In remaining 12 months's 73 GB 10,000 RPM SCSI warmth, IBM changed into quite simply the remaining brand to deliver their entry into the channel. well-nigh a yr gave the impression to circulate between the generic availability of the Cheetah 73LP and the Ultrastar 73LZX, the latter most effective fitting greatly obtainable early this calendar yr. The beyond regular time unfortunately did not support massive Blue's force; counting on the application, disks from Maxtor and Fujitsu have been greater compelling.
IBM managed this speedy time-to-market through the utilization of decrease-means platters. while the flagship Cheetah 10K.6, Fujitsu's MAP3146, and the upcoming Maxtor Atlas 10k IV all make the most of four 36-gigabyte disks, the 146Z10 makes use of 6 platters that store simply under than 25 GB every. IBM specs the drives usual read are searching for times at 4.7 milliseconds. An eight-megabyte buffer and 5 12 months guarantee round out the kit.
there's been an awful lot hypothesis working rampant on the merger of IBM and Hitachi's tough disk divisions into a new separate entity. in accordance with their contacts at IBM, youngsters, the 146Z10 is still a pure big Blue product. the new business isn't anticipated to merge applied sciences or product plans unless the transition is complete.
The 146Z10 is likely one of the first Ultra320 SCSI drives to hit their testbed. Ultra320's most totally-touted characteristic, of route, is an increase within the throughput ceiling to 320 MB/sec. bear in mind that the current transfer expense champion, the Cheetah 15K.three, pushes 76 MB/sec in its outer sectors. whereas figures like these threaten Ultra2 SCSI's 80 MB/sec barrier, Ultra160's a hundred and sixty MB/sec limit continues a number of headroom. It is just in multi-drive situations that 160 MB/sec bottlenecks can arise. Their base power checks turn up with a single unit because the best energetic equipment on the host adapter. In the sort of setup, any performance benefits that Ultra320 (together with the requisite larger-bandwidth sixty four-bit PCI slots) would carry over one hundred sixty are negligible. For their efficiency assessments, we'll take advantage of the specification's backwards compatibility and run the force in Ultra160 mode off of their latest host adapter. keep in mind that superior bandwidth is just one of the merits that Ultra320 provides. a host of improvements in protocol and error correction should bring up information integrity and equipment interoperability to new stages.Low-degree consequences
For diagnostic purposes only, StorageReview measures the following low-degree parameters:
commonplace read entry Time- a regular of 25,000 random accesses of a single sector each and every performed through IPEAK SPT's AnalyzeDisk suite. The excessive sample size allows for a tons more correct studying than most regular benchmarks bring and provides a superb determine with which one may distinction the claimed entry time (claimed searching for time + the pressure spindle speed's commonplace rotational latency) provided by means of manufacturers.
WB99 Disk/study switch cost - start- The sequential switch expense attained by means of the outermost zones in the tough disk. The figure typically represents the highest sustained transfer expense a power delivers.
WB99 Disk/examine switch fee - conclusion- The sequential switch fee attained with the aid of the innermost zones in the complicated disk. The figure typically represents the lowest sustained transfer expense a power provides.
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observe: scores on excellent are greater.
The Ultrastar 146Z10 turns in an ordinary read entry time of 8.four milliseconds, a determine just a little on the excessive facet when contrasted with the competition. Subtracting 3 milliseconds to account for the typical rotational latency of a 10,000 RPM spindle speed yields a standard measured read are searching for time of 5.4 ms… neatly off big Blue's four.7 ms claim.
an average write access time of 8.7 milliseconds is nearer to that of competing drives. only Seagate's Cheetah 10K.6 manages to differentiate itself here.
notice: ratings on top are more desirable.
