IBM SSA - Manual

IBM SSA

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Table of Contents:

  • Page 2 – I B M C o r p o r a t i o n
  • Page 3 – Preface
  • Page 5 – Contents
  • Page 6 – Electrical Interface
  • Page 7 – Vibration a n d Shock; Bibliography
  • Page 10 – bits read
  • Page 11 – All specifications are n o m i n a l values unless otherwise noted.; Data transfer rates; Average; Disks
  • Page 12 – Sum of all Notches
  • Page 13 – T a b l e 1. G r o s s sectors p e r t r a c k for several block lengths
  • Page 15 – Power Requirements by Model; Input Voltage; P o p u l a t i o n; Power Supply Current; N o t e s; Drive power
  • Page 16 – Example 1. Calculate the mean 12 volt average current.
  • Page 17 – Example 4. Calculate the 12 volt peak current.; Things to check when measuring 12 V supply current:
  • Page 18 – F i g u r e 1. 5 volt current during read/write operations — C 1x M ode ls
  • Page 19 – F i g u r e 2. Typical 12 volt c u r r e n t — C 1 x M o d e l s
  • Page 20 – F i g u r e 3. Typical 12 volt spin-up current — C1x M o d e l s; Current drops off as m o t o r comes u p t o speed.
  • Page 21 – Read/Write Base Line is 290 m a higher. Idle
  • Page 24 – F i g u r e 4. 5 volt current during read/write operations — C 2x M ode ls
  • Page 25 – F i g u r e 5. Typical 12 volt c u r r e n t — C 2 x M o d e l s
  • Page 26 – F i g u r e 6. Typical 12 volt spin-up current — C2x M o d e l s
  • Page 30 – F i g u r e 7. 5 volt current during read/write operations — C 4x M ode ls
  • Page 31 – F i g u r e 8. Typical 12 volt c u r r e n t — C 4 x M o d e l s
  • Page 32 – F i g u r e 9. Typical 12 volt spin-up current — C4x M o d e l s
  • Page 33 – T o enable the D C o u t p u t s , this line m u s t be at o r above 2.4 volts.
  • Page 34 – Externally Generated Ripple; Grounding Requirements of the Disk Enclosure
  • Page 36 – F i g u r e 10. S t a r t T i m e D i a g r a m; I n all; T a b l e 3. Bring-up Sequence Times a n d Stop T i m e for C 1 x M o d e l s; Event; Spindle S t o p
  • Page 37 – T a b l e 4. Bring-up Sequence Times a n d Stop T i m e for C 2 x M o d e l s
  • Page 39 – Environment Definition
  • Page 40 – N o Seeks. T h e target L B A for all operations is the previous L B A + 64.; Command Execution Time; Seek; Values are p o p u l a t i o n averages, a n d vary as; Latency; T a b l e 6. O v e r h e a d Values
  • Page 41 – Data Transfer to/from Disk; Ins tantaneous D a t a Transfer R a t e
  • Page 42 – T a b l e 7. D a t a Sector T r a n s f e r R a t e s .; Data Transfer to/from S S A Link; However, data transfer t o the link from the data
  • Page 43 – time for 1 cyl + track skews + 1 cyl skew; Approximating Performance for Different Environments
  • Page 44 – Seek a n d Latency m a y o r m a y n o t be reduced
  • Page 45 – T h e time t o perform this a b o r t
  • Page 46 – T a b l e 8. O p t i m a l Cylinder Skew for several block lengths; n o t c h 1 is returned when the Active N o t c h is set t o 0.
  • Page 47 – T a b l e 9. T r a c k (or H e a d ) Skew for several block lengths; Idle Time Functions
  • Page 48 – T h e using system also has the o p t i o n of forcing execution at
  • Page 49 – T a b l e 10. S u m m a r y of Idle T i m e F u n c t i o n P e r f o r m a n c e I m p a c t s; Command Timeout Limits
  • Page 50 – Medium Access Command Time:; T h e drive should be allowed a m i n i m u m of 5 seconds t o complete
  • Page 51 – C4C Models; T h e drive can be m o u n t e d with any surface facing d o w n .
  • Page 52 – F i g u r e 11. L o c a t i o n of Side M o u n t i n g H o l e s of C 1 C & C 2 C M o d e l s
  • Page 53 – F i g u r e 12. L o c a t i o n of Side M o u n t i n g H o l e s of C 4 C M o d e l s
  • Page 54 – ) T h e p u r p o se of this drawing is t o show the b o t t o m hole pattern.; F i g u r e 13. L o c a t i o n of B o t t o m M o u n t i n g H o l e s of C x C M o d e l s
  • Page 57 – C4B Models; Refer t o Figure 15 o n page 58 for detailed dimensions.
  • Page 58 – F i g u r e 15. D i m e n s i o n s — C x B M o d e l s
  • Page 59 – F i g u r e 16. H a n d l e D o c k i n g a n d Ejection System
  • Page 60 – Note 2: T h e I B M p a r t n u m b e r of the auto-docking side rails is 36G6422.
  • Page 61 – F i g u r e 17. Side R a i l Positioning
  • Page 62 – Electrical Connector and Indicator Locations
  • Page 63 – SSA Unitized Connector
  • Page 64 – T a b l e 11. Electrical C o n n e c t o r C o n t a c t Assignments — C x C M o d e l s; Carrier Connector; Pin; Programmable 1; F i g u r e 20. C a r r i e r Interface Receptacle
  • Page 65 – T a b l e 12. Electrical C o n n e c t o r C o n t a c t Assignments — CxB M o d e l s; Row
  • Page 66 – SSA Link Electrical Characteristics; This pin is n o t accessible o n C x B models.
  • Page 67 – This pin is n o t accessible o n C x B model.
  • Page 68 – This pins is n o t accessible externally o n C x B models.; Front Jumper Connector
  • Page 69 – Spindle Synchronization; Spindle synchronization is disabled.
  • Page 73 – Error reporting; N o isolation t o sub-assemblies within the device are specified.; Probability of not recovering data; Recoverable read errors; bits read (measured at nominal D C conditions a n d r o o m; Probability of miscorrecting unrecoverable data; - 730 power o n hours per m o n t h
  • Page 74 – - 500 power o n hours per m o n t h; Maximum on/off cycles; Years
  • Page 75 – T a b l e 13. P r o j e c t e d failure rates for the electronics only.; Install Defect Free; Application; L A vintage
  • Page 76 – Install Defect Free percentage; Periodic Maintenance; N o n e required; Connector Insertion Cycles; Maximum Insertion/Removal Cycles (for hot and normal insertion) 25
  • Page 77 – below condensation
  • Page 78 – T a b l e 15. M a x i m u m a n d Reliability O p e ra t i n g T e m p e r a t u r e Limits; Maximum
  • Page 79 – ) Center thermocouple o n the t o p surface of the module.; Vibration and Shock; “Clearances” o n page 51
  • Page 80 – axis should decrease significantly for frequencies above 300 hz.
  • Page 81 – T a b l e 16. R a n d o m Vibration Levels; Class
  • Page 82 – Translational Shock; T a b l e 17. N o n - o p e r a t i n g V i b r a t i o n Levels; Frequency
  • Page 83 – Upper Limit Sound Power Requirements (Bels) for C1x & C2x Models
  • Page 86 – C S P R Requirements
  • Page 87 – Serial Storage Architecture S S A - P H ( T r a n s p o r t
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OEM FUNCTIONAL SPECIFICATION

