After using a 500GB Time Capsule for Time Machine backups for awhile, I noticed increasing duration of the backups. Mainly the prepare and post-processing phases, and transfer of large number of small files, took a lot of time. For the transfer of large files, the slowdown was not so noticeable.I inspected the sparsebundle disk image on the Time Capsule, and inside the disk image bundle of about 150GB, I found nearly 20,000 band files of 8MB each in a single folder. These 20,000 data pieces contain the data of the backup image. When Time Machine reads, creates or deletes folder structures in the backup image, the operating system must randomly access data distributed over these 20,000 band files. And that causes a remarkable amount of additional administrative accesses to the AppleShare volume of the Time Capsule.I decided that a better size of the bands of the backup spa...
