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- Path: rcfnews.cs.umass.edu!barrett
- From: rkruszka@carroll1.cc.edu (Randy Kruszka)
- Newsgroups: comp.sys.amiga.reviews
- Subject: REVIEW: Western Digital Caviar AC31200F hard drive
- Followup-To: comp.sys.amiga.hardware
- Date: 9 Nov 1995 17:27:42 GMT
- Organization: The Amiga Online Review Column - ed. Daniel Barrett
- Lines: 302
- Sender: amiga-reviews@math.uh.edu (comp.sys.amiga.reviews moderator)
- Distribution: world
- Message-ID: <47tdme$7kc@kernighan.cs.umass.edu>
- Reply-To: rkruszka@carroll1.cc.edu (Randy Kruszka)
- NNTP-Posting-Host: astro.cs.umass.edu
- Keywords: hardware, storage, hard drive, IDE, commercial
- Originator: barrett@astro.cs.umass.edu
-
-
- PRODUCT NAME
-
- Western Digital Caviar AC31200F, Version 14.0
-
-
- BRIEF DESCRIPTION
-
- This is an Enhanced-IDE 1.222GB (AmigaDOS) 1.282GB (WD) 3.5"H 10ms
- 4500 rpm 64KB cache hard drive with 250000 Hours MTBF. (Whew!)
-
-
- AUTHOR/COMPANY INFORMATION
-
- Name: Western Digital Corporation
- Address: 8105 Irvine Center Drive
- Irvine, California 92718
- USA
-
- Telephone: (714) 932-5000
- (714) 932-4900 [Tech support]
-
- World Wide Web: http://www.wdc.com
-
-
- LIST PRICE
-
- I don't know what the list price is, but I paid $290 US without
- shipping in October 1995.
-
-
- SPECIAL HARDWARE AND SOFTWARE REQUIREMENTS
-
- HARDWARE
-
- An IDE host interface.
-
- The Amiga has a 2GB partition limit.
-
- SOFTWARE
-
- I recommend AmigaDOS 3.1 because I heard that it solves the
- initial "insert disk" screen on power-up.
-
-
- MACHINE USED FOR TESTING
-
- Amiga 4000, 2MB Chip RAM, 16MB Fast RAM.
- 1 internal 1.76MB floppy drive
- Emplant Deluxe
- GVP I/O Extender
- Kickstart and Workbench 3.0.
-
-
- INSTALLATION
-
- If your computer is still under warranty, you should first check to
- see if opening it will cause warranty claim problems. Make sure that you do
- not have any static electricity on yourself, and that you do not rush this.
- I still consider all drives to be pretty fragile. If you do not feel
- confident, let someone else do the installation.
-
- That said, I removed the two screws on the back of the A4000 and slid
- the cover off. The drive mount can be used for two 3.5"H drives if you
- want, and removes with 4 screws. I mounted the WD drive in place of the
- Seagate and just set the Seagate on top of the manual while I copied files
- over. I figured the fastest way would be to make the WD the Master and
- Seagate the Slave, and then when you are done you can remove the Seagate and
- make the WD the only drive. If this is an addition, you just have to move
- the jumper on both drives to let the interface know you have two drives.
- For you Seagate users, you could leave the 124MB drive in but it resets so
- slow that the Amiga must wait for it. It is a mere 10% of the WD anyway, so
- there's not much to be gained.
-
- Partitioning it with HDToolbox was interesting...yes, I'll call it
- that! I wanted 4 slices, and found out that after the first partition was
- even numbered the rest wanted to be odd. After some sliding around I had:
- 20M (20.18) 300M (300.73) 300M (300.23) 600M (600.47) = 1220M (1221.6).
- ()=Actual size since AmigaDOS truncates decimals. 1MB=1024000 Bytes. I
- don't know how WD gets 1282MB. To confuse you further, SysInfo reports 1222
- MB and HDToolbox 1222.1 MB. The "info" command lists the above ().
-
-
- REVIEW
-
- Now for the info you have been waiting for! My original idea was to
- get something like the Seagate Barracuda and WarpEngine. It would be so
- fast that it would get done before I even start! :) Then I added up the
- prices... :( Then I found out that WD says "100% IDE compatibility". And at
- $290 US, :) :) :)
-
- Since the A4000's interface is IDE and not EIDE, you will not get the
- 5.26MB/s maximum transfer rate that WD says you will. However, SysInfo
- reports 1.67MB/s (a nice change from the Seagate ~1MB/s) and I included the
- Seagate vs. WD info below on V4.2 DiskSpeed & ScsiSpeed.
