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Configuring Scannerz for testing.
Scannerz can be configured to stop testing if a certain number of errors or irregularities are detected. It also allows the user to suspend the meta data server (mds process used by Spotlight and Time Machine to index a drive) during testing because that may interfere with some of the critical timing measurements Scannerz obtains. Time Machine may also be disabled because you really don't want a Time Machine session kicking in when you're testing your drive. Finally, termination options allow you to put the system to sleep or shut it down at the conclusion of testing. This is particularly useful for people testing large drives overnight.
Scannerz in the process
of performing a Normal Mode test on a hard drive.
Normal mode tests are where Scannerz does it's real work on a system. During a normal mode test, Scannerz will be not only looking at the hard drive or SSD for bad or marginal blocks, it will also be collecting data about the drive's interface subsystem, monitoring logic board timing and activity, looking for abnormal timeout events, and recording any other abnormal events that may indicate problems.
Scannerz resuming a test that was stopped earlier by the user.
Scannerz has the capability to stop, start, and resume tests. If you have a big hard disk you want to evaluate, testing to completion may be very time consuming. WIth Scannerz, you can start, stop, and resume your tests at your leisure. No need to lock the system up for hours on end. Several of our customers have their employees use this feature once a month over several lunch hours to ensure their systems are OK without having to tie the system down when they really need it for work.
Scannerz Diagnostics Mode Being Configured.
Diagnostics Mode is used to analyze any errors and irregularities detected during a Normal Mode test, perform interface tests, and perform memory/system bus tests.
Errors and irregularities detected
during a Normal Mode test can indicate not only bad blocks or
sectors on a hard drive or SSD, they can also indicate system
time outs, bad cables, RAM problems, and logic board problems.
The "Analyze Errors and Irregularities" option will tell you
whether the problems are really with the drive, or whether
they're actually being caused by something else and may direct
you to configure and perform more Diagnostics Mode tests.
If problems are suspected with the interface between the drive and the system, then the "Perform Interface Tests" option is selected. If problems are suspected to be related to either the system RAM or logic board, then the "Perform Memory Tests" option is selected.
In the screen shot above, the logic board/RAM or the drive interface is the suspect, so it's being configured to perform both of these tests.
Diagnostics Mode running with the logging window up.
Scannerz has a logging window that will display information being written to the log files in real time. The logging window may be used in any of the three modes of testing that Scannerz provides. In this case we're looking at a Diagnostics Mode test on an interface between a hard drive and the system.
Diagnostics Mode testing for a a bad cable on an internal hard drive.
This is a screen shot of the basic Diagnostics Mode test display. The display will tell you whether or not the problems are with the hard drive or SSD ("Confirmed Weak Block Count," "Confirmed Bad Block Count," or "Seek Errors") or the logic board and support components ("Probable System Faults," "Memory Errors," and "Interface Errors").
System faults are often very serious (meaning they're usually a logic board problem of some sort) but may be related to a poorly seated component with the system. If you run Scannerz and get system faults, don't assume the logic board is dead, re-seat all components plugged into it first!
The Logging window may be brought up in any tests to provide details about tests. In this screen capture, Scannerz is in Diagnostics Mode and evaluating a drive with some obvious problems.
In this case Scannerz is confirming beyond a reasonable doubt that the problems are related to a hard drive. It is not uncommon for a drive with bad sectors to be surrounded by weak sectors (those that are readable, but only after a long time). In the screen shot above, the three sectors shown are taking several seconds to be read. This should really be done in a manner of milliseconds or microseconds, not seconds. This is why the user's system was bottle necking and showing the infamous "spinning beach balls."
Cursory Mode tests being configured.
Cursory Mode can be used to do a quick evaluation of a drive or put the system into user configurable tests to help isolate problems.
Core Storage and RAID unit segregation.
Core Storage and RAID units (exposable) can be difficult to identify with some applications. Scannerz allows you group RAID and Core Storage units into component member units. An "exposable" RAID unit is one that will actually report all drive members to the operating system. Some RAID units will only report the device as a stand alone drive.
The Normal Mode summary report gives an overall view of tests results and historical analysis.
Normal Mode tests using Scannerz record the history of the drive's performance and test results. Significant deviations in performance can identify problems that other tools on the market aren't even capable of detecting. "RPI" is an abbreviation for "Relative Performance Index." Sudden changes in an RPI level may indicate problems are beginning to appear with the drive, even though there may be no other indications of it by any other type of testing.
To purchase one of the Scannerz packages, click on the Buy Scannerz Now button below.
$21.95 For Scannerz Lite
$39.95 For Scannerz with FSE-Lite, Performance Probe, and Phoenix
$49.95 For a Scannerz with FSE, Performance Probe, and Phoenix
Scannerz, Scannerz Lite, FSE, FSE-Lite, Performance Probe 2,
Phoenix, SpotOff, and Spot-O-Meter are Mac OS X universal
binaries and support both Intel and PowerPC G4 and G5 based
systems using Mac OS X versions 10.5 (Leopard), 10.6 (Snow
Leopard), 10.7 (Lion), 10.8 (Mountain Lion), 10.9 (Mavericks),
10.10 (Yosemite), and 10.11 (El Capitan). PowerPC based systems must use Mac OS X
Supported Intel based systems include all variants of the MacBook, MacBook Air, MacBook Pro, iMac, Mac Pro, and Mac Mini. Supported PowerPC based systems must be running MacOS 10.5 (Leopard) and include the iBook, Power Mac, eMac, iMac, Mac Mini, and PowerBook G4 Series.