A+ Breakout Ralph D Nyberg Storage

Traditional Internal Technologies PATA (IDE/EIDE) SATA SCSI

PATA (IDE/EIDE) molex power connector 40 Pin Cable Red wire is Pin 1 Pin 1 will be on side closest to power Older motherboards had 2 controllers Primary and Secondary Each controller was capable of supporting two devices (Master and Slave) The role (Master or Slave) was determined by jumper settings on the drive (Single, Master, Slave, or Cable Select) Slow and inexpensive

PATA (cont)

SATA SATA power connector 1 device per controller Replaces PATA on modern workstation Fast and inexpensive

SATA (cont)

SCSI Variety of power and cable types Requires SCSI controller (HBA) Original SCSI chain supported 8 devices each device must be assigned a unique ID (0 – 7) 0 is the lowest priority 7 is the highest priority HBA is assigned the highest priority (7) Boot device is assigned lowest priority (0) (cont)

SCSI (cont) Both ends of the SCSI chain must be terminated Device ID conflicts and improper termination are the most common problems Fast and expensive

SCSI

Partitioning Partitioning is the process of dividing a drive into one or more usable units Each drive may contain up to 4 primary partitions: one of which can be an extended partition Extended partitions cannot be used until logical drives are created within the extended partition

Formatting Before a partition can be used it must be formatted Formatting is the process of installing a file system to a partition or logical drive Formatting is destructive and renders any existing data unusable (cont)

Formatting (cont) Windows supports 3 different file systems: FAT FAT32 NTFS Support for all OS’s No NT 4 or Windows 95 support (pre OSR2) Supported by Windows NT, 2000, XP, Vista, Windows 7 2 GB Max 32 GB max on Win2K and XP 16 EiB max file size No Security Features include built in security, compression, encryption, and quotas

Notes A Fat32 file system can be converted to NTFS using the convert command This is 1 way and cannot be reversed Head crash occurs when a system or drive is jolted or dropped and the read/write heads come into contact with the platter(s) This can cause permanent damage to the drive Use of some advanced disk management features (spanning, RAID) require the disks be change to dynamic disks This will make the disks unusable to Windows 98

Questions