-
-
- SCSISPEED RESULTS
-
- (Using FFS-International)
-
- Comments: ScsiSpeed 4.2 Started from Project Icon
-
- CPU Speed Rating: 3549 *Seagate 124MB*
-
-
- Testing with a 512 byte, MEMF_FAST, LONG-aligned buffer.
- Read from SCSI: 145002 bytes/sec | CPU Available: 79%
-
- Testing with a 4096 byte, MEMF_FAST, LONG-aligned buffer.
- Read from SCSI: 197688 bytes/sec | CPU Available: 84%
-
- Testing with a 32768 byte, MEMF_FAST, LONG-aligned buffer.
- Read from SCSI: 804454 bytes/sec | CPU Available: 46%
-
- Testing with a 262144 byte, MEMF_FAST, LONG-aligned buffer.
- Read from SCSI: 1030317 bytes/sec | CPU Available: 33%
-
- Testing with a 512 byte, MEMF_CHIP, LONG-aligned buffer.
- Read from SCSI: 150392 bytes/sec | CPU Available: 73%
-
- Testing with a 4096 byte, MEMF_CHIP, LONG-aligned buffer.
- Read from SCSI: 257919 bytes/sec | CPU Available: 73%
-
- Testing with a 32768 byte, MEMF_CHIP, LONG-aligned buffer.
- Read from SCSI: 678297 bytes/sec | CPU Available: 38%
-
- Testing with a 262144 byte, MEMF_CHIP, LONG-aligned buffer.
- Read from SCSI: 795165 bytes/sec | CPU Available: 29%
-
- Average CPU Available: 57% | CPU Availability index: 2023
-
-
- CPU Speed Rating: 3549 *WDC 1.2GB*
-
-
- Testing with a 512 byte, MEMF_FAST, LONG-aligned buffer.
- Read from SCSI: 515993 bytes/sec | CPU Available: 33%
-
- Testing with a 4096 byte, MEMF_FAST, LONG-aligned buffer.
- Read from SCSI: 1453875 bytes/sec | CPU Available: 11%
-
- Testing with a 32768 byte, MEMF_FAST, LONG-aligned buffer.
- Read from SCSI: 1625292 bytes/sec | CPU Available: 8%
-
- Testing with a 262144 byte, MEMF_FAST, LONG-aligned buffer.
- Read from SCSI: 1652222 bytes/sec | CPU Available: 9%
-
- Testing with a 512 byte, MEMF_CHIP, LONG-aligned buffer.
- Read from SCSI: 445235 bytes/sec | CPU Available: 25%
-
- Testing with a 4096 byte, MEMF_CHIP, LONG-aligned buffer.
- Read from SCSI: 1023385 bytes/sec | CPU Available: 8%
-
- Testing with a 32768 byte, MEMF_CHIP, LONG-aligned buffer.
- Read from SCSI: 1204224 bytes/sec | CPU Available: 3%
-
- Testing with a 262144 byte, MEMF_CHIP, LONG-aligned buffer.
- Read from SCSI: 1232245 bytes/sec | CPU Available: 2% <-- Ouch!
-
- Average CPU Available: 12% | CPU Availability index: 426
-
-
- Summary: It maxes out the IDE interface and nearly stops the CPU as
- a result. I heard this has something to do with how IDE works. You can be
- pretty safe assuming that this is the limit for the A4000 IDE.
-
-
- DISKSPEED RESULTS
-
- Device: hd1: Buffers: 30 *Seagate 124MB*
- Comments: DiskSpeed 4.2 Started from Project Icon
-
- CPU Speed Rating: 3105
-
- Testing directory manipulation speed.
- File Create: 34 files/sec | CPU Available: 78%
- File Open: 73 files/sec | CPU Available: 62%
- Directory Scan: 314 files/sec | CPU Available: 50%
- File Delete: 208 files/sec | CPU Available: 36%
-
- Seek/Read: 74 seeks/sec (13.5ms) | CPU Available: 86%
-
- Average CPU Available: 62% | CPU Availability index: 1925
-
-
- Device: hd2: Buffers: 30 *WDC 1.2GB*
-
- CPU Speed Rating: 3105
-
- Testing directory manipulation speed.
