Выравнивание дисковых разделов Windows¶
Windows 2003 не выравнивает первый раздел, Windows 2008 иногда не выравнивает.
Это приводит к дополнительной операции ввода-вывода при записи блока
Creating and Formatting Disks¶
To Create and Format a Disk:
1. Open a command prompt, type DISKPART, and press ENTER.
2. For Windows 2008, Type the following commands within DISKPART:
SELECT DISK 1 CREATE PARTITION PRIMARY ALIGN=64 SELECT PARTITION 1 FORMAT FS=NTFS LABEL="New Volume" QUICK UNIT=8192 ASSIGN LETTER=E EXIT
For Windows 2003, the format command is not available within DISKPART. Type the following commands in
DISKPART: SELECT DISK 1 CREATE PARTITION PRIMARY ALIGN=64 SELECT PARTITION 1 ASSIGN LETTER=E EXIT
Then type this command from the command prompt:
FORMAT E: /FS:NTFS /V:NewVolume /Q /A:8192 ISILON SYSTEMS
Checking Disk Alignment and Block Size¶
To Check an Existing Partition for Alignment:
1. Open a command prompt and type:
wmic partition get BlockSize, StartingOffset, Name, Index
2. Notice the result of StartingOffset is 65536 or 64 KB:
BlockSize Index Name StartingOffset 512 0 Disk #1, Partition #0 65536
To Check an Existing Partition for Unit Allocation Size (Block Size)
1. Open a command prompt and type:
fsutil fsinfo ntfsinfo e:
2. Notice the result of Bytes per Cluster is 8192 or 8 KB:
NTFS Volume Serial Number : 0xf8e05f38e05efc76 Version : 3.1 Number Sectors : 0x00000000095fd83d Total Clusters : 0x000000000095fd83 Free Clusters : 0x000000000095dcb2 Total Reserved : 0x0000000000000000 Bytes Per Sector : 512 Bytes Per Cluster : 8192 Bytes Per FileRecord Segment : 1024 Clusters Per FileRecord Segment : 0 Mft Valid Data Length : 0x0000000000008000 Mft Start Lcn : 0x0000000000060000 Mft2 Start Lcn : 0x00000000004afec1 Mft Zone Start : 0x0000000000060000 Mft Zone End : 0x000000000018bfc0
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