IBM ServeRAID-3H Ultra2 SCSI RAID
0, RAID 1, RAID 5
/ 32-bit PCI
data transfer rates
Drive Migration (LDM)
OS/2 Warp Server Advanced 4.0 SMP Feature, Novell IntranetWare
1.0, Microsoft Windows NT 4.0 Server, Windows 2000, SCO Open
Server 5.0.4, SCO Unixware 7.0
Three channels support up to 45 disk drives- LVDS support for
up to 80MBps and cable lengths up to 25M
- EDO Cache
- I2O support
- Hot-swap PCI support
- Year 2000 ready
- 80MHz RISC processor
- ServeRAID software contained on CD-ROM
- Bootable CD-ROM support
- It can transfer data up to 264MBps over the PCI bus when
installed in servers supporting 64-bit PCI slots.
- Contains two industry standard .8mm VHDCI connectors for
attachment of external SCSI enclosures.
- The third channel can be used to support an additional data
- An optional 32MB of battery-backup cache is available to
provide additional levels of high-availability to protect data
stored in write-back cache in the event of a power outage in
the server or a problem that occurs to the adapter itself.
- One internal, industry standard, 68-pin connector
- Three RAID channels
- SPCI connector for optional 32MB Battery-Backup Cache (included)
- Changing from RAID 0 to RAID 5, or vice versa, without
requiring the data to be restored from a backup source.
- Expanding the array by adding up to three physical drives at
- Logical drive size can be increased or left unchanged.
- If left unchanged, additional logical drives can be defined.
- Changing the RAID level on-the-fly from RAID 0 to RAID 5 by
adding a drive, or RAID 5 to RAID 0 by removing a drive.
- Changing a two disk drive RAID 1 to RAID 5, on-the-fly, by
adding one physical drive.
- Concurrent I/O support allowing logical drives to be
accessed by users during LDM.
- Degraded mode support allowing a logical drive in critical
mode not to affect LDM if already in progress, or preventing
LDM start if the drive is in critical model prior to start of
- Power failure recovery allowing LDM activity recovery even
after a power disruption.
- Hot-swap rebuild automatically starts rebuilding a replaced
disk drive without operator intervention.
- Data scrubbing periodically scans disk services and
automatically repairs bad sectors on the disk array to enhance
- One step array initialization and synchronization reduces
the time to prepare a new RAID 5 array to accept data.
- Auto synchronization automatically initializes drives
without user intervention.