although it features a decrease areal density than some rivals (25 GB/platter vs 36/GB platter), the Ultrastar having said that turns in a respectable outer-zone switch rate of 65.1 MB/sec. as the verify moves inwards, despite the fact, the force reveals big decay with internal-zone quotes weighing in at just 36.2 MB/sec.Single-user efficiency
StorageReview uses the following tests to assess non-server use:
StorageReview.com office DriveMark 2002- A capture of half-hour of specific desktop productivity use that exactingly recreates a standard workplace-trend multitasking atmosphere. The applications include: Outlook XP, word XP, Excel XP, PowerPoint XP, Calypso (a freeware electronic mail customer), SecureCRT v3.three (a telnet/SSH client), CuteFTP professional v1.0 (an FTP/SSH client), ICQ 2000b), Palm Hotsync 4.0, Gravity 2.three (a Usenet/newsgroups customer), PaintShop seasoned v7.0, Media player v8 for the occasional MP3, and web Explorer 6.0.
StorageReview.com excessive-conclusion DriveMark 2002- A seize of VeriTest's content creation Winstone 2001 suite. purposes include Adobe Photoshop v5.5, Adobe choicest v5.1, Macromedia Director v8.0, Macromedia Dreamweaver v3.0, Netscape Navigator v4.seventy three, and Sonic Foundry Sound Forge v4.5. not like standard productivity functions, excessive-conclusion audio- and video- modifying courses are run in a more serial and fewer multitasked method. The high-end DriveMark includes tremendously extra sequential transfers and write (as opposed to examine) operations.
StorageReview.com Bootup DriveMark 2002- A capture of the quite unusual windows XP bootup process. windows XP's boot method involves significantly distinct entry patterns and queue depths than those found in different disk accesses. This examine recreates home windows XP's bootup from the initial bootstrap load all of the option to initialization and loading of here memory-resident utilities: Dimension4 (a time synchronizer), Norton Antivirus 2002 AutoProtect, Palm Hotsync v4.0, and ICQ 2000b.
StorageReview.com Gaming DriveMark 2002- A weighted standard of the disk accesses featured in five prevalent computer games: Lionhead's Black & White v1.1, Valve's Half-life: Counterstrike v1.3, Blizzard's Diablo 2: Lord of Destruction v1.09b, Maxis's The Sims: condo birthday party v1.0, and Epic's Unreal event v4.36. games, of path, are not multitasked- all 5 titles had been run in a serial fashion featuring about half an hour of play time per online game.
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be aware: rankings on properly are superior.computing device efficiency Graphs (in I/Os per second) SR high-end DriveMark 2002
StorageReview.com's office DriveMark 2002 pegs the Ultrastar 146Z10 at 433 IOs/sec. notwithstanding within astonishing distance of Seagate's Cheetah 10K.6, the 146Z10 cannot keep up with Fujitsu's class-main MAP3146.
This state of affairs plays itself out across all other computing device DriveMark suites. The SR Bootup DriveMark 2002, a test that features strangely excessive queue depths, is of certain observe. Fujitsu's MAP excels whereas the Ultrastar stumbles, yielding a giant margin of forty four%.Multi-person performance
StorageReview makes use of right here assessments to assess server efficiency:
StorageReview.com File Server DriveMark 2002- a mixture of synthetically-created reads and writes via IOMeter that attempts to mannequin the heavily random access that a dedicated file server experiences. individual tests are run below loads with 1 I/O, 4 I/Os, 16 I/Os, and 64 I/Os excellent. The Server DriveMark is a convenient at-a-look figure derived from the weighted normal of effects received from the four distinctive hundreds.
StorageReview.com web Server DriveMark 2002- a mix of synthetically-created reads through IOMeter that attempts to mannequin the closely random access that a dedicated internet server experiences. individual tests are run below hundreds with 1 I/O, 4 I/Os, sixteen I/Os, and 64 I/Os superb. The Server DriveMark is a handy at-a-glance determine derived from the weighted usual of results got from the four distinctive loads.