ULTRASTAR XP (DFHC) SSA MODELS

1.12/2.25 GB - 1.0" HIGH

4.51 GB - 1.6" HIGH

3.5 FORM FACTOR DISK DRIVE

VERSION 5.0

August 15, 1995

Publication n u m b e r 3304

I B M Corporation

Source f i l e n a m e = S T S S H E X T

I B M C o r p o r a t i o n

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Summary

Page 2 - I B M C o r p o r a t i o n

U S E R R E S P O N S I B L E F O R V E R I F Y I N G V E R S I O N A N D C O M P L E T E N E S S O E M F U N C T I O N A L S P E C I F I C A T I O N U L T R A S T A R X P ( D F H C ) SSA M O D E L S 1.12/2.25 G B - 1.0" H I G H This d o c u m e n t is preliminary a n d the contents are subject ...

Page 3 - Preface

U S E R R E S P O N S I B L E F O R V E R I F Y I N G V E R S I O N A N D C O M P L E T E N E S S O E M F U N C T I O N A L S P E C I F I C A T I O N U L T R A S T A R X P ( D F H C ) SSA M O D E L S 1.12/2.25 G B - 1.0" H I G H Preface T h i s d o c u m e n t details the p r o d u c t hardware ...

Page 5 - Contents

U S E R R E S P O N S I B L E F O R V E R I F Y I N G V E R S I O N A N D C O M P L E T E N E S S O E M F U N C T I O N A L S P E C I F I C A T I O N U L T R A S T A R X P ( D F H C ) SSA M O D E L S 1.12/2.25 G B - 1.0" H I G H Contents 1.0 Description . . . . . . . . . . . . . . . . . . . . . ...

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