- File Create: 49 files/sec | CPU Available: 72%
- File Open: 99 files/sec | CPU Available: 54%
- Directory Scan: 551 files/sec | CPU Available: 11%
- File Delete: 332 files/sec | CPU Available: 12%
-
- Seek/Read: 114 seeks/sec (8.8ms) | CPU Available: 80%
-
- Average CPU Available: 46% | CPU Availability index: 1428
-
- Summary: I expected it to be faster everywhere and use more CPU
- again, but 8.8ms access time??? If this is true, apparently it is not
- affected by the "slow" interface. I believe that it is, since an EIDE-IBM
- friend saw as low as 7.5ms. 10ms looks conservative.
-
-
- DOCUMENTATION
-
- It comes with documentation which has some useful specifications in
- it, along with jumper and installation instructions, but most of it is
- Windows NT, '95, UNIX, etc. specific. Their WWW site has the best stats.
- You also get a disk to get you beyond the 528MB IBM-BIOS limit, which isn't
- necessary for the A4000.
-
- If you can install the drive without reading the manual, it probably
- won't be that useful. But, you can read all of the trouble you'd have to go
- thorough to get it working on an IBM. Maybe my struggles with getting
- HDToolbox to use the whole drive equaled it anyway...
-
-
- LIKES
-
- This drive is mass storage at a nice price. It does not need a new
- interface, and actually reports the drive information properly. The 100%
- IDE compatibility seems to be true. It is quieter and uses less power than
- the Seagate 124MB, but is a little noisier during reads. The 3 year
- warranty is nice, but if you need to use it with 1.2GB you won't be too
- happy! It resets very quickly after the Ctrl-A-A sequence, basically a
- blink-pause-blink read.
-
-
- DISLIKES AND SUGGESTIONS
-
- It spins-up slower than the Seagate so my un-upgradeable KS 3.0 times
- out too soon and shows the "insert disk" screen on power up. This is not
- WD's fault, and Commodore fixed it in KS 3.1. This would be my only
- suggestion for improvement.
-
-
- COMPARISON TO OTHER SIMILAR PRODUCTS
-
- There are other drive test reports on math.uh.edu so I won't repeat
- them here. If the IDE interface could handle it, I would guess that the
- only drive currently faster than this one is the 1.6GB WD.
-
- Just for your information (it did not change my mind) at one local
- computer store they told me not to get WD since they tend to stall often.
- They recommended the "8ms" Samsung for $239 US. Statistics would tell you
- that if this were true, WD probably sells 100 (or more) drives to every
- Samsung. My IBM friend sells WD drives with many upgrades he does and has
- not seen one problem. Interestingly enough, after I saw the Samsung manual
- it said 11ms. So guess what... they measured it and took the lowest number
- they saw.
-
-
- BUGS
-
- None found. The maxtransfer bug on some IDE drives is not on this
- one. I was wondering if that bug had to be there for 100% compatibility!
- It supports the "sleep" command also. My Seagate did not.
-
-
- VENDOR SUPPORT
-
- None needed. I hope it stays that way.
-
-
- WARRANTY
-
- The product warranty is 3 years. It covers only the drive itself,
- and the repaired drive's warranty will be either the remainder of the
- original warranty or 90 days - whichever is longer. Claims must be made
- within 90 days of the defect's discovery, but I'm not sure why anyone would
- want to wait. It does not say that the warranty isn't transferable. It
- does say "within 3 years from the Buyer's date of purchase from ...
- dealer". It does not specifically say that it is, either. You may need a
- lawyer to decide. :)
-
-
- CONCLUSIONS
-
- I'd say that the drive would get 5/5 stars, and the Commodore
- interface 2/5 stars! It is equal to or better than what I expected. I
- thought that I'd be seeing at least 2MB/s transfer rates since the A1200
- gets a similar speed, but it's not the drive's fault.
-
- If you are looking for a larger than 1GB drive (which someday may be
- made to run much faster) at a good price, this is it.
-
- COPYRIGHT NOTICE
-
- Copyright 1995 Randy Kruszka.
- Email: rkruszka@carroll1.cc.edu
-
-
- ---
-
- Accepted and posted by Daniel Barrett, comp.sys.amiga.reviews moderator
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