Utility Suite for Mac OS X:
3 Great Applications in One
diglloydTools Utility Suite for Mac OS X: DiskTester, MemoryTester, IntegrityChecker - Ensure maximum, trouble free performance, and data integrity with this power set of tools.
Written and designed by Lloyd Chambers, author of Mac compression utilities DiskDoubler™ and AutoDoubler™
DiskTester is performance testing software for your hard drives and solid state drives, especially RAID. DiskTester will tell you how your drives are performing, force the drive to map out bad sectors, and help flush out problems. DiskTester can also recondition an SSD quickly and conveniently.
MemoryTester enables you to stress-test your memory and Mac before you put it into "production" use. It helps prove that the machine and memory are reliable. No other tool can push the machine to its limits like MemoryTester can.
IntegrityChecker enables you to verify your files and backups, detecting even single-bit errors. With IntegrityChecker, you can
be sure that the files you have copied, backed-up or restored are perfect, even years later.