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be aware: rankings on suitable are more suitable.Server efficiency Graphs (in I/Os per second) SR File Server DriveMark 2002 SR web Server DriveMark 2002
IBM's pressure, whereas aggressive with the Atlas 10k III, cannot somewhat keep up with next-generation drives from Seagate and Fujitsu in multi-user situations.Legacy efficiency
eTesting Lab's WinBench ninety nine Disk WinMark assessments are benchmarks that try and measure computing device efficiency through a rather dated recording of excessive-stage functions. despite their age, the Disk WinMarks are just a little of an trade average. here effects serve best as a reference; SR doesn't factor them into closing judgments and recommends that readers do the same.
note: scores on proper are more desirable.Legacy performance Graphs (in megabytes per 2d) ZD company Disk WinMark ninety nine ZD high-end Disk WinMark 99 heat and Noise
Idle Noise- The sound force emitted from a power measured at a distance of 18 millimeters. The shut-box dimension permits for extended resolution between power sound pressures and eliminates interactions from backyard environmental noise. notice that whereas the size is an A-weighted decibel score that weighs frequencies in share to human ear sensitivity, a low rating does not necessarily predict even if or now not a force will demonstrate a excessive-pitch whine that some can also find intrusive. Conversely, a excessive score doesn't always point out that the drive reveals an intrusive noise envelope.
net drive Temperature- The optimum temperature recorded from a 16-point sample of a pressure's desirable plate after it has been below heavy load for 80 minutes. The figures provided are internet temperatures representing the difference between the measured drive temperature and ambient temperature.
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be aware: scores on top are stronger.Idle Noise (in dB/A @ 18mm) net drive Temperature (in degrees celsius)
There become a time when IBM SCSI drives have been renown for their quiet operation. The Ultrastar 9ES's mixture of decent velocity and quiet/cool operation involves mind.
Technical obstacles alas precluded SR from purpose sound force level measurements of the Ultrastar 146Z10. As described in their methodology article, they use an AT vigour give with its fan disabled to obtain as quiet an ambient ambiance as possible. The 146Z10, however, cannot be powered up without a reside host adapter connection which requires introduction of extra equipment that adversely impacts the ambient background.
Subjectively speaking, however, the force's idle noise is enormously greater than that exhibited by means of the Cheetah 10K.6 or the MAP3735. even though there is a sizeable high-pitched squeal, nearly all of noise is available in a midrange "hum." The 146Z10 additionally exhibits a recalibration activities corresponding to that of the Ultrastar 73LZX. each minute or so, when idle, the force screeches and chirps away for about a second, much greater intrusive than the power's ordinary are seeking for noise.
At 31.6 levels Celsius above ambient, the 146Z10's operating temperature weighs in radically larger than competing choices. One may still trust active cooling when integrating the pressure right into a equipment no longer housed in a committed server room.Reliability
The StorageReview.com Reliability Survey aims to amalgamate particular person reader experiences with quite a few tough disks right into a comprehensive warehouse of counsel from which meaningful effects can be extracted. A multiple-layer filter sifts through gathered records, silently omitting questionable results or outcomes from questionable participants. A proprietary analysis engine then techniques the certified dataset. SR gifts consequences to readers via a percentile ranking device.
in response to filtered and analyzed records accrued from collaborating StorageReview.com readers, the IBM Ultrastar 146Z10 is greater official than of the other drives within the survey that meet a undeniable minimal flooring of participation.
in keeping with filtered and analyzed records amassed from collaborating StorageReview.com readers, a predecessor of the IBM Ultrastar 146Z10, the IBM Ultrastar 73LZX , is greater reputable than of the other drives within the survey that meet a undeniable minimum ground of participation.
word that the odds in bold above may also trade as more assistance is still collected and analyzed. For more tips, to enter your experience with these and/or other drives, and to view complete outcomes, please consult with the SR drive Reliability Survey.Conclusion
We're disenchanted to record that they cannot advocate the Ultrastar 146Z10. Fujitsu's MAP3146 offers more advantageous performance, lower heat and noise degrees, and a decrease platter count. Excepting company loyalty, there isn't a cause to select the Ultrastar over Seagate's Cheetah 10K.6 and particularly over the Fujitsu.