Welcome to the MacNN Forums.

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

You are here: MacNN Forums > Software - Troubleshooting and Discussion > macOS > Any Downside of Using FileVault in 10.6.2+?

Any Downside of Using FileVault in 10.6.2+?
Thread Tools
schalliol
Mac Elite
Join Date: Oct 1999
Location: Carmel, IN, USA
Status: Offline
Reply With Quote
Mar 27, 2010, 09:41 PM
 
Early in FileVault's history, I heard reports of some data loss, and under 10.5.0 there were Time Machine issues. Assuming you don't forget the password, is there any downside of using FileVault other than a very slight performance degradation? I've used encrypted sparsebundles for the rare times I need to have some tax ids and account numbers, but many documents and would benefit from encryption in case a machine was stolen.

Basically, someone talk me out of turning it on...
iMac Late '15 5K 27" 4.0 Quad i7 24/512GB SSD OWC ThunderDock 2 Blu-Ray ±RW MBP '14 Retina 15" 2.6 16/1TB iPhone 7+ 128 Jet Black iPad Pro 128 + Cellular

FOR SALE: MP '06 Yosemite 8x3.0 24/240GB SSD RAID 0, 240GB SSD, 1.5TB HDD RAID 0, 1TB HDD, Blu-Ray±RW, Radeon HD 5770
     
imitchellg5
Posting Junkie
Join Date: Jan 2006
Location: Washington + Colorado
Status: Offline
Reply With Quote
Mar 27, 2010, 09:57 PM
 
From what I've heard it eats up massive amounts of hard disk space. Maybe someone else can comment.
     
schalliol  (op)
Mac Elite
Join Date: Oct 1999
Location: Carmel, IN, USA
Status: Offline
Reply With Quote
Mar 27, 2010, 10:27 PM
 
Hmm, that's interesting. I just went to click on it and was told that if I turned on FileVault that it would only backup via Time Machine when the account is logged out and I can't restore a single file (only a massive wipe and replace). These do seems like pretty big taxes for using FileVault. It might be worth doing. Right now I have open firmware password, password on wake and Orbicule's Undercover, but none of that will really protect the data.
iMac Late '15 5K 27" 4.0 Quad i7 24/512GB SSD OWC ThunderDock 2 Blu-Ray ±RW MBP '14 Retina 15" 2.6 16/1TB iPhone 7+ 128 Jet Black iPad Pro 128 + Cellular

FOR SALE: MP '06 Yosemite 8x3.0 24/240GB SSD RAID 0, 240GB SSD, 1.5TB HDD RAID 0, 1TB HDD, Blu-Ray±RW, Radeon HD 5770
     
mduell
Posting Junkie
Join Date: Oct 2005
Location: Houston, TX
Status: Offline
Reply With Quote
Mar 27, 2010, 11:35 PM
 
The "no TM backups while you're logged in" issue is fatal.
     
Goldfinger
Professional Poster
Join Date: Nov 2004
Location: Belgium
Status: Offline
Reply With Quote
Mar 28, 2010, 04:26 PM
 
To be honest I think that FileVault was a pretty useless feature from the beginning. There are more downsides to it than upsides. The Time Machine thing is very annoying. It will probably back up your entire home dir again and again, resulting in a huge and very slow backup every time. I won't do incremental backups since FileVault is essentially a disk image so TM sees it as one big file. (someone correct me if I'm wrong, but I'm pretty sure that's how it works). Also, if your FileVault image gets corrupted you lose your entire home folder.

Do you really need to encrypt everything in your home directory ? Why not make an encrypted (or multiple) disk image for those sensitive files. If you really need everything encryped then you'll just need to live with the downsides.

iMac 20" C2D 2.16 | Acer Aspire One | Flickr
     
Spheric Harlot
Clinically Insane
Join Date: Nov 1999
Location: 888500128, C3, 2nd soft.
Status: Offline
Reply With Quote
Mar 28, 2010, 04:31 PM
 
FileVault is a solution only where a total loss of data is preferable to someone else gaining access to it.
     
Art Vandelay
Professional Poster
Join Date: Sep 2002
Location: New York, NY
Status: Offline
Reply With Quote
Mar 28, 2010, 05:22 PM
 
Originally Posted by Goldfinger View Post
It won't do incremental backups since FileVault is essentially a disk image so TM sees it as one big file. (someone correct me if I'm wrong, but I'm pretty sure that's how it works).
No, starting with 10.5, FileVault uses a sparse bundle disk image. Sparse bundle disk images are comprised of disk image segments. So if you change one file, only the segment that contains the file will be backed up.
Vandelay Industries
     
Goldfinger
Professional Poster
Join Date: Nov 2004
Location: Belgium
Status: Offline
Reply With Quote
Mar 28, 2010, 05:51 PM
 
Originally Posted by Art Vandelay View Post
No, starting with 10.5, FileVault uses a sparse bundle disk image. Sparse bundle disk images are comprised of disk image segments. So if you change one file, only the segment that contains the file will be backed up.
Right, didn't know that sparsebundle images were built like that. Thanks for the info.

iMac 20" C2D 2.16 | Acer Aspire One | Flickr
     
schalliol  (op)
Mac Elite
Join Date: Oct 1999
Location: Carmel, IN, USA
Status: Offline
Reply With Quote
Mar 28, 2010, 09:09 PM
 
I decided to go ahead and go for it. The encryption didn't take that long initially, though it's taking an eternity (estimated 24 hours) to do the initial 200GB backup over gigabit ethernet while logged out. I saw that there's a way to hack the system to allow backup while logged in, but there are some downsides of doing that. I'll report back with my findings!
iMac Late '15 5K 27" 4.0 Quad i7 24/512GB SSD OWC ThunderDock 2 Blu-Ray ±RW MBP '14 Retina 15" 2.6 16/1TB iPhone 7+ 128 Jet Black iPad Pro 128 + Cellular

FOR SALE: MP '06 Yosemite 8x3.0 24/240GB SSD RAID 0, 240GB SSD, 1.5TB HDD RAID 0, 1TB HDD, Blu-Ray±RW, Radeon HD 5770
     
   
Thread Tools
 
Forum Links
Forum Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Top
Privacy Policy
All times are GMT -4. The time now is 07:40 PM.
All contents of these forums © 1995-2017 MacNN. All rights reserved.
Branding + Design: www.gesamtbild.com
vBulletin v.3.8.8 © 2000-2017, Jelsoft Enterprises Ltd.,