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Apple Computing Products:
macOS - Apps and Programs
Disk Utility Creating Sparseimage & Sparsebundle Files Smaller Than Requested
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<blockquote data-quote="PGB1" data-source="post: 1826761" data-attributes="member: 76746"><p>Thank You Jake for experimenting with Sparse Bundle and for reporting your results. It was nice of you to take the time to do these things.</p><p></p><p>This afternoon, I reset the P-RAM because the system clock was haywire & could not be set to the correct time and date. After that, I was able to make a Sparse Image that held the capacity I chose for it. What the PRAM has to do with a sparse image is well beyond my understanding- or perhaps it was a coincidence. </p><p></p><p>Oddly, the Get Info showed a very small size instead of the full capacity. As I add test files, the get-info reports the new size. That behavior seems more like a Sparse Bundle than a Sparse Image. </p><p></p><p>I next tried again making a few Sparse Bundle images (folders?). </p><p>All is working fine now. Hooray!</p><p>This afternoon, I got the same results that Jake reported. </p><p></p><p>In the past, I have always used Encrypted Sparse Image for my financial items because my former offsite backup plan (CrashPlan) would corrupt previous versions of Sparse Bundles, but not Sparse Images.</p><p>The new plan (iDrive) seems to have no troubles with previous versions for the Sparse Bundle folders that I tested this afternoon. (Sparse Image either)</p><p></p><p>I think I will take advantage of Sparse Bundle's kinder and gentler personality and move my Financial stuff into an Encrypted Sparse Bundle and get rid of the Sparse Images.</p><p></p><p>It is nice that Time Machine can backup only changed blocks from Sparse Bundle images, instead of backing up the whole folder. That should speed things along & use less backup disk space. (I add to & change files on that Financial folder just about daily.)</p><p></p><p>I am curious, however, if Time Machine can still "see" inside a Sparse Bundle if it is Encrypted & back up only changed blocks. If I can figure out how to know, I'll be sure to test this out of curiosity.</p><p></p><p>I really doubt the offsite backup plan can "see" inside and, truthfully, hope it can not.</p><p></p><p>Thanks Again Jake for testing!</p><p>Paul</p></blockquote><p></p>
[QUOTE="PGB1, post: 1826761, member: 76746"] Thank You Jake for experimenting with Sparse Bundle and for reporting your results. It was nice of you to take the time to do these things. This afternoon, I reset the P-RAM because the system clock was haywire & could not be set to the correct time and date. After that, I was able to make a Sparse Image that held the capacity I chose for it. What the PRAM has to do with a sparse image is well beyond my understanding- or perhaps it was a coincidence. Oddly, the Get Info showed a very small size instead of the full capacity. As I add test files, the get-info reports the new size. That behavior seems more like a Sparse Bundle than a Sparse Image. I next tried again making a few Sparse Bundle images (folders?). All is working fine now. Hooray! This afternoon, I got the same results that Jake reported. In the past, I have always used Encrypted Sparse Image for my financial items because my former offsite backup plan (CrashPlan) would corrupt previous versions of Sparse Bundles, but not Sparse Images. The new plan (iDrive) seems to have no troubles with previous versions for the Sparse Bundle folders that I tested this afternoon. (Sparse Image either) I think I will take advantage of Sparse Bundle's kinder and gentler personality and move my Financial stuff into an Encrypted Sparse Bundle and get rid of the Sparse Images. It is nice that Time Machine can backup only changed blocks from Sparse Bundle images, instead of backing up the whole folder. That should speed things along & use less backup disk space. (I add to & change files on that Financial folder just about daily.) I am curious, however, if Time Machine can still "see" inside a Sparse Bundle if it is Encrypted & back up only changed blocks. If I can figure out how to know, I'll be sure to test this out of curiosity. I really doubt the offsite backup plan can "see" inside and, truthfully, hope it can not. Thanks Again Jake for testing! Paul [/QUOTE]
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Disk Utility Creating Sparseimage & Sparsebundle Files Smaller Than Requested
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