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Barracuda ATA

Capacity:
Speed:
Average Seek Time:
 Cylinders:
Heads:
Sectors:

27.33 GB
7200 rpm
8 ms
1023
256
63


Installation Guide | Product Manual

 

Odd characters? Click here for help. A version of this specification with the linedraw characters approximated by text is available by clicking here.

                         SEAGATE TECHNOLOGY, INC.
                              1-800-SEAGATE
                          http://www.seagate.com
                            (C)opyright 1999



ST-327240A (Barracuda ATA 27240, Ultra ATA/66)

  浜様様様様様
   REAR VIEW 
  藩様様様様様
                  J2  40 pin I/O Cable Connection
                     pin-20 removed
                  
                              敖 [spare jumper on pins 5-7]
                              
       嬪様様様様 獲様様様様冤由様様1/陳陳陳陳\    TOP (HDA)
      裕::::::::::::::::::1 :: : :  0 0 0 0 獲
       塒様様様様様様様様様溶8獲獲獲獲青5GG12    BOTTOM
                                 
                                 青 Alternate Capacity (see below)
                                青陳 Reserved
            O=OFF, X=ON -->>  X-O陳陳陳 Master ON
                              O-O陳陳陳 Slave  OFF

                              X-X陳陳陳 Slave Present (when pins 7-8 ON
                                         used on Master drive)
                              O-X陳陳陳 Cable Select  (when pins 7-8 OFF)

   Alternate Capacity jumper sets the default cylinder translation
to 4092 to solve issues with certain BIOS that only auto-detect.
Total available sectors are still at full capacity as reported via
Identify Drive data words 52 - 61.  Third party partitioning software
may be needed to achieve full capacity if this option jumper is used.



                             ST-327240A
                            Barracuda ATA

       FORMATTED CAPACITY (MB) __________________27,333
       ACTUATOR TYPE ____________________________VOICE COIL
       CYLINDERS __PHYSICAL______________________
       HEADS ______PHYSICAL______________________8
       DISCS (3.5 in) ___________________________4
       MEDIA TYPE _______________________________THIN FILM
       HEAD TYPE ________________________________GMR
       RECORDING METHOD _________________________EPRML 16/17 ZBR
       INTERNAL TRANSFER RATE (Mbits/sec) _______up to 323
       EXTERNAL TRANSFER RATE (Mbytes/sec) ______up to 66.6
       PIO/DMA/UDMA MODE (max) __________________4/2/4
       DMA SUPPORT ______________________________EISA Type B
       SPINDLE SPEED (RPM) ______________________7200
       AVERAGE LATENCY (mSEC) ___________________4.16
       BUFFER ___________________________________512K
        Read/Write Multiple, Read Look-Ahead,
        Multi-Segmented
       INTERFACE ________________________________Ultra ATA/66
       SECTORS PER DRIVE (LBA mode) _____________53,385,552
       TPI (TRACKS PER INCH) ____________________16,420
       BPI (KBITS PER INCH) _____________________up to 305
       AVERAGE ACCESS (ms seek/read/write) ______/8.0/9.1
       SINGLE TRACK SEEK (ms seek/read/write) ___/0.9/1.6
       MAX FULL SEEK (ms seek/read/write) _______/14.5/17.5
       MTBF (power-on hours) Office _____________500,000
       SHOCK (G's, 11ms/2ms):
                operating (Read/Write) __________/63
                abnormal ________________________
                nonoperating ____________________/300
       ACOUSTICS (bels) (typ/max) _______________3.5/4.3
       POWER DISSIPATION (watts) ________________
       POWER REQUIREMENTS: +12V START-UP (amps) _2.2
       POWER MANAGEMENT (Watts):
                           ACTIVE _______________11.9
                           IDLE _________________6.83
                           STANDBY ______________1.0
       WRITE PRECOMP (cyl) ______________________N/A
       REDUCED WRITE CURRENT (cyl) ______________N/A
       LANDING ZONE (cyl) _______________________AUTO
       IBM AT DRIVE TYPE ________________________*

       Physical:
                    Height (inches/mm):   1.028/26.1
                    Width  (inches/mm):    4.02/101.8
                    Depth  (inches/mm):    5.78/147.0
                    Weight      (lb/g):     1.2/544

 * Set CMOS hard drive setup to Auto-Detect with LBA mode enabled. 

MAY REQUIRE FORMATTING AND PARTITIONING SOFTWARE TO ACHIEVE FULL 
CAPACITY.  ALSO, CHECK TO SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR 
"USER DEFINABLE" DRIVE TYPE AVAILABLE. (see below)

Possible translations:
                       This translation is generally acceptable, as
                       is, for non-DOS operating systems:
     16,383 cyl, 16 heads, 63 sectors = 8,455,200,780

                       DOS operating systems may require a translation
                       that uses larger values for the CMOS head
                       parameter which lowers cylinders below 1024:
       1023 cyl, 256 heads, 63 sectors = 8,447,459,328

                       Other FULL-CAPACITY solutions for DOS operating
                       systems include third-party drive preparation
                       software, system BIOS which supports LBA mode
                       or bios driven host adapters. Otherwise,
                       capacity may be limited to:
       1024 cyl, 16 heads, 63 sectors = 528,482,304


Some systems BIOS have capacity limitations. 
Types that have been identified are:
     a 2.113GB or 4095 cylinder limitation 
     a 3.262GB or 6322 cylinder limitation 
     a 4.22GB  or 8192 cylinder limitation
     a 8.45GB  Standard INT13 limitation (CHS[1024x256x63]x512)
and, if exceeded, may cause the system to hang during boot, 
capacity reduction or it can truncate or wrap the cylinders when 
auto-detect options set in the CMOS. FAT16 based operating systems
are also limited to 8.4GB.  New INT13 Extensions in BIOS and FAT32
based operating systems are both required to acheive full capacity.

DOS 16-bit FAT file system cannot access more than 2.147 Gbytes per 
partition.  FAT32 file system can create single partitions and
logical drives up to 2TB.

Already low-level formatted at the factory.

Seagate reserves the right to change, without notice, product
offerings or specifications. (07/02/99)

A copy of this specification file may be obtained by FTP at
ftp://ftp.seagate.com/techsuppt/at/ST327240.A.


 



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