be a hot topic for discussion nowadays which makes me think that probably got that settled or at least minimized the impact of it.

This was a decent concern when SSDs are new. With newer SSD technologies the average lifespan of an SSD under typical use is still longer than the average lifespan of a spinning disk drive. Odds are you're gonna replace either before it matters outside of an enterprise datacenter environment.
 

Mark R

Diamond Member
Oct 9, 1999
8,513
16
81
Yes. They only yodeled it from every mountaintop when they came out...
True. However, reliability testing of SSDs exposed to power outages, showed that having capacitor backup means nothing - capacitor equipped suffered from the same data corrupting power-loss firmware bugs as non-capacitor drives.
 

Dr-Kiev

Member
Apr 3, 2013
49
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0
www.angeldatarecovery.com
Are there ANY disadvantages to SSDs versus the traditional Hard Drives besides cost?

99% of user segment SSD drives based on cheap MLC and TLC Nands chips. This is most significant disadvantage , ssd can die in each moment due the NANDS common failures. Developers claimed it not true that SSD drives more weak, but they realy are. OCZ already went from this market -First epic fail of SSD manufacture . Number of drives came back by warranty was much more than they were expecting .
 

Cerb

Elite Member
Aug 26, 2000
17,484
33
86
Which is surprising, given all the RAM RMAs they were surely used to from their poor quality control measures, starting years before they got into SSDs ^_^. It probably took a fast and loose company like OCZ to spearhead all this, on the consumer side, but I don't think they will be missed, either. They weren't sunk by any issues from MLC NAND (I don't believe they ever got the TLC ones out to market), but by hyping too much, making sure first-time customers would not become repeat customers (why were Vertexes and Vectors dying so much more than 520s, 300s, M4s, M5Ss, 830s, 840s, and so on, FI?), and deceiving even their own shareholders at times.
 

Dr-Kiev

Member
Apr 3, 2013
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www.angeldatarecovery.com
(why were Vertexes and Vectors dying so much more than 520s, 300s, M4s, M5Ss, 830s, 840s, and so on, FI?), and deceiving even their own shareholders at times.

OCZ was very depend on SandForce Firmware.
CRC correction for old Vertex, Agility, Vectors was realy poor (ReedSolom) , and couldn't cover all the errors during reading nands. For the rest drives you mentioned, CRC correction BCH, which much more powerfull .
And even this doesn't help much , Samsung 830 Pro, Micron c400 (Van-Gogh), Intel 320 (Postville ) all of them can die on FW level , when CRC mechanism can't correct mistakes.
 

John Connor

Lifer
Nov 30, 2012
22,757
617
121
OCZ was very depend on SandForce Firmware.
CRC correction for old Vertex, Agility, Vectors was realy poor (ReedSolom) , and couldn't cover all the errors during reading nands. For the rest drives you mentioned, CRC correction BCH, which much more powerfull .
And even this doesn't help much , Samsung 830 Pro, Micron c400 (Van-Gogh), Intel 320 (Postville ) all of them can die on FW level , when CRC mechanism can't correct mistakes.


Sandforce has nothing to do with it. Intel uses Sandforece. I have two SSDs that are Sandforce; a G.Skill Sniper with a tera byte of data written to it and an Adata. So far they have been going strong.
 

VirtualLarry

No Lifer
Aug 25, 2001
56,554
10,171
126
Sandforce has nothing to do with it. Intel uses Sandforece. I have two SSDs that are Sandforce; a G.Skill Sniper with a tera byte of data written to it and an Adata. So far they have been going strong.

i wouldn't be so quick to dismiss the "SandForce factor" with OCZ SSDs. Sure, SandForce controllers may be (relatively) safe to use, now, but back then, with immature firmware, SandForce was a pure disaster.
 

sequoia464

Senior member
Feb 12, 2003
870
0
71
but by hyping too much, making sure first-time customers would not become repeat customers

Case in point; I had a couple of Vertex 2's, since then I have bought eleven more SSD's - none of those were OCZ's .
 
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