Table of Contents
Advertisement
Table 2-4 Hot-swappable disk drive options
Feature code
3273
3277
3274
3278
3275
At the time of writing, if a new order is placed with two 4-pack DASD backplanes (FC 6592)
and more than one disk, the system configuration shipped from manufacturing will balance
the total number of SCSI disks between the two 4-pack SCSI backplanes. This is for
manufacturing test purposes, and not because of any limitation. Having the disks balanced
between the two 4-pack DASD backplanes allows the manufacturing process to
systematically test the SCSI paths and devices related to them.
Prior to the hot-swap of a disk in the hot-swappable capable bay, all necessary operating
system actions must be undertaken to ensure that the disk is capable of being deconfigured.
After the disk drive has been deconfigured, the SCSI enclosure device will power-off the slot,
enabling safe removal of the disk. You should ensure that the appropriate planning has been
given to any operating-system-related disk layout, such as the AIX Logical Volume Manager,
when using disk hot-swap capabilities. For more information, see Problem Solving and
Troubleshooting in AIX 5L, SG24-5496.
Note: We recommend that you to follow this procedure, after the disk has been
deconfigured, when removing a hot-swappable disk:
1. Release the tray handle on the disk.
2. Pull out the disk assembly a little bit from the original position.
3. Wait up to 20 seconds until the internal disk stops spinning.
4. Now you can safely remove the disk from the 4-pack DASD backplane.
After the SCSI disk hot-swap procedure, you can expect to find SCSI_ERR10 logged in the AIX
error log, with the second word of the sense data equal to 0017. It is generated from a SCSI
bus reset issued by the SES to reset all processes when a drive is inserted, and it is not an
issue.
Hot-swap disks and Linux
Linux does not support the hot-swap of any disk drive at the time of writing; therefore, the
Linux operating system does not support these hot-swappable procedures. A p5-550 system
running Linux must be shut down and powered off before you replace any disk drives.
2.7.3 RAID options
Internal hardware RAID is available on the p5-550. Three options are available:
Install the Dual Channel SCSI RAID Enablement Card (FC 5709). Install four disk drives in
the first 4-pack DASD backplane (FC 6592). This will allow RAID 0, 5, or 10 capabilities
within a single 4-pack of DASD with one RAID controller.
Description
36.4 GB 10,000 RPM Ultra3 SCSI hot-swappable disk drive
36.4 GB 15,000 RPM Ultra3 SCSI hot-swappable disk drive
73.4 GB 10,000 RPM Ultra3 SCSI hot-swappable disk drive
73.4 GB 15,000 RPM Ultra3 SCSI hot-swappable disk drive
146.8 GB 10,000 RPM Ultra3 SCSI hot-swappable disk drive
Chapter 2. Architecture and technical overview
27
Advertisement
Table of Contents
