如何判断HP xw6600工作站RAID类型及阵列替换后的管理方法

Hey there! Let's walk through this for your HP xw6600 running CentOS 7—first we'll figure out exactly what type of RAID you're using, then cover how to manage your new 6TB RAID1 array once it's swapped in.

Since the HP xw6600 often ships with a Smart Array hardware RAID controller, but we'll confirm all possibilities:

检查是否为硬件RAID #

• Use HP's dedicated RAID tools: The ssacli (or older hpssacli) utility is the go-to for HP Smart Array controllers. Run:

  ssacli ctrl all show config
  

  If this outputs detailed RAID array info (like logical drives, physical disks, and their statuses), you've got hardware RAID. Also, with hardware RAID, you won't see individual physical disks in /dev (e.g., no /dev/sdb//dev/sdc unless they're unconfigured)—only the virtual logical drive (like /dev/sda).
• Check BIOS/UEFI: During boot, watch for a prompt to enter the RAID controller setup (usually by pressing F8 for HP Smart Array). If you can access a dedicated RAID configuration interface there, that's definitive proof of hardware RAID.

检查是否为软件RAID (mdadm) #

Software RAID is managed via the mdadm tool. Run these commands:

• cat /proc/mdstat
  

  If you see lines like md0 : active raid1 sda1 sdb1 with sync progress details, that's software RAID.

• mdadm --detail --scan
  

  This will list configured /dev/mdX arrays if software RAID is in use.

检查是否为BIOS "Fake" RAID #

Fake RAID is a middle ground—configured in BIOS but relies on OS drivers. Use dmraid to check:

dmraid -s

If this returns RAID array info, you're dealing with BIOS RAID. Note: HP xw6600s rarely use this, but it's worth ruling out.

Once you've swapped the drives and set up the new RAID1 array, here's how to monitor sync/rebuild status based on your RAID type:

For Hardware RAID (HP Smart Array) #

• Check overall array status:

  ssacli ctrl all show config detail
  

  Look for Status: OK (healthy) or Rebuilding (in progress) next to your logical drive.
• View rebuild/sync progress:
  First, find your controller slot number with ssacli ctrl all show, then run:

  ssacli ctrl slot=0 ld all show status
  

  Replace slot=0 with your actual controller slot. This will show the rebuild percentage and estimated time remaining.
• Alternative: Boot into the RAID controller's BIOS interface (F8 during startup) for a graphical view of sync progress.

For Software RAID (mdadm) #

• Quick status & progress:

  cat /proc/mdstat
  

  You'll see:
  • [UU] means the array is fully synced and healthy.
  • [U_] or [_U] indicates a sync is in progress, along with a line showing rebuilding X% (YYYY/ZZZZZZ) finish=MMMmin speed=KKKKK/sec.
• Detailed sync info:

  mdadm --detail /dev/md0
  

  Replace /dev/md0 with your array device name. Look for the Resync Status field for exact progress.

For BIOS "Fake" RAID #

• Check status with dmraid -r or dmraid -s.
• For sync progress, check system logs with:

  dmesg | grep -i rebuild
  

  Or boot back into the BIOS RAID configuration interface to view real-time progress.

Quick Note on Swapping Drives #

For RAID1, always swap one drive at a time: replace the first drive, wait for the array to fully sync/rebuild, then replace the second. This avoids data loss from having both drives offline at once.

内容的提问来源于stack exchange，提问作者The-Vinh VO