Cylinder/Track/Sector Sizing for Volumes on Sun Storage[TM] 2500 and 6000 Arrays

Asset ID:	1-71-1006833.1
Update Date:	2009-12-13
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Solution Type Technical Instruction Sure

Solution 1006833.1 : Cylinder/Track/Sector Sizing for Volumes on Sun Storage[TM] 2500 and 6000 Arrays

Related Items


Sun Storage 6540 Array
 Sun Storage Flexline 280 Array
 Sun Storage 2510 Array
 Sun Storage 2530 Array
 Sun Storage 2540 Array
 Sun Storage 6130 Array
 Sun Storage 6140 Array
 Sun Storage Flexline 240 Array
 Sun Storage Flexline 380 Array

Related Categories


GCS>Sun Microsystems>Storage - Disk>Modular Disk - 2xxx Arrays
 GCS>Sun Microsystems>Storage - Disk>Modular Disk - 6xxx Arrays
 GCS>Sun Microsystems>Storage - Disk>Modular Disk - Flexline FLX FLA FLC Arrays

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Description
This document describes the cylinder, track, and sector size ratios for Sun Storage[TM] 2500 and 6000 Arrays. This is useful when comparing the size between these arrays and other array models.

For Solaris[TM] Operating System (OS), this is especially important, since disk label partitioning for non-EFI labels is performed on a cylinder boundary. That means that migration or mirroring plans must take into account the disk geometry provided by an array.

Steps to Follow
Cylinder/Track/Sector Sizing for Volumes

The Cylinder/Track/Sector ratios vary according to the following table:

Volume Size Range(GB)	Tracks per Cylinder	Sectors per Track
0 - 127	64	64
128 - 255	128	64
256 - 511	256	64
512 - 1023	512	64

Note1: A sector is 512-bytes. This is also known as a "block".

Example:

A volume created as follows:

    sscs create -a arrayname -p profile -s 204800MB volume volume_name

will have a size of 200GB. This translates to:

    Tracks per cylinder:   128
Sectors per Track  :    64
Total Cylinders    : 51200 (51198 + 2 reserved cylinders)

and is shown in Solaris OS as follows:

3. c6t200500A0B8170E1Dd0 <SUN-CSM100_R_FC-0612 cyl 51198 alt 2 hd 128 sec 64>
Total disk cylinders available: 51198 + 2 (reserved cylinders)
Part      Tag    Flag     Cylinders         Size            Blocks
0       root    wm       0 -    31      128.00MB    (32/0/0)       262144
1       swap    wu      32 -    63      128.00MB    (32/0/0)       262144
2     backup    wu       0 - 51197      199.99GB    (51198/0/0) 419414016

Note2: For more information on EFI labels, please review <Document: 1012091.1>

Product
Sun StorageTek 6540 Array
Sun StorageTek 6140 Array
Sun StorageTek 6130 Array
Sun StorageTek 6130 Array (SATA)

6130, 6140, geometry, format, 6540, cylinder, head, track, sector, block, volume, 6580, 6180, 6780, 2510, 2540, 2530, flx240, flx280, flx380

Change History
Date: 2007-01-17
User Name: 97961
Action: Approved

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